# @ohos.application.missionManager (missionManager)

The **missionManager** module provides APIs to lock, unlock, and clear missions, and switch a mission to the foreground.

> **NOTE**
> 
> The APIs of this module are supported since API version 8 and deprecated since API version 9. You are advised to use [@ohos.app.ability.missionManager](js-apis-app-ability-missionManager.md) instead. Newly added APIs will be marked with a superscript to indicate their earliest API version.

## Modules to Import

```ts
import missionManager from '@ohos.application.missionManager';
```

## Required Permissions

ohos.permission.MANAGE_MISSIONS

## missionManager.registerMissionListener

registerMissionListener(listener: MissionListener): number;

Registers a listener to observe the mission status.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | listener | [MissionListener](js-apis-inner-application-missionListener.md) | Yes| Mission status listener to register.|

**Return value**

  | Type| Description|
  | -------- | -------- |
  | number | Index of the mission status listener, which is created by the system and allocated when the listener is registered.|

**Example**

```ts
import missionManager from '@ohos.application.missionManager';

console.log('registerMissionListener');
let listenerid = missionManager.registerMissionListener({
  onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
  onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
  onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
  onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
  onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
  onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
  onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
});
```


## missionManager.unregisterMissionListener

unregisterMissionListener(listenerId: number, callback: AsyncCallback<void>): void;

Deregisters a mission status listener. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | listenerId | number | Yes| Index of the mission status listener to deregister. It is returned by **registerMissionListener()**.|
  | callback | AsyncCallback<void> | Yes| Callback used to return the result.|

**Example**

```ts
  import missionManager from '@ohos.application.missionManager';

  console.log('registerMissionListener');
  let listenerid = missionManager.registerMissionListener({
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
  });

  missionManager.unregisterMissionListener(listenerid, (error) => {
      console.error('unregisterMissionListener fail, error: ${error}');
  });
```


## missionManager.unregisterMissionListener

unregisterMissionListener(listenerId: number): Promise<void>;

Deregisters a mission status listener. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | listenerId | number | Yes| Index of the mission status listener to deregister. It is returned by **registerMissionListener()**.|

**Return value**

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

**Example**

```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  console.log('registerMissionListener');
  let listenerid = missionManager.registerMissionListener({
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
  });

  missionManager.unregisterMissionListener(listenerid).catch((error: BusinessError) => {
      console.error('unregisterMissionListener fail, error: ${error}');
  });
```


## missionManager.getMissionInfo

getMissionInfo(deviceId: string, missionId: number, callback: AsyncCallback<MissionInfo>): void;

Obtains the information about a given mission. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | missionId | number | Yes| Mission ID.|
  | callback | AsyncCallback<[MissionInfo](js-apis-inner-application-missionInfo.md)> | Yes| Callback used to return the mission information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let allMissions=missionManager.getMissionInfos('',10).catch((err: BusinessError) => {
    console.log('${err}');});
  missionManager.getMissionInfo('', allMissions[0].missionId, (error, mission) => {
    if (error.code) {
      console.error('getMissionInfo failed, error.code: ${error.code}, error.message: ${error.message}');
      return;
    }

    console.log('mission.missionId = ${mission.missionId}');
    console.log('mission.runningState = ${mission.runningState}');
    console.log('mission.lockedState = ${mission.lockedState}');
    console.log('mission.timestamp = ${mission.timestamp}');
    console.log('mission.label = ${mission.label}');
    console.log('mission.iconPath = ${mission.iconPath}');
  });
  ```


## missionManager.getMissionInfo

getMissionInfo(deviceId: string, missionId: number): Promise<MissionInfo>;

Obtains the information about a given mission. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | missionId | number | Yes| Mission ID.|

**Return value**

  | Type| Description|
  | -------- | -------- |
  | Promise<[MissionInfo](js-apis-inner-application-missionInfo.md)> | Promise used to return the mission information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let mission = missionManager.getMissionInfo('', 10).catch((error: BusinessError) => {
      console.error('getMissionInfo fail, error: ${error}');
  });
  ```


## missionManager.getMissionInfos

getMissionInfos(deviceId: string, numMax: number, callback: AsyncCallback<Array<MissionInfo>>): void;

Obtains information about all missions. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | numMax | number | Yes| Maximum number of missions whose information can be obtained.|
  | callback | AsyncCallback<Array<[MissionInfo](js-apis-inner-application-missionInfo.md)>> | Yes| Callback used to return the array of mission information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
      if (error.code) {
          console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
          return;
      }
      console.log(`size = ${missions.length}`);
      console.log(`missions = ${JSON.stringify(missions)}`);
  });
  ```


## missionManager.getMissionInfos

getMissionInfos(deviceId: string, numMax: number): Promise<Array<MissionInfo>>;

Obtains information about all missions. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | numMax | number | Yes| Maximum number of missions whose information can be obtained.|

**Return value**

  | Type| Description|
  | -------- | -------- |
  | Promise<Array<[MissionInfo](js-apis-inner-application-missionInfo.md)>> | Promise used to return the array of mission information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let allMissions = missionManager.getMissionInfos('', 10).catch((error: BusinessError) => {
      console.error('getMissionInfos fail, error: ${error}');
  });
  ```


## missionManager.getMissionSnapShot

getMissionSnapShot(deviceId: string, missionId: number, callback: AsyncCallback<MissionSnapshot>): void;

Obtains the snapshot of a given mission. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | missionId | number | Yes| Mission ID.|
  | callback | AsyncCallback<[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)> | Yes| Callback used to return the snapshot information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.getMissionSnapShot('', id, (error, snapshot) => {
      if (error.code) {
          console.error(`getMissionSnapShot failed, error.code: ${error.code}, error.message: ${error.message}`);
          return;
      }
      console.log(`bundleName = ${snapshot.ability.bundleName}`);
    });
  });
  ```


## missionManager.getMissionSnapShot

getMissionSnapShot(deviceId: string, missionId: number): Promise<MissionSnapshot>;

Obtains the snapshot of a given mission. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | deviceId | string | Yes| Device ID. It is a null string by default for the local device.|
  | missionId | number | Yes| Mission ID.|

**Return value**

  | Type| Description|
  | -------- | -------- |
  | Promise<[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)> | Promise used to return the snapshot information obtained.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let id: number = -1;
  missionManager.getMissionInfos('',10).then((res) => {
    let allMissions = res;
    console.log(`size = ${allMissions.length}`);
    console.log(`missions = ${JSON.stringify(allMissions)}`);
    id = allMissions[0].missionId;
  }).catch((error: BusinessError) => {
    console.error(`getMissionInfos fail, error: ${error}`);
  });

  let snapshot = missionManager.getMissionSnapShot('', id).catch((error: BusinessError) => {
    console.error(`getMissionSnapShot fail, error: ${error}`);
  });
  ```

## missionManager.lockMission

lockMission(missionId: number, callback: AsyncCallback<void>): void;

Locks a given mission. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.lockMission(id).then(() => {
  	  console.log('lockMission is called ');
    });
  });
  ```


## missionManager.lockMission

lockMission(missionId: number): Promise<void>;

Locks a given mission. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | missionId | number | Yes| Mission ID.|

**Return value**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let id: number = -1;
  missionManager.getMissionInfos('',10).then((res) => {
    let allMissions = res;
    console.log(`size = ${allMissions.length}`);
    console.log(`missions = ${JSON.stringify(allMissions)}`);
    id = allMissions[0].missionId;
  }).catch((error: BusinessError) => {
      console.error(`getMissionInfos fail, error: ${error}`);
  });

  missionManager.lockMission(id).catch((error: BusinessError) => {
      console.error(`lockMission fail, error: ${error}`);
  });
  ```


## missionManager.unlockMission

unlockMission(missionId: number, callback: AsyncCallback<void>): void;

Unlocks a given mission. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.unlockMission(id).then(() => {
  	  console.log('unlockMission is called ');
    });
  });
  ```


## missionManager.unlockMission

unlockMission(missionId: number): Promise<void>;

Unlocks a given mission. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | missionId | number | Yes| Mission ID.|

**Return value**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let id: number = -1;
  missionManager.getMissionInfos('',10).then((res) => {
    let allMissions = res;
    console.log(`size = ${allMissions.length}`);
    console.log(`missions = ${JSON.stringify(allMissions)}`);
    id = allMissions[0].missionId;
  }).catch((error: BusinessError) => {
      console.error(`getMissionInfos fail, error: ${error}`);
  });

  missionManager.lockMission(id).catch((error: BusinessError) => {
      console.error(`lockMission fail, error: ${error}`);
  });
  missionManager.unlockMission(id).catch((error: BusinessError) => {
      console.error(`unlockMission fail, error: ${error}`);
  });
  ```


## missionManager.clearMission

clearMission(missionId: number, callback: AsyncCallback<void>): void;

Clears a given mission, regardless of whether it is locked. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.clearMission(id).then(() => {
  	  console.log('clearMission is called ');
    });
  });
  ```


## missionManager.clearMission

clearMission(missionId: number): Promise<void>;

Clears a given mission, regardless of whether it is locked. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | missionId | number | Yes| Mission ID.|

**Return value**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let id: number = -1;
  missionManager.getMissionInfos('',10).then((res) => {
    let allMissions = res;
    console.log(`size = ${allMissions.length}`);
    console.log(`missions = ${JSON.stringify(allMissions)}`);
    id = allMissions[0].missionId;
  }).catch((error: BusinessError) => {
      console.error(`getMissionInfos fail, error: ${error}`);
  });

  missionManager.clearMission(id).catch((error: BusinessError) => {
    console.error(`clearMission fail, error: ${error}`);
  });
  ```


## missionManager.clearAllMissions

clearAllMissions(callback: AsyncCallback<void>): void;

Clears all unlocked missions. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager'

  missionManager.clearAllMissions().then(() => {
    console.log('clearAllMissions is called ');
  });
  ```


## missionManager.clearAllMissions

clearAllMissions(): Promise<void>;

Clears all unlocked missions. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Return value**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  missionManager.clearAllMissions().catch((error: BusinessError) => {
      console.error('clearAllMissions fail, error: ${error}');
  });
  ```


## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, callback: AsyncCallback<void>): void;

Switches a given mission to the foreground. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.moveMissionToFront(id).then(() => {
  	  console.log('moveMissionToFront is called ');
    });
  });
  ```


## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, options: StartOptions, callback: AsyncCallback<void>): void;

Switches a given mission to the foreground, with the startup parameters for the switching specified. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | missionId | number | Yes| Mission ID.|
  | options | [StartOptions](js-apis-app-ability-startOptions.md) | Yes| Startup parameters, which are used to specify the window mode and device ID for switching the mission to the foreground.|
  | callback | AsyncCallback<void> | Yes| Callback used to return the result.|

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';

  missionManager.getMissionInfos('', 10, (error, missions) => {
    if (error.code) {
        console.error(`getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}`);
        return;
    }
    console.log(`size = ${missions.length}`);
    console.log(`missions = ${JSON.stringify(missions)}`);
    let id = missions[0].missionId;

    missionManager.moveMissionToFront(id,{windowMode : 101}).then(() => {
  	  console.log('moveMissionToFront is called ');
    });
  });
  ```


## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, options?: StartOptions): Promise<void>;

Switches a given mission to the foreground, with the startup parameters for the switching specified. This API uses a promise to return the result.

**Required permissions**: ohos.permission.MANAGE_MISSIONS

**System capability**: SystemCapability.Ability.AbilityRuntime.Mission

**System API**: This is a system API and cannot be called by third-party applications.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | missionId | number | Yes| Mission ID.|
  | options | [StartOptions](js-apis-app-ability-startOptions.md) | No| Startup parameters, which are used to specify the window mode and device ID for switching the mission to the foreground.|

**Return value**

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

**Example**

  ```ts
  import missionManager from '@ohos.application.missionManager';
  import { BusinessError } from '@ohos.base';

  let id: number = -1;
  missionManager.getMissionInfos('',10).then((res) => {
    let allMissions = res;
    console.log(`size = ${allMissions.length}`);
    console.log(`missions = ${JSON.stringify(allMissions)}`);
    id = allMissions[0].missionId;
  }).catch((error: BusinessError) => {
      console.error(`getMissionInfos fail, error: ${error}`);
  });

  missionManager.moveMissionToFront(id).catch((error: BusinessError) => {
    console.error(`moveMissionToFront fail, error: ${error}`);
  });
  ```