harmony(鸿蒙)appManager

  • 2022-08-09
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appManager

The appManager module implements application management. You can use the APIs of this module to query whether the application is undergoing a stability test, whether the application is running on a RAM constrained device, the memory size of the application, and information about the running process.

NOTE

The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import app from '@ohos.application.appManager';

appManager.isRunningInStabilityTest8+

static isRunningInStabilityTest(callback: AsyncCallback<boolean>): void

Checks whether this application is undergoing a stability test. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<boolean> No Callback used to return the result. If the application is undergoing a stability test, true will be returned; otherwise, false will be returned.

Example

  import app from '@ohos.application.appManager';
  app.isRunningInStabilityTest((err, flag) => {
      console.log('startAbility result:' + JSON.stringify(err));
  })

appManager.isRunningInStabilityTest8+

static isRunningInStabilityTest(): Promise<boolean>

Checks whether this application is undergoing a stability test. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type Description
Promise<boolean> Promise used to return the result. If the application is undergoing a stability test, true will be returned; otherwise, false will be returned.

Example

  import app from '@ohos.application.appManager';
  app.isRunningInStabilityTest().then((flag) => {
      console.log('success:' + JSON.stringify(flag));
  }).catch((error) => {
      console.log('failed:' + JSON.stringify(error));
  });

appManager.isRamConstrainedDevice

isRamConstrainedDevice(): Promise<boolean>;

Checks whether this application is running on a RAM constrained device. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type Description
Promise&lt;boolean&gt; Promise used to return whether the application is running on a RAM constrained device. If the application is running on a RAM constrained device, true will be returned; otherwise, false will be returned.

Example

        app.isRamConstrainedDevice().then((data) => {
            console.log('success:' + JSON.stringify(data));
        }).catch((error) => {
            console.log('failed:' + JSON.stringify(error));
        });

appManager.isRamConstrainedDevice

isRamConstrainedDevice(callback: AsyncCallback<boolean>): void;

Checks whether this application is running on a RAM constrained device. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback&lt;boolean&gt; No Callback used to return whether the application is running on a RAM constrained device. If the application is running on a RAM constrained device, true will be returned; otherwise, false will be returned.

Example

        app.isRamConstrainedDevice((err, data) => {
            console.log('startAbility result failed:' + JSON.stringify(err));
            console.log('startAbility result success:' + JSON.stringify(data));
        })

appManager.getAppMemorySize

getAppMemorySize(): Promise<number>;

Obtains the memory size of this application. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type Description
Promise&lt;number&gt; Size of the application memory.

Example

        app.getAppMemorySize().then((data) => {
            console.log('success:' + JSON.stringify(data));
        }).catch((error) => {
            console.log('failed:' + JSON.stringify(error));
        });

appManager.getAppMemorySize

getAppMemorySize(callback: AsyncCallback<number>): void;

Obtains the memory size of this application. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback&lt;number&gt; No Size of the application memory.

Example

        app.getAppMemorySize((err, data) => {
            console.log('startAbility result failed :' + JSON.stringify(err));
            console.log('startAbility result success:' + JSON.stringify(data));
        })

appManager.getProcessRunningInfos(deprecated)

getProcessRunningInfos(): Promise<Array<ProcessRunningInfo>>;

Obtains information about the running processes. This API uses a promise to return the result.

This API is deprecated since API version 9. You are advised to use appManager.getProcessRunningInformation9+ instead.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type Description
Promise<Array<ProcessRunningInfo>> Promise used to return the process information.

Example

        app.getProcessRunningInfos().then((data) => {
            console.log('success:' + JSON.stringify(data));
        }).catch((error) => {
            console.log('failed:' + JSON.stringify(error));
        });

appManager.getProcessRunningInfos(deprecated)

getProcessRunningInfos(callback: AsyncCallback<Array<ProcessRunningInfo>>): void;

Obtains information about the running processes. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use appManager.getProcessRunningInformation9+ instead.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<Array<ProcessRunningInfo>> No Callback used to return the process information.

Example

        app.getProcessRunningInfos((err, data) => {
            console.log('startAbility result failed :' + JSON.stringify(err));
            console.log('startAbility result success:' + JSON.stringify(data));
        })

appManager.getProcessRunningInformation9+

getProcessRunningInformation(): Promise<Array<ProcessRunningInformation>>;

Obtains information about the running processes. This API uses a promise to return the result.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type Description
Promise<Array<ProcessRunningInformation>> Promise used to return the process information.

Example

        app.getProcessRunningInformation().then((data) => {
            console.log('success:' + JSON.stringify(data));
        }).catch((error) => {
            console.log('failed:' + JSON.stringify(error));
        });

appManager.getProcessRunningInformation9+

getProcessRunningInformation(callback: AsyncCallback<Array<ProcessRunningInformation>>): void;

Obtains information about the running processes. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<Array<ProcessRunningInformation>> No Callback used to return the process information.

Example

        app.getProcessRunningInformation((err, data) => {
            console.log('startAbility result failed :' + JSON.stringify(err));
            console.log('startAbility result success:' + JSON.stringify(data));
        })

appManager.registerApplicationStateObserver8+

registerApplicationStateObserver(observer: ApplicationStateObserver): number;

Registers an observer to listen for the state changes of all applications.

Required permissions: ohos.permission.RUNNING_STATE_OBSERVER

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
observer ApplicationStateObserver No Numeric code of the observer.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

appManager.registerApplicationStateObserver9+

registerApplicationStateObserver(observer: ApplicationStateObserver, bundleNameList: Array<string>): number;

Registers an observer to listen for the state changes of a specified application.

Required permissions: ohos.permission.RUNNING_STATE_OBSERVER

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
observer ApplicationStateObserver No Numeric code of the observer.
bundleNameList Array No bundleName array of the application. A maximum of 128 bundle names can be passed.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  var bundleNameList = ['bundleName1', 'bundleName2'];
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver, bundleNameList);
  console.log('-------- observerCode: ---------', observerCode);

appManager.unregisterApplicationStateObserver8+

unregisterApplicationStateObserver(observerId: number, callback: AsyncCallback<void>): void;

Deregisters the application state observer. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.RUNNING_STATE_OBSERVER

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
observerId number No Numeric code of the observer.
callback AsyncCallback<void> No Callback used to return the result.

Example

    var observerId = 100;

    function unregisterApplicationStateObserverCallback(err) {
      if (err) {
          console.log('------------ unregisterApplicationStateObserverCallback ------------', err);
      }
    }
    app.unregisterApplicationStateObserver(observerId, unregisterApplicationStateObserverCallback);

appManager.unregisterApplicationStateObserver8+

unregisterApplicationStateObserver(observerId: number): Promise<void>;

Deregisters the application state observer. This API uses a promise to return the result.

Required permissions: ohos.permission.RUNNING_STATE_OBSERVER

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
observerId number No Numeric code of the observer.

Return value

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

Example

    var observerId = 100;

    app.unregisterApplicationStateObserver(observerId)
   .then((data) => {
       console.log('----------- unregisterApplicationStateObserver success ----------', data);
   })
   .catch((err) => {
       console.log('----------- unregisterApplicationStateObserver fail ----------', err);
   })

appManager.getForegroundApplications8+

getForegroundApplications(callback: AsyncCallback<Array<AppStateData>>): void;

Obtains applications that are running in the foreground. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
callback AsyncCallback<Array<AppStateData>> No Callback used to return the application state data.

Example

    function getForegroundApplicationsCallback(err, data) {
      if (err) {
          console.log('--------- getForegroundApplicationsCallback fail ---------', err);
      } else {
          console.log('--------- getForegroundApplicationsCallback success ---------', data)
      }
    }
    app.getForegroundApplications(getForegroundApplicationsCallback);

appManager.getForegroundApplications8+

getForegroundApplications(): Promise<Array<AppStateData>>;

Obtains applications that are running in the foreground. This API uses a promise to return the result.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Return value

Type Description
Promise<Array<ProcessRunningInfo>> Promise used to return the application state data.

Example

    app.getForegroundApplications()
    .then((data) => {
        console.log('--------- getForegroundApplications success -------', data);
    })
    .catch((err) => {
        console.log('--------- getForegroundApplications fail -------', err);
    })

appManager.killProcessWithAccount8+

killProcessWithAccount(bundleName: string, accountId: number): Promise<void>

Kills a process by bundle name and account ID. This API uses a promise to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS and ohos.permission.CLEAN_BACKGROUND_PROCESSES

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
bundleName string Yes Bundle name of an application.
accountId number Yes ID of a system account. For details, see getCreatedOsAccountsCount.

Example

var bundleName = 'bundleName';
var accountId = 0;
app.killProcessWithAccount(bundleName, accountId)
   .then((data) => {
       console.log('------------ killProcessWithAccount success ------------', data);
   })
   .catch((err) => {
       console.log('------------ killProcessWithAccount fail ------------', err);
   })

appManager.killProcessWithAccount8+

killProcessWithAccount(bundleName: string, accountId: number, callback: AsyncCallback<void>): void

Kills a process by bundle name and account ID. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS and ohos.permission.CLEAN_BACKGROUND_PROCESSES

Parameters

Name Type Mandatory Description
bundleName string Yes Bundle name of an application.
accountId number Yes ID of a system account. For details, see getCreatedOsAccountsCount.
callback AsyncCallback<void> Yes Callback used to return the result.

Example

var bundleName = 'bundleName';
var accountId = 0;
function killProcessWithAccountCallback(err, data) {
   if (err) {
       console.log('------------- killProcessWithAccountCallback fail, err: --------------', err);
   } else {
       console.log('------------- killProcessWithAccountCallback success, data: --------------', data);
   }
}
app.killProcessWithAccount(bundleName, accountId, killProcessWithAccountCallback);

appManager.killProcessesByBundleName8+

killProcessesByBundleName(bundleName: string, callback: AsyncCallback<void>);

Kills a process by bundle name. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.CLEAN_BACKGROUND_PROCESSES

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
bundleName string No Bundle name of an application.
callback AsyncCallback<void> No Callback used to return the result.

Example

    var bundleName = 'bundleName';
    function killProcessesByBundleNameCallback(err, data) {
      if (err) {
          console.log('------------- killProcessesByBundleNameCallback fail, err: --------------', err);
      } else {
          console.log('------------- killProcessesByBundleNameCallback success, data: --------------', data);
      }
    }
    app.killProcessesByBundleName(bundleName, killProcessesByBundleNameCallback);

appManager.killProcessesByBundleName8+

killProcessesByBundleName(bundleName: string): Promise<void>;

Kills a process by bundle name. This API uses a promise to return the result.

Required permissions: ohos.permission.CLEAN_BACKGROUND_PROCESSES

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
bundleName string No Bundle name of an application.

Return value

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

Example

var bundleName = 'bundleName';
app.killProcessesByBundleName(bundleName)
   .then((data) => {
       console.log('------------ killProcessesByBundleName success ------------', data);
   })
   .catch((err) => {
       console.log('------------ killProcessesByBundleName fail ------------', err);
   })

appManager.clearUpApplicationData8+

clearUpApplicationData(bundleName: string, callback: AsyncCallback<void>);

Clears application data by bundle name. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.CLEAN_APPLICATION_DATA

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
bundleName string No Bundle name of an application.
callback AsyncCallback<void> No Callback used to return the result.

Example

    var bundleName = 'bundleName';
    function clearUpApplicationDataCallback(err, data) {
      if (err) {
          console.log('------------- clearUpApplicationDataCallback fail, err: --------------', err);
      } else {
          console.log('------------- clearUpApplicationDataCallback success, data: --------------', data);
      }
    }
    app.clearUpApplicationData(bundleName, clearUpApplicationDataCallback);

appManager.clearUpApplicationData8+

clearUpApplicationData(bundleName: string): Promise<void>;

Clears application data by bundle name. This API uses a promise to return the result.

Required permissions: ohos.permission.CLEAN_APPLICATION_DATA

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
bundleName string No Bundle name of an application.

Return value

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

Example

  var bundleName = 'bundleName';
  app.clearUpApplicationData(bundleName)
    .then((data) => {
        console.log('------------ clearUpApplicationData success ------------', data);
    })
    .catch((err) => {
        console.log('------------ clearUpApplicationData fail ------------', err);
    })

ApplicationStateObserver.onForegroundApplicationChanged8+

onForegroundApplicationChanged(appStateData: AppStateData): void;

Called when the application state changes.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
appStateData AppStateData No Information about the application whose state is changed.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

ApplicationStateObserver.onAbilityStateChanged8+

onAbilityStateChanged(abilityStateData: AbilityStateData): void;

Called when the ability state changes.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
abilityStateData AbilityStateData No Information about the ability whose state is changed.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

ApplicationStateObserver.onProcessCreated8+

onProcessCreated(processData: ProcessData): void;

Called when a process is created.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
processData ProcessData No Process information.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

ApplicationStateObserver.onProcessDied8+

onProcessDied(processData: ProcessData): void;

Called when a process is terminated.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
processData ProcessData No Process information.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

ApplicationStateObserver.onProcessStateChanged9+

onProcessStateChanged(processData: ProcessData): void;

Called when the process state changes.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Name Type Mandatory Description
processData ProcessData No Process information.

Example

  var applicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
    },
    onProcessCreated(processData) {
        console.log('------------ onProcessCreated -----------', processData);
    },
    onProcessDied(processData) {
        console.log('------------ onProcessDied -----------', processData);
    },
    onProcessStateChanged(processData) {
        console.log('------------ onProcessStateChanged -----------', processData);
    }
  }
  const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
  console.log('-------- observerCode: ---------', observerCode);

AppStateData

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Readable/Writable Type Mandatory Description
bundleName8+ Read only string No Bundle name of an application.
uid8+ Read only number No User ID.
state8+ Read only number No Application state.

AbilityStateData

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Type Readable Writable Description
pid8+ number Yes No Process ID.
bundleName8+ string Yes No Bundle name of an application.
abilityName8+ string Yes No Ability name.
uid8+ number Yes No User ID.
state8+ number Yes No Ability state.
moduleName9+ string Yes No Name of the HAP file to which the ability belongs.
abilityType8+ string Yes No Ability type.

ProcessData

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Type Readable Writable Description
pid8+ number Yes No Process ID.
bundleName8+ string Yes No Bundle name of an application.
uid8+ number Yes No User ID.
isContinuousTask9+ boolean Yes No Whether the process is a continuous task.
isKeepAlive9+ boolean Yes No Whether the process remains active.

ProcessRunningInfo

System capability: SystemCapability.Ability.AbilityRuntime.Mission

Name Readable/Writable Type Mandatory Description
pid8+ Read only number No Process ID.
uid8+ Read only number No User ID.
processName8+ Read only string No Process name.
bundleNames8+ Read only Array<string> No bundleName array in the running processes.

ApplicationStateObserver

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Type Readable Writable Description
onForegroundApplicationChanged8+ AsyncCallback<void> Yes No Callback invoked when the foreground or background state of an application changes.
onAbilityStateChanged8+ AsyncCallback<void> Yes No Callback invoked when the ability state changes.
onProcessCreated8+ AsyncCallback<void> Yes No Callback invoked when a process is created.
onProcessDied8+ AsyncCallback<void> Yes No Callback invoked when a process is destroyed.

ProcessRunningInformation

Defines the process running information.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name Readable/Writable Type Mandatory Description
pid9+ Read only number No Process ID.
uid9+ Read only number No User ID.
processName9+ Read only string No Process name.
bundleNames9+ Read only Array<string> No bundleName array in the running processes.

ApplicationState9+

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Value Description
STATE_CREATE 1 State indicating that the application is being created.
STATE_FOREGROUND 2 State indicating that the application is running in the foreground.
STATE_ACTIVE 3 State indicating that the application is active.
STATE_BACKGROUND 4 State indicating that the application is running in the background.
STATE_DESTROY 5 State indicating that the application is destroyed.

ProcessState9+

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Name Value Description
STATE_CREATE 1 State indicating that the process is being created.
STATE_FOREGROUND 2 State indicating that the process is running in the foreground.
STATE_ACTIVE 3 State indicating that the process is active.
STATE_BACKGROUND 4 State indicating that the process is running in the background.
STATE_DESTROY 5 State indicating that the process is destroyed.

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