harmony 鸿蒙AbilityMonitor

2022-12-22
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AbilityMonitor

The AbilityMonitor module provides monitors for abilities that meet specified conditions. The latest matched abilities are stored in an AbilityMonitor object.

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 AbilityDelegatorRegistry from '@ohos.app.ability.abilityDelegatorRegistry';

Usage

AbilityMonitor can be used as an input parameter of addAbilityMonitor in abilityDelegator to listen for lifecycle changes of an ability.

AbilityMonitor

Describes an ability monitor.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Type	Readable	Writable	Description
abilityName	string	Yes	Yes	Name of the ability bound to the ability monitor.
moduleName?	string	Yes	Yes	Name of the module bound to the ability monitor.
onAbilityCreate?:(data: UIAbility)	function	Yes	Yes	Called when the ability is created. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onAbilityForeground?:(data: UIAbility)	function	Yes	Yes	Called when the ability starts to run in the foreground. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onAbilityBackground?:(data: UIAbility)	function	Yes	Yes	Called when the ability starts to run in the background. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onAbilityDestroy?:(data: UIAbility)	function	Yes	Yes	Called when the ability is destroyed. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onWindowStageCreate?:(data: UIAbility)	function	Yes	Yes	Called when the window stage is created. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onWindowStageRestore?:(data: UIAbility)	function	Yes	Yes	Called when the window stage is restored. If this attribute is not set, the corresponding lifecycle callback cannot be received.
onWindowStageDestroy?:(data: UIAbility)	function	Yes	Yes	Called when the window stage is destroyed. If this attribute is not set, the corresponding lifecycle callback cannot be received.

Example

import AbilityDelegatorRegistry from '@ohos.app.ability.abilityDelegatorRegistry';
import UIAbility from '@ohos.app.ability.UIAbility';
import { BusinessError } from '@ohos.base';

function onAbilityCreateCallback(data: UIAbility) {
    console.info(`onAbilityCreateCallback, data: ${JSON.stringify(data)}`);
}

let monitor: AbilityDelegatorRegistry.AbilityMonitor = {
    abilityName: 'abilityname',
    moduleName: "moduleName",
    onAbilityCreate: onAbilityCreateCallback
}

let abilityDelegator: AbilityDelegatorRegistry.AbilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator();
abilityDelegator.addAbilityMonitor(monitor, (error : BusinessError) => {
    if (error) {
        console.error(`addAbilityMonitor fail, error: ${JSON.stringify(error)}`);
    }
});