1# AbilityStateData 2 3The module defines the ability state information, which can be obtained through the **onAbilityStateChanged** lifecycle callback of [ApplicationStateObserver](js-apis-inner-application-applicationStateObserver.md). The callback can be invoked after a lifecycle change listener is registered through [on](js-apis-app-ability-appManager.md#appmanageronapplicationstate14). 4 5> **NOTE** 6> 7> The initial APIs of this module are supported since API version 14. Newly added APIs will be marked with a superscript to indicate their earliest API version. 8 9## Modules to Import 10 11```ts 12import { appManager } from '@kit.AbilityKit'; 13``` 14 15## Properties 16 17**System capability**: SystemCapability.Ability.AbilityRuntime.Core 18 19| Name | Type | Read-Only| Optional| Description | 20| ----------------------- | ---------| ---- | ---- | ------------------------- | 21| pid | number | No | No | Process ID. | 22| bundleName | string | No | No | Bundle name. | 23| abilityName | string | No | No | Ability name. | 24| uid | number | No | No | User ID. | 25| state | number | No | No | Ability state.<br>- In the stage model, the states of a UIAbility are described in [Ability States](#ability-states), and the states of an ExtensionAbility are described in [ExtensionAbility States](#extensionability-states).<br>- In the FA model, the states of an ability are described in [Ability States](#ability-states). | 26| moduleName | string | No | No | Name of the HAP file to which the ability belongs. | 27| abilityType | number | No | No | [Ability type](#ability-types), which can be **page** or **service**.| 28| isAtomicService | boolean | No | No | Whether the ability belongs to an atomic service.<br>- **true**: The ability belongs to an atomic service.<br>- **false**: The ability does not belong to an atomic service. | 29| appCloneIndex | number | No | Yes | Index of an application clone. | 30 31### Ability States 32 33| State | Value | Description | 34| -------------------------- | --- | ---------------------- | 35| ABILITY_STATE_CREATE | 0 | The ability is being created. | 36| ABILITY_STATE_READY | 1 | The ability has been created. | 37| ABILITY_STATE_FOREGROUND | 2 | The ability is running in the foreground. | 38| ABILITY_STATE_FOCUS | 3 | The ability has focus. | 39| ABILITY_STATE_BACKGROUND | 4 | The ability is running in the background. | 40| ABILITY_STATE_TERMINATED | 5 | The ability is terminated. | 41| ABILITY_STATE_CONNECTED | 7 | The background service is connected to the client.| 42| ABILITY_STATE_DISCONNECTED | 8 | The background service is disconnected from the client.| 43 44### ExtensionAbility States 45| State | Value| Description | 46| ---------------------- | ---- | ---------------------- | 47| EXTENSION_STATE_CREATE | 0 | The ExtensionAbility is being created. | 48| EXTENSION_STATE_READY | 1 | The ExtensionAbility has been created. | 49| EXTENSION_STATE_CONNECTED | 2 | The ExtensionAbility is connected to the client. | 50| EXTENSION_STATE_DISCONNECTED | 3 | The ExtensionAbility is disconnected from the client.| 51| EXTENSION_STATE_TERMINATED | 4 | The ExtensionAbility is terminated. | 52 53### Ability Types 54 55| State | Value | Description | 56| ------ | ------- | --------------------- | 57| UNKNOWN | 0 | Unknown type. | 58| PAGE | 1 | Ability that has the UI. | 59| SERVICE | 2 | Ability that provides the background service.| 60| DATA | 3 | Ability that provides the data service. | 61| FORM | 4 | Ability that provides the widget service. | 62| EXTENSION | 5 | Ability that provides extension capabilities.| 63