harmony 鸿蒙@ohos.app.ability.abilityManager (AbilityManager)
@ohos.app.ability.abilityManager (AbilityManager)
The AbilityManager module provides APIs for obtaining ability information and running status information.
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 { abilityManager } from '@kit.AbilityKit';
AbilityState
Enumerates the ability states. This enum can be used together with AbilityRunningInfo to return the ability state.
System capability: SystemCapability.Ability.AbilityRuntime.Core
Name | Value | Description |
---|---|---|
INITIAL | 0 | The ability is in the initial state. |
FOCUS | 2 | The ability has the focus. |
FOREGROUND | 9 | The ability is in the foreground state. |
BACKGROUND | 10 | The ability is in the background state. |
FOREGROUNDING | 11 | The ability is in the state of being switched to the foreground. |
BACKGROUNDING | 12 | The ability is in the state of being switched to the background. |
abilityManager.getAbilityRunningInfos
getAbilityRunningInfos(): Promise<Array<AbilityRunningInfo>>
Obtains the UIAbility running information. 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<AbilityRunningInfo>> | Promise used to return the API call result and the UIAbility running information. You can perform error handling or custom processing in it. |
Error codes
For details about the error codes, see Ability Error Codes.
ID | Error Message |
---|---|
16000050 | Internal error. |
Example
import { abilityManager } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
try {
abilityManager.getAbilityRunningInfos()
.then((data: abilityManager.AbilityRunningInfo[]) => {
console.log(`getAbilityRunningInfos success, data: ${JSON.stringify(data)}`);
})
.catch((error: BusinessError) => {
console.error(`getAbilityRunningInfos fail, error code: ${JSON.stringify(error.code)}, error msg: ${JSON.stringify(error.message)}`);
})
} catch (e) {
let code = (e as BusinessError).code;
let msg = (e as BusinessError).message;
console.error(`getAbilityRunningInfos fail, error code: ${JSON.stringify(code)}, error msg: ${JSON.stringify(msg)}`);
}
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