@ohos.app.ability.appManager (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 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

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

appManager.isRunningInStabilityTest

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

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

appManager.isRunningInStabilityTest((err, flag) => {
    if (err) {
        console.error(`isRunningInStabilityTest fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log(`The result of isRunningInStabilityTest is: ${JSON.stringify(flag)}`);
    }
});  

appManager.isRunningInStabilityTest

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

appManager.isRunningInStabilityTest().then((flag) => {
    console.log(`The result of isRunningInStabilityTest is: ${JSON.stringify(flag)}`);
}).catch((error: BusinessError) => {
    console.error(`error: ${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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

appManager.isRamConstrainedDevice().then((data) => {
    console.log(`The result of isRamConstrainedDevice is: ${JSON.stringify(data)}`);
}).catch((error: BusinessError) => {
    console.error(`error: ${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

Error codes

For details about the error codes, see Ability Error Codes.

Example

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

appManager.isRamConstrainedDevice((err, data) => {
    if (err) {
        console.error(`isRamConstrainedDevice fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log(`The result of isRamConstrainedDevice is: ${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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError} from '@ohos.base'

appManager.getAppMemorySize().then((data) => {
    console.log(`The size of app memory is: ${JSON.stringify(data)}`);
}).catch((error: BusinessError) => {
    console.error(`error: ${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

Error codes

For details about the error codes, see Ability Error Codes.

Example

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

appManager.getAppMemorySize((err, data) => {
    if (err) {
        console.error(`getAppMemorySize fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log(`The size of app memory is: ${JSON.stringify(data)}`);
    }
});

appManager.getRunningProcessInformation

getRunningProcessInformation(): Promise<Array<ProcessInformation>>

Obtains information about the running processes. This API uses a promise to return the result. If you have requested the ohos.permission.GET_RUNNING_INFO permission, you can obtain information about all running processes; otherwise, you can obtain only information about the current running processes.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

appManager.getRunningProcessInformation().then((data) => {
    console.log(`The running process information is: ${JSON.stringify(data)}`);
}).catch((error: BusinessError) => {
    console.error(`error: ${JSON.stringify(error)}`);
});

appManager.getRunningProcessInformation

getRunningProcessInformation(callback: AsyncCallback<Array<ProcessInformation>>): void

Obtains information about the running processes. This API uses an asynchronous callback to return the result. If you have requested the ohos.permission.GET_RUNNING_INFO permission, you can obtain information about all running processes; otherwise, you can obtain only information about the current running processes.

Required permissions: ohos.permission.GET_RUNNING_INFO

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Error codes

For details about the error codes, see Ability Error Codes.

Example

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

appManager.getRunningProcessInformation((err, data) => {
    if (err) {
        console.error(`getRunningProcessInformation fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log(`The process running information is: ${JSON.stringify(data)}`);
    }
});

appManager.isSharedBundleRunning¹⁰⁺

isSharedBundleRunning(bundleName: string, versionCode: number): Promise<boolean>

Checks whether the shared library is in use. 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.

Parameters

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

const bundleName = "this is a bundleName";
const versionCode = 1;
appManager.isSharedBundleRunning(bundleName, versionCode).then((data) => {
    console.log(`The shared bundle running is: ${JSON.stringify(data)}`);
}).catch((error: BusinessError) => {
    console.error(`error: ${JSON.stringify(error)}`);
});

appManager.isSharedBundleRunning¹⁰⁺

isSharedBundleRunning(bundleName: string, versionCode: number, callback: AsyncCallback<boolean>): void

Checks whether the shared library is in use. 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.

Parameters

Error codes

For details about the error codes, see Ability Error Codes.

Example

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

const bundleName = "this is a bundleName";
const versionCode = 1;
appManager.isSharedBundleRunning(bundleName, versionCode, (err, data) => {
    if (err) {
        console.error(`err: ${JSON.stringify(err)}`);
    } else {
        console.log(`The shared bundle running is: ${JSON.stringify(data)}`);
    }
});

appManager.on

on(type: 'applicationState', 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

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let applicationStateObserver: appManager.ApplicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log(`[appManager] onAbilityStateChanged: ${JSON.stringify(abilityStateData)}`);
    },
    onProcessCreated(processData) {
        console.log(`[appManager] onProcessCreated: ${JSON.stringify(processData)}`);
    },
    onProcessDied(processData) {
        console.log(`[appManager] onProcessDied: ${JSON.stringify(processData)}`);
    },
    onProcessStateChanged(processData) {
        console.log(`[appManager] onProcessStateChanged: ${JSON.stringify(processData)}`);
    }
};
try {
    const observerId = appManager.on('applicationState', applicationStateObserver);
    console.log(`[appManager] observerCode: ${observerId}`);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.on

on(type: 'applicationState', 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

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let applicationStateObserver: appManager.ApplicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log(`[appManager] onAbilityStateChanged: ${JSON.stringify(abilityStateData)}`);
    },
    onProcessCreated(processData) {
        console.log(`[appManager] onProcessCreated: ${JSON.stringify(processData)}`);
    },
    onProcessDied(processData) {
        console.log(`[appManager] onProcessDied: ${JSON.stringify(processData)}`);
    },
    onProcessStateChanged(processData) {
        console.log(`[appManager] onProcessStateChanged: ${JSON.stringify(processData)}`);
    }
};
let bundleNameList = ['bundleName1', 'bundleName2'];
try {
    const observerId = appManager.on('applicationState', applicationStateObserver, bundleNameList);
    console.log(`[appManager] observerCode: ${observerId}`);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.off

off(type: 'applicationState', 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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let observerId = 0;

// 1. Register an application state observer.
let applicationStateObserver: appManager.ApplicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log(`[appManager] onAbilityStateChanged: ${JSON.stringify(abilityStateData)}`);
    },
    onProcessCreated(processData) {
        console.log(`[appManager] onProcessCreated: ${JSON.stringify(processData)}`);
    },
    onProcessDied(processData) {
        console.log(`[appManager] onProcessDied: ${JSON.stringify(processData)}`);
    },
    onProcessStateChanged(processData) {
        console.log(`[appManager] onProcessStateChanged: ${JSON.stringify(processData)}`);
    }
};
let bundleNameList = ['bundleName1', 'bundleName2'];
try {
    observerId = appManager.on('applicationState', applicationStateObserver, bundleNameList);
    console.log(`[appManager] observerCode: ${observerId}`);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

// 2. Deregister the application state observer.
function unregisterApplicationStateObserverCallback(err: BusinessError) {
    if (err) {
        console.error(`unregisterApplicationStateObserverCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('unregisterApplicationStateObserverCallback success.');
    }
}
try {
    appManager.off('applicationState', observerId, unregisterApplicationStateObserverCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.off

off(type: 'applicationState', observerId: number): Promise<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

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let observerId = 0;

// 1. Register an application state observer.
let applicationStateObserver: appManager.ApplicationStateObserver = {
    onForegroundApplicationChanged(appStateData) {
        console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
    },
    onAbilityStateChanged(abilityStateData) {
        console.log(`[appManager] onAbilityStateChanged: ${JSON.stringify(abilityStateData)}`);
    },
    onProcessCreated(processData) {
        console.log(`[appManager] onProcessCreated: ${JSON.stringify(processData)}`);
    },
    onProcessDied(processData) {
        console.log(`[appManager] onProcessDied: ${JSON.stringify(processData)}`);
    },
    onProcessStateChanged(processData) {
        console.log(`[appManager] onProcessStateChanged: ${JSON.stringify(processData)}`);
    }
};
let bundleNameList = ['bundleName1', 'bundleName2'];
try {
    observerId = appManager.on('applicationState', applicationStateObserver, bundleNameList);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}
    
// 2. Deregister the application state observer.
try {
    appManager.off('applicationState', observerId).then((data) => {
        console.log(`unregisterApplicationStateObserver success, data: ${JSON.stringify(data)}`);
    }).catch((err: BusinessError) => {
        console.error(`unregisterApplicationStateObserver fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getForegroundApplications

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

Obtains applications that are running in the foreground. This API uses an asynchronous callback to return the result. The application information is defined by AppStateData.

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

function getForegroundApplicationsCallback(err: BusinessError, data: Array<appManager.AppStateData>) {
    if (err) {
        console.error(`getForegroundApplicationsCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log(`getForegroundApplicationsCallback success, data: ${JSON.stringify(data)}`);
    }
}
try {
    appManager.getForegroundApplications(getForegroundApplicationsCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getForegroundApplications

getForegroundApplications(): Promise<Array<AppStateData>>

Obtains applications that are running in the foreground. This API uses a promise to return the result. The application information is defined by AppStateData.

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

appManager.getForegroundApplications().then((data) => {
    console.log(`getForegroundApplications success, data: ${JSON.stringify(data)}`);
}).catch((err: BusinessError) => {
    console.error(`getForegroundApplications fail, err: ${JSON.stringify(err)}`);
});

appManager.killProcessWithAccount

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.

NOTE

The ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS permission is not required when accountId specifies the current user.

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
let accountId = 0;
try {
    appManager.killProcessWithAccount(bundleName, accountId).then(() => {
        console.log('killProcessWithAccount success');
    }).catch((err: BusinessError) => {
        console.error(`killProcessWithAccount fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.killProcessWithAccount

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.

NOTE

The ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS permission is not required when accountId specifies the current user.

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
let accountId = 0;
function killProcessWithAccountCallback(err: BusinessError) {
    if (err) {
        console.error(`killProcessWithAccountCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('killProcessWithAccountCallback success.');
    }
}
appManager.killProcessWithAccount(bundleName, accountId, killProcessWithAccountCallback);

appManager.killProcessesByBundleName

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
function killProcessesByBundleNameCallback(err: BusinessError) {
    if (err) {
        console.error(`killProcessesByBundleNameCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('killProcessesByBundleNameCallback success.');
    }
}
try {
    appManager.killProcessesByBundleName(bundleName, killProcessesByBundleNameCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.killProcessesByBundleName

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

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
try {
    appManager.killProcessesByBundleName(bundleName).then((data) => {
        console.log('killProcessesByBundleName success.');
    }).catch((err: BusinessError) => {
        console.error(`killProcessesByBundleName fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.clearUpApplicationData

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

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
function clearUpApplicationDataCallback(err: BusinessError) {
    if (err) {
        console.error(`clearUpApplicationDataCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('clearUpApplicationDataCallback success.');
    }
}
try {
    appManager.clearUpApplicationData(bundleName, clearUpApplicationDataCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.clearUpApplicationData

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

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = 'bundleName';
try {
    appManager.clearUpApplicationData(bundleName).then((data) => {
        console.log('clearUpApplicationData success.');
    }).catch((err: BusinessError) => {
        console.error(`clearUpApplicationData fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getProcessMemoryByPid¹⁰⁺

getProcessMemoryByPid(pid: number, callback: AsyncCallback<number>): void

Obtains the memory size of a process. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let pid = 0;
function getProcessMemoryByPidCallback(err: BusinessError, data: number) {
    if (err) {
        console.error(`getProcessMemoryByPidCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('getProcessMemoryByPidCallback success.');
    }
}
try {
    appManager.getProcessMemoryByPid(pid, getProcessMemoryByPidCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getProcessMemoryByPid¹⁰⁺

getProcessMemoryByPid(pid: number): Promise<number>

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

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let pid = 0;
try {
    appManager.getProcessMemoryByPid(pid).then((data) => {
        console.log('getProcessMemoryByPid success.');
    }).catch((err: BusinessError) => {
        console.error(`getProcessMemoryByPid fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getRunningProcessInfoByBundleName¹⁰⁺

getRunningProcessInfoByBundleName(bundleName: string, callback: AsyncCallback<Array<ProcessInformation>>): void

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

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = "bundleName";
function getRunningProcessInfoByBundleNameCallback(err: BusinessError, data: Array<appManager.ProcessInformation>) {
    if (err) {
        console.error(`getRunningProcessInfoByBundleNameCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('getRunningProcessInfoByBundleNameCallback success.');
    }
}
try {
    appManager.getRunningProcessInfoByBundleName(bundleName, getRunningProcessInfoByBundleNameCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getRunningProcessInfoByBundleName¹⁰⁺

getRunningProcessInfoByBundleName(bundleName: string): Promise<Array<ProcessInformation>>

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

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = "bundleName";
try {
    appManager.getRunningProcessInfoByBundleName(bundleName).then((data) => {
        console.log('getRunningProcessInfoByBundleName success.');
    }).catch((err: BusinessError) => {
        console.error(`getRunningProcessInfoByBundleName fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getRunningProcessInfoByBundleName¹⁰⁺

getRunningProcessInfoByBundleName(bundleName: string, userId: number, callback: AsyncCallback<Array<ProcessInformation>>): void

Obtains information about the running processes by bundle name and user ID. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = "bundleName";
let userId = 0;
function getRunningProcessInfoByBundleNameCallback(err: BusinessError, data: Array<appManager.ProcessInformation>) {
    if (err) {
        console.error(`getRunningProcessInfoByBundleNameCallback fail, err: ${JSON.stringify(err)}`);
    } else {
        console.log('getRunningProcessInfoByBundleNameCallback success.');
    }
}
try {
    appManager.getRunningProcessInfoByBundleName(bundleName, userId, getRunningProcessInfoByBundleNameCallback);
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

appManager.getRunningProcessInfoByBundleName¹⁰⁺

getRunningProcessInfoByBundleName(bundleName: string, userId: number): Promise<Array<ProcessInformation>>

Obtains information about the running processes by bundle name and user ID. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Return value

Error codes

For details about the error codes, see Ability Error Codes.

Example

import appManager from '@ohos.app.ability.appManager';
import { BusinessError } from '@ohos.base';

let bundleName = "bundleName";
let userId = 0;
try {
    appManager.getRunningProcessInfoByBundleName(bundleName, userId).then((data) => {
        console.log('getRunningProcessInfoByBundleName success.');
    }).catch((err: BusinessError) => {
        console.error(`getRunningProcessInfoByBundleName fail, err: ${JSON.stringify(err)}`);
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`[appManager] error: ${code}, ${message} `);
}

ApplicationState

Enumerates the application states. This enum can be used together with AbilityStateData to return the application state.

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

ProcessState¹⁰⁺

Enumerates the process states. This enum can be used together with ProcessData to return the process state.

System capability: SystemCapability.Ability.AbilityRuntime.Core