# @ohos.notificationManager (NotificationManager)

The **notificationManager** module provides notification management capabilities, covering notifications, notification slots, notification enabled status, and notification badge status.

> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

## Modules to Import

```ts
import notificationManager from '@ohos.notificationManager';
```

## notificationManager.publish

publish(request: NotificationRequest, callback: AsyncCallback\<void\>): void

Publishes a notification. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                       | Mandatory| Description                                       |
| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                       |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                             |
| -------- | ---------------------------------------------------- |
| 1600001  | Internal error.                                      |
| 1600002  | Marshalling or unmarshalling error.                  |
| 1600003  | Failed to connect service.                           |
| 1600004  | Notification is not enabled.                         |
| 1600005  | Notification slot is not enabled.                    |
| 1600007  | The notification is not exist.                       |
| 1600009  | Over max number notifications per second.            |
| 1600012  | No memory space.                                     |
| 1600014  | No relevant right.                                   |
| 1600015  | The current notification status does not support duplicate configurations. |
| 1600016  | The notification version for this update is too low. |
| 2300007  | Network is unreachable.                              |

**Example**

```ts
import Base from '@ohos.base';

// publish callback
let publishCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`publish failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("publish success");
    }
}
// NotificationRequest object
let notificationRequest: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};
notificationManager.publish(notificationRequest, publishCallback);
```

## notificationManager.publish

publish(request: NotificationRequest): Promise\<void\>

Publishes a notification. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                       | Mandatory| Description                                       |
| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|

**Return value**

| Type    | Description| 
| ------- |--|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                             |
| -------- | ---------------------------------------------------- |
| 1600001  | Internal error.                                      |
| 1600002  | Marshalling or unmarshalling error.                  |
| 1600003  | Failed to connect service.                           |
| 1600004  | Notification is not enabled.                         |
| 1600005  | Notification slot is not enabled.                    |
| 1600007  | The notification is not exist.                       |
| 1600009  | Over max number notifications per second.            |
| 1600012  | No memory space.                                     |
| 1600014  | No relevant right.                                   |
| 1600015  | The current notification status does not support duplicate configurations. |
| 1600016  | The notification version for this update is too low. |
| 2300007  | Network is unreachable.                              |

**Example**

```ts
import Base from '@ohos.base';

// NotificationRequest object
let notificationRequest: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};
notificationManager.publish(notificationRequest).then(() => {
	console.info("publish success");
}).catch((err: Base.BusinessError) => {
    console.error(`publish fail: ${JSON.stringify(err)}`);
});

```

## notificationManager.publish

publish(request: NotificationRequest, userId: number, callback: AsyncCallback\<void\>): void

Publishes a notification to a specified user. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                                       | Mandatory| Description                                       |
| -------- | ----------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
| userId   | number                                      | Yes  | User ID.                          |
| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                          |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                             |
| -------- | ---------------------------------------------------- |
| 1600001  | Internal error.                                      |
| 1600002  | Marshalling or unmarshalling error.                  |
| 1600003  | Failed to connect service.                           |
| 1600004  | Notification is not enabled.                         |
| 1600005  | Notification slot is not enabled.                    |
| 1600007  | The notification is not exist.                       |
| 1600008  | The user is not exist.                               |
| 1600009  | Over max number notifications per second.            |
| 1600012  | No memory space.                                     |
| 1600014  | No relevant right.                                   |
| 1600015  | The current notification status does not support duplicate configurations. |
| 1600016  | The notification version for this update is too low. |
| 2300007  | Network is unreachable.                              |

**Example**

```ts
import Base from '@ohos.base';

// publish callback
let publishCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`publish failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("publish success");
    }
}
// User ID
let userId: number = 1;
// NotificationRequest object
let notificationRequest: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};
notificationManager.publish(notificationRequest, userId, publishCallback);
```

## notificationManager.publish

publish(request: NotificationRequest, userId: number): Promise\<void\>

Publishes a notification to a specified user. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    |  Type                                       | Mandatory| Description                                       |
| -------- | ----------------------------------------- | ---- | ------------------------------------------- |
| request  | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
| userId   | number                                      | Yes  | User ID.                          |

**Return value**

| Type    | Description       | 
| ------- |-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                             |
| -------- | ---------------------------------------------------- |
| 1600001  | Internal error.                                      |
| 1600002  | Marshalling or unmarshalling error.                  |
| 1600003  | Failed to connect service.                           |
| 1600004  | Notification is not enabled.                         |
| 1600005  | Notification slot is not enabled.                    |
| 1600007  | The notification is not exist.                       |
| 1600008  | The user is not exist.                               |
| 1600009  | Over max number notifications per second.            |
| 1600012  | No memory space.                                     |
| 1600014  | No relevant right.                                   |
| 1600015  | The current notification status does not support duplicate configurations. |
| 1600016  | The notification version for this update is too low. |
| 2300007  | Network is unreachable.                              |

**Example**

```ts
import Base from '@ohos.base';

let notificationRequest: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};

let userId: number = 1;

notificationManager.publish(notificationRequest, userId).then(() => {
	console.info("publish success");
}).catch((err: Base.BusinessError) => {
    console.error(`publish fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.cancel

cancel(id: number, label: string, callback: AsyncCallback\<void\>): void

Cancels a notification with the specified ID and label. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| id       | number                | Yes  | Notification ID.              |
| label    | string                | Yes  | Notification label.            |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`cancel failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("cancel success");
    } 
}
notificationManager.cancel(0, "label", cancelCallback);
```

## notificationManager.cancel

cancel(id: number, label?: string): Promise\<void\>

Cancels a notification with the specified ID and optional label. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name | Type  | Mandatory| Description    |
| ----- | ------ | ---- | -------- |
| id    | number | Yes  | Notification ID.  |
| label | string | No  | Notification label. This parameter is left empty by default.|

**Return value**

| Type    | Description       | 
| ------- |-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.cancel(0).then(() => {
	console.info("cancel success");
}).catch((err: Base.BusinessError) => {
    console.error(`cancel fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.cancel

cancel(id: number, callback: AsyncCallback\<void\>): void

Cancels a notification with the specified ID. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| id       | number                | Yes  | Notification ID.              |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`cancel failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("cancel success");
    }
}
notificationManager.cancel(0, cancelCallback);
```

## notificationManager.cancelAll

cancelAll(callback: AsyncCallback\<void\>): void

Cancels all notifications of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Example**

```ts
import Base from '@ohos.base';

// cancel callback
let cancelAllCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`cancelAll failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("cancelAll success");
    }
}
notificationManager.cancelAll(cancelAllCallback);
```

## notificationManager.cancelAll

cancelAll(): Promise\<void\>

Cancels all notifications of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type    | Description       | 
| ------- |-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.cancelAll().then(() => {
	console.info("cancelAll success");
}).catch((err: Base.BusinessError) => {
    console.error(`cancelAll fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.addSlot

addSlot(slot: NotificationSlot, callback: AsyncCallback\<void\>): void

Adds a notification slot. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| slot     | [NotificationSlot](js-apis-inner-notification-notificationSlot.md)       | Yes  | Notification slot to add.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// addSlot callback
let addSlotCallBack = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`addSlot failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("addSlot success");
    }
}
// NotificationSlot object
let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};
notificationManager.addSlot(notificationSlot, addSlotCallBack);
```

## notificationManager.addSlot

addSlot(slot: NotificationSlot): Promise\<void\>

Adds a notification slot. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name| Type            | Mandatory| Description                |
| ---- | ---------------- | ---- | -------------------- |
| slot | [NotificationSlot](js-apis-inner-notification-notificationSlot.md) | Yes  | Notification slot to add.|

**Return value**

| Type    | Description       | 
| ------- |-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// NotificationSlot object
let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};
notificationManager.addSlot(notificationSlot).then(() => {
	console.info("addSlot success");
}).catch((err: Base.BusinessError) => {
    console.error(`addSlot fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.addSlot

addSlot(type: SlotType, callback: AsyncCallback\<void\>): void

Adds a notification slot of a specified type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                  |
| -------- | --------------------- | ---- | ---------------------- |
| type     | [SlotType](#slottype)              | Yes  | Type of the notification slot to add.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.  |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                    |

**Example**

```ts
import Base from '@ohos.base';

// addSlot callback
let addSlotCallBack = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`addSlot failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("addSlot success");
    }
}
notificationManager.addSlot(notificationManager.SlotType.SOCIAL_COMMUNICATION, addSlotCallBack);
```

## notificationManager.addSlot

addSlot(type: SlotType): Promise\<void\>

Adds a notification slot of a specified type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name| Type    | Mandatory| Description                  |
| ---- | -------- | ---- | ---------------------- |
| type | [SlotType](#slottype) | Yes  | Type of the notification slot to add.|

**Return value**

| Type    | Description       | 
| ------- |-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                    |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.addSlot(notificationManager.SlotType.SOCIAL_COMMUNICATION).then(() => {
	console.info("addSlot success");
}).catch((err: Base.BusinessError) => {
    console.error(`addSlot fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.addSlots

addSlots(slots: Array\<NotificationSlot\>, callback: AsyncCallback\<void\>): void

Adds an array of notification slots. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                     | Mandatory| Description                    |
| -------- | ------------------------- | ---- | ------------------------ |
| slots    | Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\> | Yes  | Notification slots to add.|
| callback | AsyncCallback\<void\>     | Yes  | Callback used to return the result.    |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// addSlots callback
let addSlotsCallBack = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`addSlots failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("addSlots success");
    }
}
// NotificationSlot object
let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};
// NotificationSlotArray object
let notificationSlotArray: notificationManager.NotificationSlot[] = new Array();
notificationSlotArray[0] = notificationSlot;

notificationManager.addSlots(notificationSlotArray, addSlotsCallBack);
```

## notificationManager.addSlots

addSlots(slots: Array\<NotificationSlot\>): Promise\<void\>

Adds an array of notification slots. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name | Type                     | Mandatory| Description                    |
| ----- | ------------------------- | ---- | ------------------------ |
| slots | Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\> | Yes  | Notification slots to add.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// NotificationSlot object
let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};
// NotificationSlotArray object
let notificationSlotArray: notificationManager.NotificationSlot[] = new Array();
notificationSlotArray[0] = notificationSlot;

notificationManager.addSlots(notificationSlotArray).then(() => {
	console.info("addSlots success");
}).catch((err: Base.BusinessError) => {
    console.error(`addSlot fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getSlot

getSlot(slotType: SlotType, callback: AsyncCallback\<NotificationSlot\>): void

Obtains a notification slot of a specified type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                             | Mandatory| Description                                                       |
| -------- | --------------------------------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype)                          | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
| callback | AsyncCallback\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\> | Yes  | Callback used to return the result.                                       |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

// getSlot callback
let getSlotCallback = (err: Base.BusinessError, data: notificationManager.NotificationSlot): void => {
    if (err) {
        console.error(`getSlot failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getSlot success, data is ${JSON.stringify(data)}`);
    }
}
let slotType: notificationManager.SlotType = notificationManager.SlotType.SOCIAL_COMMUNICATION;
notificationManager.getSlot(slotType, getSlotCallback);
```

## notificationManager.getSlot

getSlot(slotType: SlotType): Promise\<NotificationSlot\>

Obtains a notification slot of a specified type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type    | Mandatory| Description                                                       |
| -------- | -------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let slotType: notificationManager.SlotType = notificationManager.SlotType.SOCIAL_COMMUNICATION;

notificationManager.getSlot(slotType).then((data: notificationManager.NotificationSlot) => {
    console.info("getSlot success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getSlot fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getSlots

getSlots(callback: AsyncCallback\<Array\<NotificationSlot>>): void

Obtains all notification slots of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                             | Mandatory| Description                |
| -------- | --------------------------------- | ---- | -------------------- |
| callback | AsyncCallback\<Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\>\> | Yes  | Callback used to return all notification slots of the current application.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).


| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

// getSlots callback
let getSlotsCallback = (err: Base.BusinessError, data: Array<notificationManager.NotificationSlot>): void => {
  if (err) {
    console.error(`getSlots failed, code is ${err.code}, message is ${err.message}`);
  } else {
    console.info(`getSlots success, data is ${JSON.stringify(data)}`);
  }
}
notificationManager.getSlots(getSlotsCallback);
```

## notificationManager.getSlots

getSlots(): Promise\<Array\<NotificationSlot>>

Obtains all notification slots of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)\>\> | Promise used to return all notification slots of the current application.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getSlots().then((data: Array<notificationManager.NotificationSlot>) => {
	console.info("getSlots success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getSlots fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.removeSlot

removeSlot(slotType: SlotType, callback: AsyncCallback\<void\>): void

Removes a notification slot of a specified type for this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                                                       |
| -------- | --------------------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype)              | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.                                       |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

// removeSlot callback
let removeSlotCallback = (err: Base.BusinessError): void => {
  if (err) {
    console.error(`removeSlot failed, code is ${err.code}, message is ${err.message}`);
  } else {
    console.info("removeSlot success");
  }
}
let slotType = notificationManager.SlotType.SOCIAL_COMMUNICATION;
notificationManager.removeSlot(slotType, removeSlotCallback);
```

## notificationManager.removeSlot

removeSlot(slotType: SlotType): Promise\<void\>

Removes a notification slot of a specified type for this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type    | Mandatory| Description                                                       |
| -------- | -------- | ---- | ----------------------------------------------------------- |
| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let slotType: notificationManager.SlotType = notificationManager.SlotType.SOCIAL_COMMUNICATION;
notificationManager.removeSlot(slotType).then(() => {
	console.info("removeSlot success");
}).catch((err: Base.BusinessError) => {
    console.error(`removeSlot fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.removeAllSlots

removeAllSlots(callback: AsyncCallback\<void\>): void

Removes all notification slots for this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let removeAllCallBack = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`removeAllSlots failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("removeAllSlots success");
    }
}
notificationManager.removeAllSlots(removeAllCallBack);
```

## notificationManager.removeAllSlots

removeAllSlots(): Promise\<void\>

Removes all notification slots for this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.removeAllSlots().then(() => {
	console.info("removeAllSlots success");
}).catch((err: Base.BusinessError) => {
    console.error(`removeAllSlots fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setNotificationEnable

setNotificationEnable(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void

Sets whether to enable notification for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)   | Yes  | Bundle of the application.       |
| enable   | boolean               | Yes  | Whether to enable notification.            |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let setNotificationEnableCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setNotificationEnableCallback failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setNotificationEnableCallback success");
    }
}
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.setNotificationEnable(bundle, false, setNotificationEnableCallback);
```

## notificationManager.setNotificationEnable

setNotificationEnable(bundle: BundleOption, enable: boolean): Promise\<void\>

Sets whether to enable notification for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|
| enable | boolean      | Yes  | Whether to enable notification.  |

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.setNotificationEnable(bundle, false).then(() => {
	console.info("setNotificationEnable success");
}).catch((err: Base.BusinessError) => {
    console.error(`setNotificationEnable fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void

Checks whether notification is enabled for the specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name    | Type                 | Mandatory| Description                    |
| -------- | --------------------- | ---- | ------------------------ |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)          | Yes  | Bundle of the application.           |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let isNotificationEnabledCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isNotificationEnabled failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`isNotificationEnabled success, data is ${JSON.stringify(data)}`);
    }
}

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};

notificationManager.isNotificationEnabled(bundle, isNotificationEnabledCallback);
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(bundle: BundleOption): Promise\<boolean\>

Checks whether notification is enabled for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|

**Return value**

| Type              | Description                                               |
| ------------------ | --------------------------------------------------- |
| Promise\<boolean\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.isNotificationEnabled(bundle).then((data: boolean) => {
	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isNotificationEnabled fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(callback: AsyncCallback\<boolean\>): void

Checks whether notification is enabled for this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                 | Mandatory| Description                    |
| -------- | --------------------- | ---- | ------------------------ |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                 |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600008  | The user is not exist.                   |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let isNotificationEnabledCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isNotificationEnabled failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`isNotificationEnabled success, data is ${JSON.stringify(data)}`);
    }
}

notificationManager.isNotificationEnabled(isNotificationEnabledCallback);
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(): Promise\<boolean\>

Checks whether notification is enabled for the current application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600008  | The user is not exist.                   |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.isNotificationEnabled().then((data: boolean) => {
	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isNotificationEnabled fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(userId: number, callback: AsyncCallback\<boolean\>): void

Checks whether notification is enabled for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                    |
| -------- | --------------------- | ---- | ------------------------ |
| userId   | number                | Yes  | User ID.|
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

let isNotificationEnabledCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isNotificationEnabled failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`isNotificationEnabled success, data is ${JSON.stringify(data)}`);
    }
}

let userId: number = 1;

notificationManager.isNotificationEnabled(userId, isNotificationEnabledCallback);
```

## notificationManager.isNotificationEnabled

isNotificationEnabled(userId: number): Promise\<boolean\>

Checks whether notification is enabled for a specified user. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| userId | number       | Yes  | User ID.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600008  | The user is not exist..                  |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 1;

notificationManager.isNotificationEnabled(userId).then((data: boolean) => {
	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isNotificationEnabled fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.displayBadge

displayBadge(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void

Sets whether to enable the notification badge for the specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)          | Yes  | Bundle of the application.          |
| enable   | boolean               | Yes  | Whether to enable notification.            |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let displayBadgeCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`displayBadge failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("displayBadge success");
    }
}
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.displayBadge(bundle, false, displayBadgeCallback);
```

## notificationManager.displayBadge

displayBadge(bundle: BundleOption, enable: boolean): Promise\<void\>

Sets whether to enable the notification badge for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|
| enable | boolean      | Yes  | Whether to enable notification.  |

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.displayBadge(bundle, false).then(() => {
	console.info("displayBadge success");
}).catch((err: Base.BusinessError) => {
    console.error(`displayBadge fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isBadgeDisplayed

isBadgeDisplayed(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void

Checks whether the notification badge is enabled for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                    |
| -------- | --------------------- | ---- | ------------------------ |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)          | Yes  | Bundle of the application.              |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let isBadgeDisplayedCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isBadgeDisplayed failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`isBadgeDisplayed success, data is ${JSON.stringify(data)}`);
    }
}
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.isBadgeDisplayed(bundle, isBadgeDisplayedCallback);
```

## notificationManager.isBadgeDisplayed

isBadgeDisplayed(bundle: BundleOption): Promise\<boolean\>

Checks whether the notification badge is enabled for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
  bundle: "bundleName1",
};

notificationManager.isBadgeDisplayed(bundle).then((data: boolean) => {
	console.info("isBadgeDisplayed success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isBadgeDisplayed fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setBadgeNumber<sup>10+</sup>

setBadgeNumber(badgeNumber: number): Promise\<void\>

Sets the notification badge number. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type  | Mandatory| Description      |
| ----------- | ------ | ---- | ---------- |
| badgeNumber | number | Yes  | Notification badge number to set.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let badgeNumber: number = 10;

notificationManager.setBadgeNumber(badgeNumber).then(() => {
	console.info("displayBadge success");
}).catch((err: Base.BusinessError) => {
    console.error(`displayBadge fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setBadgeNumber<sup>10+</sup>

setBadgeNumber(badgeNumber: number, callback: AsyncCallback\<void\>): void

Sets the notification badge number. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type                 | Mandatory| Description              |
| ----------- | --------------------- | ---- | ------------------ |
| badgeNumber | number                | Yes  | Notification badge number to set.        |
| callback    | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let setBadgeNumberCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.info(`displayBadge failed code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("displayBadge success");
    }
}

let badgeNumber: number = 10;
notificationManager.setBadgeNumber(badgeNumber, setBadgeNumberCallback);
```

## notificationManager.setSlotFlagsByBundle<sup>11+</sup>

setSlotFlagsByBundle(bundle: BundleOption, slotFlags: number): Promise\<void\>

Sets the notification slot for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|
| slotFlags   | number | Yes  | Notification slot flag.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};

let slotFlags: number = 1;

notificationManager.setSlotFlagsByBundle(bundle, slotFlags).then(() => {
	console.info("setSlotFlagsByBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`setSlotFlagsByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setSlotByBundle

setSlotByBundle(bundle: BundleOption, slot: NotificationSlot, callback: AsyncCallback\<void\>): void

Sets the notification slot for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                |
| -------- | --------------------- | ---- | -------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)          | Yes  | Bundle of the application.          |
| slot     | [NotificationSlot](js-apis-inner-notification-notificationSlot.md)      | Yes  | Notification slot.            |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let setSlotByBundleCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setSlotByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setSlotByBundle success");
    }
}
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};
notificationManager.setSlotByBundle(bundle, notificationSlot, setSlotByBundleCallback);
```

## notificationManager.setSlotByBundle

setSlotByBundle(bundle: BundleOption, slot: NotificationSlot): Promise\<void\>

Sets the notification slot for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|
| slot   | [NotificationSlot](js-apis-inner-notification-notificationSlot.md) | Yes  | Notification slot.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};

let notificationSlot: notificationManager.NotificationSlot = {
    notificationType: notificationManager.SlotType.SOCIAL_COMMUNICATION
};

notificationManager.setSlotByBundle(bundle, notificationSlot).then(() => {
	console.info("setSlotByBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`setSlotByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getSlotFlagsByBundle<sup>11+</sup>

getSlotFlagsByBundle(bundle: BundleOption): Promise\<number\>

Obtains the notification slot flag of the specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
|  Promise\<number\>| Promise used to return the notification slot flag.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.getSlotFlagsByBundle(bundle).then(() => {
	console.info("getSlotFlagsByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getSlotFlagsByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getSlotsByBundle

getSlotsByBundle(bundle: BundleOption, callback: AsyncCallback\<Array\<NotificationSlot>>): void

Obtains the notification slots of the specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                                    | Mandatory| Description                |
| -------- | ---------------------------------------- | ---- | -------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)                             | Yes  | Bundle of the application.          |
| callback | AsyncCallback\<Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)>> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let getSlotsByBundleCallback = (err: Base.BusinessError, data: Array<notificationManager.NotificationSlot>): void => {
    if (err) {
        console.error(`getSlotByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getSlotsByBundle success, data is ${JSON.stringify(data)}`);
    }
}
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.getSlotsByBundle(bundle, getSlotsByBundleCallback);
```

## notificationManager.getSlotsByBundle

getSlotsByBundle(bundle: BundleOption): Promise\<Array\<NotificationSlot>>

Obtains the notification slots of a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<Array\<[NotificationSlot](js-apis-inner-notification-notificationSlot.md)>> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};

notificationManager.getSlotsByBundle(bundle).then((data: Array<notificationManager.NotificationSlot>) => {
	console.info("getSlotsByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getSlotsByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getSlotNumByBundle

getSlotNumByBundle(bundle: BundleOption, callback: AsyncCallback\<number\>): void

Obtains the number of notification slots of a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                     | Mandatory| Description                  |
| -------- | ------------------------- | ---- | ---------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)              | Yes  | Bundle of the application.            |
| callback | AsyncCallback\<number\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let getSlotNumByBundleCallback = (err: Base.BusinessError, data: number): void => {
    if (err) {
        console.error(`getSlotByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getSlotNumByBundle success data is ${JSON.stringify(data)}`);
    }
}

let bundle: notificationManager.BundleOption = {
  bundle: "bundleName1",
};

notificationManager.getSlotNumByBundle(bundle, getSlotNumByBundleCallback);
```

## notificationManager.getSlotNumByBundle

getSlotNumByBundle(bundle: BundleOption): Promise\<number\>

Obtains the number of notification slots of a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type        | Mandatory| Description      |
| ------ | ------------ | ---- | ---------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle of the application.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<number\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
  bundle: "bundleName1",
};

notificationManager.getSlotNumByBundle(bundle).then((data: number) => {
	console.info("getSlotNumByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getSlotsByBundle fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.getAllActiveNotifications

getAllActiveNotifications(callback: AsyncCallback\<Array\<NotificationRequest>>): void

Obtains all active notifications. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                                                        | Mandatory| Description                |
| -------- | ------------------------------------------------------------ | ---- | -------------------- |
| callback | AsyncCallback\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)>> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let getAllActiveNotificationsCallback = (err: Base.BusinessError, data: Array<notificationManager.NotificationRequest>): void => {
    if (err) {
        console.error(`getAllActiveNotifications failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getAllActiveNotifications success, data is ${JSON.stringify(data)}`);
    }
}

notificationManager.getAllActiveNotifications(getAllActiveNotificationsCallback);
```

## notificationManager.getAllActiveNotifications

getAllActiveNotifications(): Promise\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)\>\>

Obtains all active notifications. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)\>\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getAllActiveNotifications().then((data: Array<notificationManager.NotificationRequest>) => {
	console.info("getAllActiveNotifications success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getAllActiveNotifications fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getActiveNotificationCount

getActiveNotificationCount(callback: AsyncCallback\<number\>): void

Obtains the number of active notifications of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                  | Mandatory| Description                  |
| -------- | ---------------------- | ---- | ---------------------- |
| callback | AsyncCallback\<number\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let getActiveNotificationCountCallback = (err: Base.BusinessError, data: number): void => {
    if (err) {
        console.error(`getActiveNotificationCount failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getActiveNotificationCount success, data is ${JSON.stringify(data)}`);
    }
}

notificationManager.getActiveNotificationCount(getActiveNotificationCountCallback);
```

## notificationManager.getActiveNotificationCount

getActiveNotificationCount(): Promise\<number\>

Obtains the number of active notifications of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type             | Description                                       |
| ----------------- | ------------------------------------------- |
| Promise\<number\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getActiveNotificationCount().then((data: number) => {
	console.info("getActiveNotificationCount success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getActiveNotificationCount fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getActiveNotifications

getActiveNotifications(callback: AsyncCallback\<Array\<NotificationRequest>>): void

Obtains active notifications of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name    | Type                                                        | Mandatory| Description                          |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------ |
| callback | AsyncCallback\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)>> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let getActiveNotificationsCallback = (err: Base.BusinessError, data: Array<notificationManager.NotificationRequest>): void => {
    if (err) {
        console.error(`getActiveNotifications failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("getActiveNotifications success");
    }
}

notificationManager.getActiveNotifications(getActiveNotificationsCallback);
```

## notificationManager.getActiveNotifications

getActiveNotifications(): Promise\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)\>\>

Obtains active notifications of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type                                                        | Description                                   |
| ------------------------------------------------------------ | --------------------------------------- |
| Promise\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)\>\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getActiveNotifications().then((data: Array<notificationManager.NotificationRequest>) => {
	console.info("removeGroupByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getActiveNotificationCount fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.getActiveNotificationByFilter<sup>11+<sup>

getActiveNotificationByFilter(filter: NotificationFilter, callback: AsyncCallback\<NotificationRequest\>): void

Obtains information about the common live view that matches the specified filter criteria. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.


**Parameters**

| Name    | Type                                                        | Mandatory| Description                          |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------ |
| filter   | [NotificationFilter](js-apis-inner-notification-notificationRequest.md#notificationfilter11) | Yes  | Filter criteria for querying the common live view.|
| callback | AsyncCallback\<Array\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)>> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                 |
| -------- | ---------------------------------------- |
| 1600007  | The notification is not exist.           |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundleOption: notificationManager.BundleOption = {
  bundle: "bundleName1",
};
let notificationKey: notificationSubscribe.NotificationKey = {
    id: 11,
    label: ""
};
let filter: notificationManager.NotificationFilter = {
    bundle: bundleOption,
    notificationKey: notificationKey,
    extraInfoKeys: ['event']
}
let getActiveNotificationByFilterCallback = (err: Base.BusinessError, data: notificationManager.NotificationRequest): void => {
    if (err) {
        console.error(`getActiveNotificationByFilter failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("getActiveNotificationByFilter success");
    }
}
notificationManager.getActiveNotificationByFilter(filter, getActiveNotificationByFilterCallback);
```

## notificationManager.getActiveNotificationByFilter<sup>11+<sup>

getActiveNotificationByFilter(filter: NotificationFilter): Promise\<NotificationRequest\>

Obtains information about the common live view that matches the specified filter criteria. This API uses a promise to return the URI of the file in the destination directory.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.


**Parameters**

| Name    | Type                                                        | Mandatory| Description                          |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------ |
| filter   | [NotificationFilter](js-apis-inner-notification-notificationRequest.md#notificationfilter11) | Yes  | Filter criteria for querying the common live view.|

**Return value**

| Type                                                        | Description                                   |
| ------------------------------------------------------------ | --------------------------------------- |
| Promise\<[NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest)\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                 |
| -------- | ---------------------------------------- |
| 1600007  | The notification is not exist.           |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundleOption: notificationManager.BundleOption = {
  bundle: "bundleName1",
};
let notificationKey: notificationSubscribe.NotificationKey = {
    id: 11,
    label: ""
};
let filter: notificationManager.NotificationFilter = {
    bundle: bundleOption,
    notificationKey: notificationKey,
    extraInfoKeys: ['event']
}
notificationManager.getActiveNotificationByFilter().then((filter: notificationRequest.NotificationFilter, data: notificationManager.NotificationRequest) => {
	console.info("getActiveNotificationByFilter success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getActiveNotificationByFilter fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.cancelGroup

cancelGroup(groupName: string, callback: AsyncCallback\<void\>): void

Cancels notifications under a notification group of this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type                 | Mandatory| Description                        |
| --------- | --------------------- | ---- | ---------------------------- |
| groupName | string                | Yes  | Name of the notification group, which is specified through [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) when the notification is published.|
| callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let cancelGroupCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`cancelGroup failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("cancelGroup success");
    }
}

let groupName: string = "GroupName";

notificationManager.cancelGroup(groupName, cancelGroupCallback);
```

## notificationManager.cancelGroup

cancelGroup(groupName: string): Promise\<void\>

Cancels notifications under a notification group of this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name     | Type  | Mandatory| Description          |
| --------- | ------ | ---- | -------------- |
| groupName | string | Yes  | Name of the notification group.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let groupName: string = "GroupName";
notificationManager.cancelGroup(groupName).then(() => {
	console.info("cancelGroup success");
}).catch((err: Base.BusinessError) => {
    console.error(`cancelGroup fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.removeGroupByBundle

removeGroupByBundle(bundle: BundleOption, groupName: string, callback: AsyncCallback\<void\>): void

Removes notifications under a notification group of the specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name     | Type                 | Mandatory| Description                        |
| --------- | --------------------- | ---- | ---------------------------- |
| bundle    | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)          | Yes  | Bundle information of the application.                  |
| groupName | string                | Yes  | Name of the notification group.              |
| callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let removeGroupByBundleCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`removeGroupByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("removeGroupByBundle success");
    }
}

let bundleOption: notificationManager.BundleOption = { bundle: "Bundle" };
let groupName: string = "GroupName";

notificationManager.removeGroupByBundle(bundleOption, groupName, removeGroupByBundleCallback);
```

## notificationManager.removeGroupByBundle

removeGroupByBundle(bundle: BundleOption, groupName: string): Promise\<void\>

Removes notifications under a notification group of a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name     | Type        | Mandatory| Description          |
| --------- | ------------ | ---- | -------------- |
| bundle    | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.    |
| groupName | string       | Yes  | Name of the notification group.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundleOption: notificationManager.BundleOption = { bundle: "Bundle" };
let groupName: string = "GroupName";

notificationManager.removeGroupByBundle(bundleOption, groupName).then(() => {
	console.info("removeGroupByBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`removeGroupByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setDoNotDisturbDate

setDoNotDisturbDate(date: DoNotDisturbDate, callback: AsyncCallback\<void\>): void

Sets the DND time. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                  |
| -------- | --------------------- | ---- | ---------------------- |
| date     | [DoNotDisturbDate](#donotdisturbdate)      | Yes  | DND time to set.        |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let setDoNotDisturbDateCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setDoNotDisturbDate failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setDoNotDisturbDate success");
    }
}

let doNotDisturbDate: notificationManager.DoNotDisturbDate = {
    type: notificationManager.DoNotDisturbType.TYPE_ONCE,
    begin: new Date(),
    end: new Date(2021, 11, 15, 18, 0)
};

notificationManager.setDoNotDisturbDate(doNotDisturbDate, setDoNotDisturbDateCallback);
```

## notificationManager.setDoNotDisturbDate

setDoNotDisturbDate(date: DoNotDisturbDate): Promise\<void\>

Sets the DND time. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name| Type            | Mandatory| Description          |
| ---- | ---------------- | ---- | -------------- |
| date | [DoNotDisturbDate](#donotdisturbdate) | Yes  | DND time to set.|


**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let doNotDisturbDate: notificationManager.DoNotDisturbDate = {
    type: notificationManager.DoNotDisturbType.TYPE_ONCE,
    begin: new Date(),
    end: new Date(2021, 11, 15, 18, 0)
};
notificationManager.setDoNotDisturbDate(doNotDisturbDate).then(() => {
	console.info("setDoNotDisturbDate success");
}).catch((err: Base.BusinessError) => {
    console.error(`setDoNotDisturbDate fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.setDoNotDisturbDate

setDoNotDisturbDate(date: DoNotDisturbDate, userId: number, callback: AsyncCallback\<void\>): void

Sets the DND time for a specified user. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                 | Mandatory| Description                  |
| -------- | --------------------- | ---- | ---------------------- |
| date     | [DoNotDisturbDate](#donotdisturbdate)      | Yes  | DND time to set.        |
| userId   | number                | Yes  | ID of the user for whom you want to set the DND time.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let setDoNotDisturbDateCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setDoNotDisturbDate failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setDoNotDisturbDate success");
    }
}

let doNotDisturbDate: notificationManager.DoNotDisturbDate = {
    type: notificationManager.DoNotDisturbType.TYPE_ONCE,
    begin: new Date(),
    end: new Date(2021, 11, 15, 18, 0)
};

let userId: number = 1;

notificationManager.setDoNotDisturbDate(doNotDisturbDate, userId, setDoNotDisturbDateCallback);
```

## notificationManager.setDoNotDisturbDate

setDoNotDisturbDate(date: DoNotDisturbDate, userId: number): Promise\<void\>

Sets the DND time for a specified user. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type            | Mandatory| Description          |
| ------ | ---------------- | ---- | -------------- |
| date   | [DoNotDisturbDate](#donotdisturbdate) | Yes  | DND time to set.|
| userId | number           | Yes  | ID of the user for whom you want to set the DND time.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let doNotDisturbDate: notificationManager.DoNotDisturbDate = {
    type: notificationManager.DoNotDisturbType.TYPE_ONCE,
    begin: new Date(),
    end: new Date(2021, 11, 15, 18, 0)
};

let userId: number = 1;

notificationManager.setDoNotDisturbDate(doNotDisturbDate, userId).then(() => {
	console.info("setDoNotDisturbDate success");
}).catch((err: Base.BusinessError) => {
    console.error(`setDoNotDisturbDate fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.getDoNotDisturbDate

getDoNotDisturbDate(callback: AsyncCallback\<DoNotDisturbDate\>): void

Obtains the DND time. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                             | Mandatory| Description                  |
| -------- | --------------------------------- | ---- | ---------------------- |
| callback | AsyncCallback\<[DoNotDisturbDate](#donotdisturbdate)\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let getDoNotDisturbDateCallback = (err: Base.BusinessError, data: notificationManager.DoNotDisturbDate): void => {
    if (err) {
        console.error(`getDoNotDisturbDate failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getDoNotDisturbDate success, data is ${JSON.stringify(data)}`);
    }
}

notificationManager.getDoNotDisturbDate(getDoNotDisturbDateCallback);
```

## notificationManager.getDoNotDisturbDate

getDoNotDisturbDate(): Promise\<DoNotDisturbDate\>

Obtains the DND time. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Return value**

| Type                                            | Description                                     |
| ------------------------------------------------ | ----------------------------------------- |
| Promise\<[DoNotDisturbDate](#donotdisturbdate)\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getDoNotDisturbDate().then((data: notificationManager.DoNotDisturbDate) => {
  console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getDoNotDisturbDate fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.getDoNotDisturbDate

getDoNotDisturbDate(userId: number, callback: AsyncCallback\<DoNotDisturbDate\>): void

Obtains the DND time of a specified user. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                             | Mandatory| Description                  |
| -------- | --------------------------------- | ---- | ---------------------- |
| callback | AsyncCallback\<[DoNotDisturbDate](#donotdisturbdate)\> | Yes  | Callback used to return the result.|
| userId   | number                            | Yes  | User ID.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let getDoNotDisturbDateCallback = (err: Base.BusinessError, data: notificationManager.DoNotDisturbDate): void => {
    if (err) {
        console.error(`getDoNotDisturbDate failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getDoNotDisturbDate success, data is ${JSON.stringify(data)}`);
    }
}

let userId: number = 1;

notificationManager.getDoNotDisturbDate(userId, getDoNotDisturbDateCallback);
```

## notificationManager.getDoNotDisturbDate

getDoNotDisturbDate(userId: number): Promise\<DoNotDisturbDate\>

Obtains the DND time of a specified user. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                             | Mandatory| Description                  |
| -------- | --------------------------------- | ---- | ---------------------- |
| userId   | number                            | Yes  | User ID.|

**Return value**

| Type                                            | Description                                     |
| ------------------------------------------------ | ----------------------------------------- |
| Promise\<[DoNotDisturbDate](#donotdisturbdate)\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 1;

notificationManager.getDoNotDisturbDate(userId).then((data: notificationManager.DoNotDisturbDate) => {
	console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getDoNotDisturbDate fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.isSupportDoNotDisturbMode

 isSupportDoNotDisturbMode(callback: AsyncCallback\<boolean\>): void

Checks whether DND mode is supported. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name    | Type                    | Mandatory| Description                            |
| -------- | ------------------------ | ---- | -------------------------------- |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. The value **true** means that DND mode is supported, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                            |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let isSupportDoNotDisturbModeCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isSupportDoNotDisturbMode failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("isSupportDoNotDisturbMode success");
    }
}

notificationManager.isSupportDoNotDisturbMode(isSupportDoNotDisturbModeCallback);
```

## notificationManager.isSupportDoNotDisturbMode

isSupportDoNotDisturbMode(): Promise\<boolean\>

Checks whether DND mode is supported. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that DND mode is supported, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.isSupportDoNotDisturbMode().then((data: boolean) => {
	console.info("supportDoNotDisturbMode success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`supportDoNotDisturbMode fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isSupportTemplate

isSupportTemplate(templateName: string, callback: AsyncCallback\<boolean\>): void

Checks whether a specified template is supported. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name      | Type                    | Mandatory| Description                      |
| ------------ | ------------------------ | ---- | -------------------------- |
| templateName | string                   | Yes  | Template name.                  |
| callback     | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. The value **true** means that the specified template is supported, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let templateName: string = 'process';
let isSupportTemplateCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isSupportTemplate failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("isSupportTemplate success");
    }
}

notificationManager.isSupportTemplate(templateName, isSupportTemplateCallback);
```

## notificationManager.isSupportTemplate

isSupportTemplate(templateName: string): Promise\<boolean\>

Checks whether a specified template is supported. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name      | Type  | Mandatory| Description    |
| ------------ | ------ | ---- | -------- |
| templateName | string | Yes  | Template name.|

**Return value**

| Type              | Description           |
| ------------------ | --------------- |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that the specified template is supported, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let templateName: string = 'process';
notificationManager.isSupportTemplate(templateName).then((data: boolean) => {
    console.info("isSupportTemplate success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isSupportTemplate fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.requestEnableNotification

requestEnableNotification(callback: AsyncCallback\<void\>): void

Requests notification to be enabled for this application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600004  | Notification is not enabled.          |
| 1600013  | Enable Notification Dialog has been popping already.          |

**Example**

```ts
import Base from '@ohos.base';

let requestEnableNotificationCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`requestEnableNotification failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("requestEnableNotification success");
    }
};
notificationManager.requestEnableNotification(requestEnableNotificationCallback);
```

## notificationManager.requestEnableNotification

requestEnableNotification(): Promise\<void\>

Requests notification to be enabled for this application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600004  | Notification is not enabled.          |
| 1600013  | Enable Notification Dialog has been popping already.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.requestEnableNotification().then(() => {
    console.info("requestEnableNotification success");
}).catch((err: Base.BusinessError) => {
    console.error(`requestEnableNotification fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.requestEnableNotification<sup>10+<sup>

requestEnableNotification(context: UIAbilityContext, callback: AsyncCallback\<void\>): void

Requests notification to be enabled for this application in a modal. This API uses an asynchronous callback to return the result.

**Model restriction**: This API can be used only in the stage model.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory| Description                |
| -------- | ------------------------ | ---- |--------------------|
| context | UIAbilityContext | Yes  | Ability context bound to the notification dialog box.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.    |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600004  | Notification is not enabled.          |
| 1600013  | Enable Notification Dialog has been popping already.          |

**Example**

```ts
import Base from '@ohos.base';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want';

class MyAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    let requestEnableNotificationCallback = (err: Base.BusinessError): void => {
      if (err) {
        console.error(`requestEnableNotification failed, code is ${err.code}, message is ${err.message}`);
      } else {
        console.info("requestEnableNotification success");
      }
    };
    notificationManager.requestEnableNotification(this.context, requestEnableNotificationCallback);
  }
}
```

## notificationManager.requestEnableNotification<sup>10+<sup>

requestEnableNotification(context: UIAbilityContext): Promise\<void\>

Requests notification to be enabled for this application in a modal. This API uses a promise to return the result.

**Model restriction**: This API can be used only in the stage model.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory| Description                |
| -------- | ------------------------ | ---- |--------------------|
| context | UIAbilityContext | Yes  | Ability context bound to the notification dialog box.|

**Return value**

| Type     | Description       | 
|---------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600004  | Notification is not enabled.          |
| 1600013  | Enable Notification Dialog has been popping already.          |

**Example**

```ts
import Base from '@ohos.base';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want';

class MyAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    notificationManager.requestEnableNotification(this.context).then(() => {
      console.info("requestEnableNotification success");
    }).catch((err: Base.BusinessError) => {
      console.error(`requestEnableNotification fail: ${JSON.stringify(err)}`);
    });
  }
}
```

## notificationManager.setDistributedEnable

setDistributedEnable(enable: boolean, callback: AsyncCallback\<void\>): void

Sets whether to enable distributed notification on this device. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| enable   | boolean                  | Yes  | Whether to enable distributed notification. The value **true** means to enable distributed notification, and **false** means the opposite.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600010  | Distributed operation failed.       |

**Example**

```ts
import Base from '@ohos.base';

let setDistributedEnableCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setDistributedEnable failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setDistributedEnable success");
    }
};
let enable: boolean = true;
notificationManager.setDistributedEnable(enable, setDistributedEnableCallback);
```

## notificationManager.setDistributedEnable

setDistributedEnable(enable: boolean): Promise\<void>

Sets whether to enable distributed notification on this device. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| enable   | boolean                  | Yes  | Whether to enable distributed notification. The value **true** means to enable distributed notification, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600010  | Distributed operation failed.       |

**Example**

```ts
import Base from '@ohos.base';

let enable: boolean = true;
notificationManager.setDistributedEnable(enable).then(() => {
    console.info("setDistributedEnable success");
}).catch((err: Base.BusinessError) => {
    console.error(`requestEnableNotification fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.isDistributedEnabled

isDistributedEnabled(callback: AsyncCallback\<boolean>): void

Checks whether distributed notification is enabled on this device. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. The value **true** means that distributed notification is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600010  | Distributed operation failed.       |

**Example**

```ts
import Base from '@ohos.base';

let isDistributedEnabledCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isDistributedEnabled failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("isDistributedEnabled success " + JSON.stringify(data));
    }
};
notificationManager.isDistributedEnabled(isDistributedEnabledCallback);
```



## notificationManager.isDistributedEnabled

isDistributedEnabled(): Promise\<boolean>

Checks whether distributed notification is enabled on this device. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Return value**

| Type              | Description                                         |
| ------------------ | --------------------------------------------- |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that distributed notification is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600010  | Distributed operation failed.       |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.isDistributedEnabled()
.then((data: boolean) => {
    console.info("isDistributedEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isDistributedEnabled fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.setDistributedEnableByBundle

setDistributedEnableByBundle(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void>): void

Sets whether to enable distributed notification for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)             | Yes  | Bundle information of the application.                  |
| enable   | boolean                  | Yes  | Whether to enable distributed notification. The value **true** means to enable distributed notification, and **false** means the opposite.|
| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600010  | Distributed operation failed.            |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let setDistributedEnableByBundleCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setDistributedEnableByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("enableDistributedByBundle success");
    }
};
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
let enable: boolean = true;
notificationManager.setDistributedEnableByBundle(bundle, enable, setDistributedEnableByBundleCallback);
```



## notificationManager.setDistributedEnableByBundle

setDistributedEnableByBundle(bundle: BundleOption, enable: boolean): Promise\<void>

Sets whether to enable distributed notification for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)             | Yes  | Bundle information of the application.               |
| enable   | boolean                  | Yes  | Whether to enable distributed notification. The value **true** means to enable distributed notification, and **false** means the opposite.                 |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600010  | Distributed operation failed.            |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
let enable: boolean = true;
notificationManager.setDistributedEnableByBundle(bundle, enable).then(() => {
    console.info("setDistributedEnableByBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`setDistributedEnableByBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.isDistributedEnabledByBundle

isDistributedEnabledByBundle(bundle: BundleOption, callback: AsyncCallback\<boolean>): void

Checks whether distributed notification is enabled for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)             | Yes  | Bundle information of the application.                    |
| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result. The value **true** means that distributed notification is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600010  | Distributed operation failed.            |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let isDistributedEnabledByBundleCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isDistributedEnabledByBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("isDistributedEnabledByBundle success" + JSON.stringify(data));
    }
};
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.isDistributedEnabledByBundle(bundle, isDistributedEnabledByBundleCallback);
```

## notificationManager.isDistributedEnabledByBundle

isDistributedEnabledByBundle(bundle: BundleOption): Promise\<boolean>

Checks whether distributed notification is enabled for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                    | Mandatory| Description                      |
| -------- | ------------------------ | ---- | -------------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)             | Yes  | Bundle information of the application.               |

**Return value**

| Type              | Description                                             |
| ------------------ | ------------------------------------------------- |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that distributed notification is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600010  | Distributed operation failed.            |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
notificationManager.isDistributedEnabledByBundle(bundle).then((data: boolean) => {
    console.info("isDistributedEnabledByBundle success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isDistributedEnabledByBundle fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.getDeviceRemindType

getDeviceRemindType(callback: AsyncCallback\<DeviceRemindType\>): void

Obtains the notification reminder type. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name  | Type                              | Mandatory| Description                      |
| -------- | --------------------------------- | ---- | -------------------------- |
| callback | AsyncCallback\<[DeviceRemindType](#deviceremindtype)\> | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

let getDeviceRemindTypeCallback = (err: Base.BusinessError, data: notificationManager.DeviceRemindType): void => {
    if (err) {
        console.error(`getDeviceRemindType failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`getDeviceRemindType success, data is ${JSON.stringify(data)}`);
    }
};
notificationManager.getDeviceRemindType(getDeviceRemindTypeCallback);
```

## notificationManager.getDeviceRemindType

getDeviceRemindType(): Promise\<DeviceRemindType\>

Obtains the notification reminder type. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System API**: This is a system API.

**Return value**

| Type              | Description           |
| ------------------ | --------------- |
| Promise\<[DeviceRemindType](#deviceremindtype)\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |

**Example**

```ts
import Base from '@ohos.base';

notificationManager.getDeviceRemindType().then((data: notificationManager.DeviceRemindType) => {
    console.info("getDeviceRemindType success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`getDeviceRemindType fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.publishAsBundle

publishAsBundle(request: NotificationRequest, representativeBundle: string, userId: number, callback: AsyncCallback\<void\>): void

Publishes a notification through the reminder agent. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name              | Type                                       | Mandatory| Description                                    |
| -------------------- | ------------------------------------------- | ---- | ---------------------------------------- |
| request              | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                      |
| userId               | number                                      | Yes  | User ID.                                |
| callback             | AsyncCallback\<void\>                        | Yes  | Callback used to return the result.                |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                 |
| -------- | ----------------------------------------- |
| 1600001  | Internal error.                           |
| 1600002  | Marshalling or unmarshalling error.       |
| 1600003  | Failed to connect service.                |
| 1600004  | Notification is not enabled.              |
| 1600005  | Notification slot is not enabled.         |
| 1600008  | The user is not exist.                    |
| 1600009  | Over max number notifications per second. |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// publishAsBundle callback
let callback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`publishAsBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("publishAsBundle success");
    }
}
// Bundle name of the application whose notification function is taken over by the reminder agent
let representativeBundle: string = "com.example.demo";
// User ID
let userId: number = 100;
// NotificationRequest object
let request: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};
notificationManager.publishAsBundle(request, representativeBundle, userId, callback);
```

## notificationManager.publishAsBundle

publishAsBundle(request: NotificationRequest, representativeBundle: string, userId: number): Promise\<void\>

Publishes a notification through the reminder agent. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**System API**: This is a system API.

**Parameters**


| Name              | Type                                       | Mandatory| Description                                         |
| -------------------- | ------------------------------------------- | ---- | --------------------------------------------- |
| request              | [NotificationRequest](js-apis-inner-notification-notificationRequest.md#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                           |
| userId               | number                                      | Yes  | User ID.                           |

**Return value**

| Type             | Description       | 
|-----------------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                 |
| -------- | ----------------------------------------- |
| 1600001  | Internal error.                           |
| 1600002  | Marshalling or unmarshalling error.       |
| 1600003  | Failed to connect service.                |
| 1600004  | Notification is not enabled.              |
| 1600005  | Notification slot is not enabled.         |
| 1600008  | The user is not exist.                    |
| 1600009  | Over max number notifications per second. |
| 1600012  | No memory space.                          |

**Example**

```ts
import Base from '@ohos.base';

// Bundle name of the application whose notification function is taken over by the reminder agent
let representativeBundle: string = "com.example.demo";
// User ID
let userId: number = 100;
// NotificationRequest object
let request: notificationManager.NotificationRequest = {
    id: 1,
    content: {
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        normal: {
            title: "test_title",
            text: "test_text",
            additionalText: "test_additionalText"
        }
    }
};
notificationManager.publishAsBundle(request, representativeBundle, userId).then(() => {
	console.info("publishAsBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`publishAsBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.cancelAsBundle

cancelAsBundle(id: number, representativeBundle: string, userId: number, callback: AsyncCallback\<void\>): void

Cancels a notification published by the reminder agent. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name              | Type         | Mandatory| Description                    |
| -------------------- | ------------- | ---- | ------------------------ |
| id                   | number        | Yes  | Notification ID.                |
| representativeBundle | string        | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.      |
| userId               | number        | Yes  | User ID.      |
| callback             | AsyncCallback | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

// cancelAsBundle
let cancelAsBundleCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`cancelAsBundle failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("cancelAsBundle success");
    }
}
// Bundle name of the application whose notification function is taken over by the reminder agent
let representativeBundle: string = "com.example.demo";
// User ID
let userId: number = 100;
notificationManager.cancelAsBundle(0, representativeBundle, userId, cancelAsBundleCallback);
```

## notificationManager.cancelAsBundle

cancelAsBundle(id: number, representativeBundle: string, userId: number): Promise\<void\>

Cancels a notification published by the reminder agent. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**System API**: This is a system API.

**Parameters**

| Name              | Type  | Mandatory| Description              |
| -------------------- | ------ | ---- | ------------------ |
| id                   | number | Yes  | Notification ID.          |
| representativeBundle | string | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.|
| userId               | number | Yes  | User ID.|

**Return value**

| Type             | Description       | 
|-----------------|-----------|
| Promise\<void\> | Promise that returns no value.| 

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

// Bundle name of the application whose notification function is taken over by the reminder agent
let representativeBundle: string = "com.example.demo";
// User ID
let userId: number = 100;
notificationManager.cancelAsBundle(0, representativeBundle, userId).then(() => {
	console.info("cancelAsBundle success");
}).catch((err: Base.BusinessError) => {
    console.error(`cancelAsBundle fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.setNotificationEnableSlot 

setNotificationEnableSlot(bundle: BundleOption, type: SlotType, enable: boolean, callback: AsyncCallback\<void>): void

Sets the enabled status of a notification slot type for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name  | Type                         | Mandatory| Description                  |
| -------- | ----------------------------- | ---- | ---------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.          |
| type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
| enable   | boolean                       | Yes  | Whether to enable the notification slot type. The value **true** means to enable the notification slot type, and **false** means the opposite.            |
| callback | AsyncCallback\<void\>         | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600012  | No memory space.                         |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

// setNotificationEnableSlot
let setNotificationEnableSlotCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setNotificationEnableSlot failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setNotificationEnableSlot success");
    }
};
notificationManager.setNotificationEnableSlot(
    { bundle: "ohos.samples.notification", },
    notificationManager.SlotType.SOCIAL_COMMUNICATION,
    true,
    setNotificationEnableSlotCallback);
```

## notificationManager.setNotificationEnableSlot<sup>11+</sup>

setNotificationEnableSlot(bundle: BundleOption, type: SlotType, enable: boolean, isForceControl: boolean, callback: AsyncCallback\<void>): void

Sets the enabled status of a slot type for the specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name  | Type                         | Mandatory| Description                    |
| -------- | ----------------------------- | ---- | ----------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.|
| type     | [SlotType](#slottype)         | Yes  | Notification slot type.          |
| enable   | boolean                       | Yes  | Whether to enable the notification slot type.              |
| isForceControl<sup>11+</sup> | boolean                 | Yes  | Whether the enabled status of the notification slot is subject to the enabled status of notification. The value **false** means that the enabled status of the notification slot is subject to the enabled status of notification, and **true** means the opposite.|
| callback | AsyncCallback\<void\>         | Yes  | Callback used to return the result.   |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600012  | No memory space.                         |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

let setNotificationEnableSlotCallback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setNotificationEnableSlot failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setNotificationEnableSlot success");
    }
};

notificationManager.setNotificationEnableSlot(
    { bundle: "ohos.samples.notification", },
    notificationManager.SlotType.SOCIAL_COMMUNICATION,
    true,
    false,
    setNotificationEnableSlotCallback);
```

## notificationManager.setNotificationEnableSlot

setNotificationEnableSlot(bundle: BundleOption, type: SlotType, enable: boolean, isForceControl?: boolean): Promise\<void>

Sets the enabled status of a notification slot type for the specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.  |
| type   | [SlotType](#slottype)         | Yes  | Notification slot type.|
| enable | boolean                       | Yes  | Whether to enable the notification slot type. The value **true** means to enable the notification slot type, and **false** means the opposite.    |
| isForceControl<sup>11+</sup> | boolean               | No  | Whether the enabled status of the notification slot is subject to the enabled status of notification. The value **false** means that the enabled status of the notification slot is subject to the enabled status of notification, and **true** means the opposite.<br> Default value: **false**    |

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 1600012  | No memory space.                         |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

// setNotificationEnableSlot
notificationManager.setNotificationEnableSlot(
    { bundle: "ohos.samples.notification", },
    notificationManager.SlotType.SOCIAL_COMMUNICATION,
    true).then(() => {
        console.info("setNotificationEnableSlot success");
    }).catch((err: Base.BusinessError) => {
        console.error(`setNotificationEnableSlot fail: ${JSON.stringify(err)}`);
    });
```

## notificationManager.isNotificationSlotEnabled

isNotificationSlotEnabled(bundle: BundleOption, type: SlotType, callback: AsyncCallback\<boolean\>): void

Checks whether a specified notification slot type is enabled for a specified application. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name  | Type                         | Mandatory| Description                  |
| -------- | ----------------------------- | ---- | ---------------------- |
| bundle   | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.          |
| type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result. The value **true** means that the notification slot type is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

// isNotificationSlotEnabled
let getEnableSlotCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.error(`isNotificationSlotEnabled failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info(`isNotificationSlotEnabled success, data is ${JSON.stringify(data)}`);
    }
};

notificationManager.isNotificationSlotEnabled(
    { bundle: "ohos.samples.notification", },
    notificationManager.SlotType.SOCIAL_COMMUNICATION,
    getEnableSlotCallback);
```

## notificationManager.isNotificationSlotEnabled

isNotificationSlotEnabled(bundle: BundleOption, type: SlotType): Promise\<boolean\>  

Checks whether a specified notification slot type is enabled for a specified application. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| bundle | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption) | Yes  | Bundle information of the application.  |
| type   | [SlotType](#slottype)         | Yes  | Notification slot type.|

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that the notification slot type is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                                |
| -------- | ---------------------------------------- |
| 1600001  | Internal error.                          |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

// isNotificationSlotEnabled
notificationManager.isNotificationSlotEnabled({ bundle: "ohos.samples.notification", },
    notificationManager.SlotType.SOCIAL_COMMUNICATION).then((data: boolean) => {
    console.info("isNotificationSlotEnabled success, data: " + JSON.stringify(data));
}).catch((err: Base.BusinessError) => {
    console.error(`isNotificationSlotEnabled fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.setSyncNotificationEnabledWithoutApp

setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean, callback: AsyncCallback\<void\>): void

Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| userId | number | Yes  | User ID.  |
| enable | boolean | Yes  | Whether to enable the notification sync feature. The value **true** means to enable the feature, and **false** means the opposite.  |
| callback | AsyncCallback\<void\>    | Yes  | Callback used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 100;
let enable: boolean = true;
let callback = (err: Base.BusinessError): void => {
    if (err) {
        console.error(`setSyncNotificationEnabledWithoutApp failed, code is ${err.code}, message is ${err.message}`);
    } else {
        console.info("setSyncNotificationEnabledWithoutApp success");
    }
}
notificationManager.setSyncNotificationEnabledWithoutApp(userId, enable, callback);
```


## notificationManager.setSyncNotificationEnabledWithoutApp

setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean): Promise\<void>

Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| userId | number | Yes  | User ID.  |
| enable | boolean | Yes  | Whether to enable the notification sync feature. The value **true** means to enable the feature, and **false** means the opposite.  |

**Return value**

| Type                                                       | Description                                                        |
| ----------------------------------------------------------- | ------------------------------------------------------------ |
| Promise\<void\> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 100;
let enable: boolean = true;
notificationManager.setSyncNotificationEnabledWithoutApp(userId, enable).then(() => {
    console.info('setSyncNotificationEnabledWithoutApp success');
}).catch((err: Base.BusinessError) => {
    console.error(`setSyncNotificationEnabledWithoutApp fail: ${JSON.stringify(err)}`);
});
```


## notificationManager.getSyncNotificationEnabledWithoutApp

getSyncNotificationEnabledWithoutApp(userId: number, callback: AsyncCallback\<boolean>): void

Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses an asynchronous callback to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| userId | number | Yes  | User ID.  |
| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result. The value **true** means that the notification sync feature is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 100;
let getSyncNotificationEnabledWithoutAppCallback = (err: Base.BusinessError, data: boolean): void => {
    if (err) {
        console.info('getSyncNotificationEnabledWithoutAppCallback, err:' + err);
    } else {
        console.info('getSyncNotificationEnabledWithoutAppCallback, data:' + data);
    }
}
notificationManager.getSyncNotificationEnabledWithoutApp(userId, getSyncNotificationEnabledWithoutAppCallback);
```


## notificationManager.getSyncNotificationEnabledWithoutApp

getSyncNotificationEnabledWithoutApp(userId: number): Promise\<boolean>

Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses a promise to return the result.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**Parameters**

| Name| Type                         | Mandatory| Description          |
| ------ | ----------------------------- | ---- | -------------- |
| userId | number | Yes  | User ID.  |

**Return value**

| Type              | Description                                                        |
| ------------------ | ------------------------------------------------------------ |
| Promise\<boolean\> | Promise used to return the result. The value **true** means that the notification sync feature is enabled, and **false** means the opposite.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600008  | The user is not exist.              |

**Example**

```ts
import Base from '@ohos.base';

let userId: number = 100;
notificationManager.getSyncNotificationEnabledWithoutApp(userId).then((data: boolean) => {
  console.info('getSyncNotificationEnabledWithoutApp, data:' + data);
}).catch((err: Base.BusinessError) => {
    console.error(`getSyncNotificationEnabledWithoutApp fail: ${JSON.stringify(err)}`);
});
```

## notificationManager.on<sup>10+</sup>

on(type: 'checkNotification', callback: (checkInfo: NotificationCheckInfo) => NotificationCheckResult): void;

Subscribes to notification events. The notification service sends the notification information in the callback to the verification program. The verification program returns the verification result to determine whether to publish the notification, for example, controlling the publish frequency of marketing notifications.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**Parameters**

| Name| Type                                                                                                                     | Mandatory| Description          |
| ------ |-------------------------------------------------------------------------------------------------------------------------| ---- | -------------- |
| type | string                                                                                                                  | Yes  | Event type. The value is fixed to **'checkNotification'**.|
| callback | (checkInfo: [NotificationCheckInfo](#notificationcheckinfo10)) =>  [NotificationCheckResult](#notificationcheckresult10) | Yes  | Pointer to the notification verification function.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |

**Example**

```ts
import Base from '@ohos.base';

let onCheckNotification = (info : notificationManager.NotificationCheckInfo): notificationManager.NotificationCheckResult => {
    console.info(`====>OnCheckNotification info: ${JSON.stringify(info)}`);
    if(info.notificationId == 1){
        let result: notificationManager.NotificationCheckResult =  { code: 1, message: "testMsg1"};
        return result;
    } else {
        let result: notificationManager.NotificationCheckResult =   { code: 0, message: "testMsg0"};
        return result;
    }
}
try{
    notificationManager.on("checkNotification", onCheckNotification);
} catch (error){
    console.error(`notificationManager.on error: ${JSON.stringify(error as Base.BusinessError)}`);
}
```

## notificationManager.on<sup>11+</sup>

on(type: 'checkNotification', checkRequest: NotificationCheckRequest, callback: (checkInfo: NotificationCheckInfo) => Promise\<NotificationCheckResult\>): void

Subscribes to notification events. The notification service sends the notification information in the callback to the verification program. The verification program returns the verification result to determine whether to publish the notification, for example, controlling the publish frequency of marketing notifications. This API uses a promise to return the URI of the file in the destination directory.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**Parameters**

| Name| Type                                                                                                            | Mandatory| Description          |
| ------ |-----------------------------------------------------------------------------------------------------------------| ---- | -------------- |
| type | string                                                                                                            | Yes  | Event type. The value is fixed to **'checkNotification'**.|
| checkRequest | [NotificationCheckRequest](js-apis-inner-notification-notificationRequest.md#notificationcheckrequest11)    | Yes  | Notification verification content.|
| callback | (checkInfo: [NotificationCheckInfo](#notificationcheckinfo10)) =>  Promise\<[NotificationCheckResult](#notificationcheckresult10)\> | Yes  | Pointer to the notification verification function.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error.      |
| 1600003  | Failed to connect service.               |

**Example**

```ts
import Base from '@ohos.base';

public static async check(checkInfo : notificationManager.NotificationCheckInfo): Promise<NotificationCheckResult> {
    console.info(`====>OnCheckNotification info: ${JSON.stringify(info)}`);
    const { contentType, slotType, bundleName, userId, extraInfos } = checkInfo;
    if(contentType != NOTIFICATION_CONTENT_LIVE_VIEW){
        let result: notificationManager.NotificationCheckResult =  { code: 1, message: "INVALID_PARAMETERS"};
        return result;
    } else {
        let result: notificationManager.NotificationCheckResult =  { code: 0, message: "SUCCESS"};
        return result;
    }
}

try {
    notificationManager.on(
      "checkNotification",
      {
        contentType: ContentType.NOTIFICATION_CONTENT_LIVE_VIEW,
        slotType: SlotType.LIVE_VIEW ,
        extraInfoKeys: ["event"],
      },
      check
    );
} catch (error) {
    console.info(`notificationManager.on error: ${JSON.stringify(error as Base.BusinessError)}`);
}
```

## notificationManager.off<sup>10+</sup>

off(type: 'checkNotification', callback?: (checkInfo: NotificationCheckInfo) => NotificationCheckResult): void;

Unsubscribes from notification events.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

**Parameters**

| Name| Type                                                                                                                     | Mandatory| Description          |
| ------ |-------------------------------------------------------------------------------------------------------------------------| ---- | -------------- |
| type | string                                                                                                                  | Yes  | Event type. The value is fixed to **'checkNotification'**.|
| callback | (checkInfo: [NotificationCheckInfo](#notificationcheckinfo10)) =>  [NotificationCheckResult](#notificationcheckresult10) | No  | Pointer to the notification verification function.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |

**Example**

```ts
import Base from '@ohos.base';

try{
    notificationManager.off("checkNotification");
} catch (error){
    console.error(`notificationManager.off error: ${JSON.stringify(error as Base.BusinessError)}`);
}
```

## notificationManager.triggerSystemLiveView<sup>11+</sup>

triggerSystemLiveView(bundle: BundleOption, notificationId: number, buttonOptions: ButtonOptions): Promise\<void>;

Triggers a system live view notification. This API uses a promise to return the URI of the file in the destination directory.

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name| Type                  | Mandatory| Description          |
| -------------- | ------------- | ---- | -------------- |
| bundle         | [BundleOption](./js-apis-inner-notification-notificationCommonDef.md#bundleoption)  | Yes  |Bundle of the application.|
| notificationId | number        | Yes  | Notification ID.|
| buttonOptions  | [ButtonOptions](#buttonoptions11) | Yes  | Button information.|

**Return value**

| Type| Description|
| ---- | ----|
| Promise\<void> | Promise that returns no value.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600007  | The notification is not exist.      |
| 17700001 | The specified bundle name was not found. |

**Example**

```ts
import Base from '@ohos.base';

// Bundle of the application
let bundle: notificationManager.BundleOption = {
    bundle: "bundleName1",
};
// Notification ID
let notificationId = 1;
// Button information
let buttonOptions: notificationManager.ButtonOptions = {
    buttonName: "buttonName1",
}
notificationManager.triggerSystemLiveView(bundle, notificationId, buttonOptions).then(() => {
  console.info("triggerSystemLiveView success");
}).catch((error: Base.BusinessError) => {
  console.error(`triggerSystemLiveView fail: ${JSON.stringify(error)}`);
});
```


## notificationManager.subscribeSystemLiveView<sup>11+</sup>

subscribeSystemLiveView(subscriber: SystemLiveViewSubscriber): Promise\<void>;

Subscribes to the system live view notification. This API uses a promise to return the URI of the file in the destination directory.

**System API**: This is a system API.

**System capability**: SystemCapability.Notification.Notification

**Parameters**

| Name| Type                  | Mandatory| Description          |
| -------------- | ------------- | ---- | -------------- |
| subscriber | [SystemLiveViewSubscriber](#systemliveviewsubscriber11)  | Yes  | Subscriber of the system live view notification.|

**Return value**

| Type| Description|
| ---- | ----|
| Promise\<void> | Promise that returns no value.|

**Error codes**

For details about the error codes, see [Notification Error Codes](../errorcodes/errorcode-notification.md).

| ID| Error Message                           |
| -------- | ----------------------------------- |
| 1600001  | Internal error.                     |
| 1600002  | Marshalling or unmarshalling error. |
| 1600003  | Failed to connect service.          |
| 1600012  | No memory space.                    |

**Example**

```ts
import Base from '@ohos.base';

let onResponseCallback = (id:number, option:notificationManager.ButtonOptions) => {
    console.info("response callback: " + JSON.stringify(option) + "notificationId" + id);
}
let subscriber: notificationManager.SystemLiveViewSubscriber  = {
    onResponse: onResponseCallback,
};
notificationManager.subscribeSystemLiveView(subscriber).then(() => {
	console.info("subscribeSystemLiveView success");
}).catch((error: Base.BusinessError) => {
    console.error(`subscribeSystemLiveView fail: ${JSON.stringify(error)}`);
});
```



## DoNotDisturbDate

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

| Name | Type                                 | Mandatory| Description                  |
| ----- | ------------------------------------- | ---- | ---------------------- |
| type  | [DoNotDisturbType](#donotdisturbtype) | Yes  | DND time type.|
| begin | Date                                  | Yes  | DND start time.|
| end   | Date                                  | Yes  | DND end time.|

## DoNotDisturbType

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

| Name        | Value              | Description                                      |
| ------------ | ---------------- | ------------------------------------------ |
| TYPE_NONE    | 0 | Non-DND.                          |
| TYPE_ONCE    | 1 | One-shot DND at the specified time segment (only considering the hour and minute).|
| TYPE_DAILY   | 2 | Daily DND at the specified time segment (only considering the hour and minute).|
| TYPE_CLEARLY | 3 | DND at the specified time segment (with the hour, day, and month specified).    |


## ContentType

**System capability**: SystemCapability.Notification.Notification

| Name                             | Value         | Description              |
| --------------------------------- | ----------- |------------------|
| NOTIFICATION_CONTENT_BASIC_TEXT   | 0          | Normal text notification.         |
| NOTIFICATION_CONTENT_LONG_TEXT    | 1          | Long text notification.        |
| NOTIFICATION_CONTENT_PICTURE      | 2          | Picture-attached notification.         |
| NOTIFICATION_CONTENT_CONVERSATION | 3          | Conversation notification (not supported currently).|
| NOTIFICATION_CONTENT_MULTILINE    | 4          | Multi-line text notification.       |
| NOTIFICATION_CONTENT_SYSTEM_LIVE_VIEW<sup>11+</sup>    | 5 | Live view notification (for system applications only).       |
| NOTIFICATION_CONTENT_LIVE_VIEW<sup>11+</sup>    | 6 | Common live view notification. |

## SlotLevel

**System capability**: SystemCapability.Notification.Notification

| Name                             | Value         | Description              |
| --------------------------------- | ----------- | ------------------ |
| LEVEL_NONE                        | 0           | Notification is disabled.    |
| LEVEL_MIN                         | 1           | Notification is enabled, but the notification icon is not displayed in the status bar, with no banner or alert tone.|
| LEVEL_LOW                         | 2           | Notification is enabled, and the notification icon is displayed in the status bar, with no banner or alert tone.|
| LEVEL_DEFAULT                     | 3           | Notification is enabled, and the notification icon is displayed in the status bar, with an alert tone but no banner.|
| LEVEL_HIGH                        | 4           | Notification is enabled, and the notification icon is displayed in the status bar, with an alert tone and banner.|


## SlotType

**System capability**: SystemCapability.Notification.Notification

| Name                | Value      | Description      |
| -------------------- | -------- | ---------- |
| UNKNOWN_TYPE         | 0 | Unknown type.|
| SOCIAL_COMMUNICATION | 1 | Notification slot for social communication.|
| SERVICE_INFORMATION  | 2 | Notification slot for service information.|
| CONTENT_INFORMATION  | 3 | Notification slot for content consultation.|
| LIVE_VIEW<sup>11+</sup>            | 4 | Notification slot for live view (for system applications only).|
| CUSTOMER_SERVICE<sup>11+</sup>     | 5 | Notification slot for customer service. This type is used for messages between users and customer service providers. The messages must be initiated by users. |
| OTHER_TYPES          | 0xFFFF | Notification slot for other purposes.|




## DeviceRemindType

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

| Name                | Value | Description                              |
| -------------------- | --- | --------------------------------- |
| IDLE_DONOT_REMIND    | 0   | The device is not in use. No notification is required.           |
| IDLE_REMIND          | 1   | The device is not in use.                |
| ACTIVE_DONOT_REMIND  | 2   | The device is in use. No notification is required.           |
| ACTIVE_REMIND        | 3   | The device is in use.                |


## SourceType

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

| Name                | Value | Description                 |
| -------------------- | --- | -------------------- |
| TYPE_NORMAL          | 0   | Normal notification.           |
| TYPE_CONTINUOUS      | 1   | Continuous notification.           |
| TYPE_TIMER           | 2   | Timed notification.           |

## NotificationCheckInfo<sup>10+</sup>

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

| Name                        | Type                        | Mandatory| Description           |
| ---------------------------- | ---------------------------- | --- | --------------- |
| bundleName                   | string                       | Yes  | Bundle name.   |
| notificationId               | number                       | Yes  | Notification ID.       |
| label<sup>11+</sup>          | string                       | No  | Notification label.     |
| contentType                  | [ContentType](#contenttype)  | Yes  | Notification type.     |
| creatorUserId<sup>11+</sup>  | number                       | Yes  | User ID of the notification.|
| slotType<sup>11+</sup>       | [SlotType](#slottype)        | Yes  | Notification slot type.     |
| extraInfos<sup>11+</sup>     | [key: string]: object        | No  | Extra information of the notification.|

## NotificationCheckResult<sup>10+</sup>

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER

| Name   | Type                                 | Mandatory| Description                  |
| ------- | ------------------------------------ | ---- | ---------------------- |
| code    | number                               | Yes  | Result code.<br>**0**: display.<br>**1**: no display.|
| message | string                               | Yes  | Result.   |


## ButtonOptions<sup>11+</sup>

Provides the button information of the notification.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.

**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER


| Name   | Type                                 | Mandatory| Description                  |
| ------- | ------------------------------------ | ---- | ---------------------- |
| buttonName    | string                         | Yes  | Button name.|


## SystemLiveViewSubscriber<sup>11+</sup>

Subscriber of the system live view notification.

**System capability**: SystemCapability.Notification.Notification

**System API**: This is a system API.


| Name   | Type                                 | Mandatory| Description                  |
| ------- | ------------------------------------ | ---- | ---------------------- |
| onResponse    | (notificationId: number, buttonOptions: ButtonOptions) => void;                         | No  | Callback when the button is touched.|