1# ProcessData 2 3The **ProcessData** module defines process data. If a lifecycle change listener is registered by calling [registerApplicationStateObserver](js-apis-application-appManager.md#appmanagerregisterapplicationstateobserver), the **onProcessCreated** callback in [ApplicationStateObserver](js-apis-inner-application-applicationStateObserver.md) is invoked when the lifecycle of an application or ability changes. 4 5> **NOTE** 6> 7> The initial APIs of this module are supported since API version 8. 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 '@ohos.application.appManager'; 13``` 14 15## Attributes 16 17**System capability**: SystemCapability.Ability.AbilityRuntime.Core 18 19**System API**: This is a system API and cannot be called by third-party applications. 20 21| Name | Type | Read-only| Mandatory| Description | 22| ----------------------- | ---------| ---- | ---- | ------------------------- | 23| pid | number | No | Yes | Process ID. | 24| bundleName | string | No | Yes | Bundle name of the application. | 25| uid | number | No | Yes | UID of the application. | 26| isContinuousTask<sup>9+</sup> | boolean | No | Yes | Whether the task is a continuous task. The value **true** means that the task is a continuous task, and **false** means the opposite. | 27| isKeepAlive<sup>9+</sup> | boolean | No | Yes | Whether the process is a resident task. The value **true** means that the process is a resident, and **false** means the opposite. | 28| state<sup>9+</sup> | number | No | Yes | Application state. The options are as follows:<br>**0**: newly created.<br>**1**: ready.<br>**2**: running in the foreground.<br>**4**: running in the background.<br>**5**: terminated. | 29 30**Example** 31```ts 32import appManager from '@ohos.app.ability.appManager'; 33 34let observerCode = appManager.on('applicationState', { 35 onForegroundApplicationChanged(appStateData) { 36 console.log(`onForegroundApplicationChanged appStateData: ${JSON.stringify(appStateData)}`); 37 }, 38 onAbilityStateChanged(abilityStateData) { 39 console.log(`onAbilityStateChanged onAbilityStateChanged: ${JSON.stringify(abilityStateData)}`); 40 }, 41 onProcessCreated(processData) { 42 console.log(`onProcessCreated onProcessCreated: ${JSON.stringify(processData)}`); 43 }, 44 onProcessDied(processData) { 45 console.log(`onProcessDied onProcessDied: ${JSON.stringify(processData)}`); 46 }, 47 onProcessStateChanged(processData) { 48 console.log(`onProcessStateChanged processData.pid : ${JSON.stringify(processData.pid)}`); 49 console.log(`onProcessStateChanged processData.bundleName : ${JSON.stringify(processData.bundleName)}`); 50 console.log(`onProcessStateChanged processData.uid : ${JSON.stringify(processData.uid)}`); 51 console.log(`onProcessStateChanged processData.isContinuousTask : ${JSON.stringify(processData.isContinuousTask)}`); 52 console.log(`onProcessStateChanged processData.isKeepAlive : ${JSON.stringify(processData.isKeepAlive)}`); 53 } 54}); 55``` 56