1# ProcessData 2 3The **ProcessData** module defines process data. If a lifecycle change listener is registered by calling [registerApplicationStateObserver](js-apis-application-appManager.md#appmanagerregisterapplicationstateobserver8), the **onProcessCreated** callback in [ApplicationStateObserver](js-apis-inner-application-applicationStateObserver.md) is invoked when the lifecycle of an application or ability changes. 4 5**System capability**: SystemCapability.Ability.AbilityRuntime.Core 6 7**System API**: This is a system API and cannot be called by third-party applications. 8 9| Name | Type | Readable| Writable| Description | 10| ----------------------- | ---------| ---- | ---- | ------------------------- | 11| pid<sup>8+</sup> | number | Yes | No | Process ID. | 12| bundleName<sup>8+</sup> | string | Yes | No | Bundle name of the application. | 13| uid<sup>8+</sup> | number | Yes | No | UID of the application. | 14| isContinuousTask<sup>9+</sup> | boolean | Yes | No | Whether the task is a continuous task. The value **true** means that the task is a continuous task, and **false** means the opposite. | 15| isKeepAlive<sup>9+</sup> | boolean | Yes | No | Whether the process is a resident task. The value **true** means that the process is a resident, and **false** means the opposite. | 16 17**Example** 18```ts 19import appManager from '@ohos.application.appManager'; 20 21let applicationStateObserver = { 22 onForegroundApplicationChanged(appStateData) { 23 console.log('onForegroundApplicationChanged appStateData: ' + JSON.stringify(appStateData)); 24 }, 25 onAbilityStateChanged(abilityStateData) { 26 console.log('onAbilityStateChanged onAbilityStateChanged: ' + JSON.stringify(abilityStateData)); 27 }, 28 onProcessCreated(processData) { 29 console.log('onProcessCreated onProcessCreated: ' + JSON.stringify(processData)); 30 }, 31 onProcessDied(processData) { 32 console.log('onProcessDied onProcessDied: ' + JSON.stringify(processData)); 33 }, 34 onProcessStateChanged(processData) { 35 console.log('onProcessStateChanged processData.pid : ' + JSON.stringify(processData.pid)); 36 console.log('onProcessStateChanged processData.bundleName : ' + JSON.stringify(processData.bundleName)); 37 console.log('onProcessStateChanged processData.uid : ' + JSON.stringify(processData.uid)); 38 console.log('onProcessStateChanged processData.isContinuousTask : ' + JSON.stringify(processData.isContinuousTask)); 39 console.log('onProcessStateChanged processData.isKeepAlive : ' + JSON.stringify(processData.isKeepAlive)); 40 } 41}; 42let observerCode = appManager.registerApplicationStateObserver(applicationStateObserver); 43``` 44