# @ohos.app.ability.missionManager (missionManager)

missionManager模块提供系统任务管理能力，包括对系统任务执行锁定、解锁、清理、切换到前台等操作。

> **说明：**
>
> 本模块首批接口从API version 9开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。

## 导入模块

```ts
import missionManager from '@ohos.app.ability.missionManager';
```

## 权限列表

ohos.permission.MANAGE_MISSIONS

## missionManager.on(type:'mission', listener: MissionListener)<sup>(deprecated)</sup>

on(type:'mission', listener: MissionListener): number;

注册系统任务状态监听器。

> **说明：**
>
> 从 API version 9开始支持，从API version 10开始废弃，推荐使用[missionManager.on(type:'missionEvent', listener: MissionListener)](#missionmanagerontypemissionevent-listener-missionlistener10)。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | type | string | 是 | 调用接口类型，固定填'mission'字符串。 |
  | listener | [MissionListener](js-apis-inner-application-missionListener.md) | 是 | 系统任务监听器。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | number | 监听器的index值，由系统创建，在注册系统任务状态监听时分配，和监听器一一对应&nbsp;。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';

let listener: missionManager.MissionListener = {
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
};

let listenerId = -1;
let abilityWant: Want;
let context: common.UIAbilityContext;

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
        console.log('[Demo] EntryAbility onCreate');
        abilityWant = want;
        context = this.context;
    }

    onDestroy() {
        try {
            if (listenerId !== -1) {
                missionManager.off('mission', listenerId).catch((err: BusinessError) => {
                    console.log(err);
                });
            }
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
        console.log('[Demo] EntryAbility onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
        // Main window is created, set main page for this ability
        console.log('[Demo] EntryAbility onWindowStageCreate');
        try {
            listenerId = missionManager.on('mission', listener);
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }

        windowStage.loadContent('pages/index', (err, data) => {
            if (err.code) {
                console.error(`Failed to load the content. Cause: ${JSON.stringify(err)}`);
                return;
            }
            console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
        });
    }
};
```

## missionManager.off(type: 'mission', listenerId: number, callback: AsyncCallback&lt;void&gt;)<sup>(deprecated)</sup>

off(type: 'mission', listenerId: number, callback: AsyncCallback&lt;void&gt;): void;

解注册任务状态监听器。

> **说明：**
>
> 从 API version 9开始支持，从API version 10开始废弃，推荐使用[missionManager.off(type: 'missionEvent', listenerId: number)](#missionmanagerofftype-missionevent-listenerid-number10)。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | type | string | 是 | 调用接口类型，固定填'mission'字符串。 |
  | listenerId | number | 是 | 系统任务状态监器法的index值，和监听器一一对应，由on方法返回。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300002 | Input error. The specified mission listener does not exist. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';

let listener: missionManager.MissionListener = {
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
};

let listenerId = -1;
let abilityWant: Want;
let context: common.UIAbilityContext;

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
        console.log('[Demo] EntryAbility onCreate');
        abilityWant = want;
        context = this.context;
    }

    onDestroy() {
        try {
            if (listenerId !== -1) {
                missionManager.off('mission', listenerId, (err) => {
                    console.log('$(err.code)');
                });
            }
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
        console.log('[Demo] EntryAbility onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
        // Main window is created, set main page for this ability
        console.log('[Demo] EntryAbility onWindowStageCreate');
        try {
            listenerId = missionManager.on('mission', listener);
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }

        windowStage.loadContent('pages/index', (err: BusinessError, data) => {
            if (err.code) {
                console.error(`Failed to load the content. Cause: ${JSON.stringify(err)}`);
                return;
            }
            console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
        });
    }
};
```

## missionManager.off(type: 'mission', listenerId: number)<sup>(deprecated)</sup>

off(type: 'mission', listenerId: number): Promise&lt;void&gt;;

解注册任务状态监听，以promise方式返回执行结果。

> **说明：**
>
> 从 API version 9开始支持，从API version 10开始废弃，推荐使用[missionManager.off(type: 'missionEvent', listenerId: number)](#missionmanagerofftype-missionevent-listenerid-number10)。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | type | string | 是 | 调用接口类型，固定填'mission'字符串。 |
  | listenerId | number | 是 | 系统任务状态监听器的index值，和监听器一一对应，由on方法返回。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300002 | Input error. The specified mission listener does not exist. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';

let listener: missionManager.MissionListener = {
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
};

let listenerId = -1;
let abilityWant: Want;
let context: common.UIAbilityContext;

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
        console.log('[Demo] EntryAbility onCreate');
        abilityWant = want;
        context = this.context;
    }

    onDestroy() {
        try {
            if (listenerId !== -1) {
                missionManager.off('mission', listenerId).catch((err: BusinessError) => {
                    console.log('$(err.code)');
                });
            }
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
        console.log('[Demo] EntryAbility onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
        // Main window is created, set main page for this ability
        console.log('[Demo] EntryAbility onWindowStageCreate');
        try {
            listenerId = missionManager.on('mission', listener);
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }

        windowStage.loadContent('pages/index', (err: BusinessError, data) => {
            if (err.code) {
                console.error(`Failed to load the content. Cause: ${JSON.stringify(err)}`);
                return;
            }
            console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
        });
    }
};
```

## missionManager.on(type:'missionEvent', listener: MissionListener)<sup>10+</sup>

on(type:'missionEvent', listener: MissionListener): number;

注册系统任务状态监听器。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | type | string | 是 | 调用接口类型，固定填'missionEvent'字符串。 |
  | listener | [MissionListener](js-apis-inner-application-missionListener.md) | 是 | 系统任务监听器。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | number | 监听器的index值，由系统创建，在注册系统任务状态监听时分配，和监听器一一对应&nbsp;。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';

let listener: missionManager.MissionListener = {
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
};

let listenerId = -1;
let abilityWant: Want;
let context: common.UIAbilityContext;

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
        console.log('[Demo] EntryAbility onCreate');
        abilityWant = want;
        context = this.context;
    }

    onDestroy() {
        try {
            if (listenerId !== -1) {
                missionManager.off('missionEvent', listenerId);
            }
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
        console.log('[Demo] EntryAbility onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
        // Main window is created, set main page for this ability
        console.log('[Demo] EntryAbility onWindowStageCreate');
        try {
            listenerId = missionManager.on('missionEvent', listener);
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }

        windowStage.loadContent('pages/index', (err, data) => {
            if (err.code) {
                console.error(`Failed to load the content. Cause: ${JSON.stringify(err)}`);
                return;
            }
            console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
        });
    }
};
```

## missionManager.off(type: 'missionEvent', listenerId: number)<sup>10+</sup>

off(type: 'missionEvent', listenerId: number): void;

解注册任务状态监听器。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | type | string | 是 | 调用接口类型，固定填'missionEvent'字符串。 |
  | listenerId | number | 是 | 系统任务状态监器法的index值，和监听器一一对应，由on方法返回。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300002 | Input error. The specified mission listener does not exist. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';

let listener: missionManager.MissionListener = {
    onMissionCreated: (mission) => {console.log('--------onMissionCreated-------');},
    onMissionDestroyed: (mission) => {console.log('--------onMissionDestroyed-------');},
    onMissionSnapshotChanged: (mission) => {console.log('--------onMissionSnapshotChanged-------');},
    onMissionMovedToFront: (mission) => {console.log('--------onMissionMovedToFront-------');},
    onMissionIconUpdated: (mission, icon) => {console.log('--------onMissionIconUpdated-------');},
    onMissionClosed: (mission) => {console.log('--------onMissionClosed-------');},
    onMissionLabelUpdated: (mission) => {console.log('--------onMissionLabelUpdated-------');}
};

let listenerId = -1;
let abilityWant: Want;
let context: common.UIAbilityContext;

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
        console.log('[Demo] EntryAbility onCreate');
        abilityWant = want;
        context = this.context;
    }

    onDestroy() {
        try {
            if (listenerId !== -1) {
                missionManager.off('missionEvent', listenerId);
            }
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
        console.log('[Demo] EntryAbility onDestroy');
    }

    onWindowStageCreate(windowStage: window.WindowStage) {
        // Main window is created, set main page for this ability
        console.log('[Demo] EntryAbility onWindowStageCreate');
        try {
            listenerId = missionManager.on('missionEvent', listener);
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }

        windowStage.loadContent('pages/index', (err, data) => {
            if (err.code) {
                console.error(`Failed to load the content. Cause: ${JSON.stringify(err)}`);
                return;
            }
            console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
        });
    }
};
```

## missionManager.getMissionInfo

getMissionInfo(deviceId: string, missionId: number, callback: AsyncCallback&lt;MissionInfo&gt;): void;

获取任务信息，以异步回调的方式返回任务信息。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;[MissionInfo](./js-apis-inner-application-missionInfo.md)&gt; | 是 | 执行结果回调函数，返回任务信息。 |

**示例：**

  ```ts
    import missionManager from '@ohos.app.ability.missionManager';
    import { BusinessError } from '@ohos.base';

    let testMissionId = 1;

    missionManager.getMissionInfos('',10)
    .then((allMissions) => {
        try {
        if (allMissions && allMissions.length > 0) {
            testMissionId = allMissions[0].missionId;
        }

        missionManager.getMissionInfo('', testMissionId, (error, mission) => {
            if (error) {
            console.error('getMissionInfo failed, error.code: ${error.code}, error.message: ${error.message}');
            } else {
            console.log('mission.missionId = ${mission.missionId}');
            console.log('mission.runningState = ${mission.runningState}');
            console.log('mission.lockedState = ${mission.lockedState}');
            console.log('mission.timestamp = ${mission.timestamp}');
            console.log('mission.label = ${mission.label}');
            console.log('mission.iconPath = ${mission.iconPath}');
            }
        });
        } catch (paramError) {
            let code = (paramError as BusinessError).code;
            let message = (paramError as BusinessError).message;
            console.error(`error: ${code}, ${message} `);
        }
    })
    .catch((err: BusinessError) => {console.log('$(err.code)');});
  ```

## missionManager.getMissionInfo

getMissionInfo(deviceId: string, missionId: number): Promise&lt;MissionInfo&gt;;

获取任务信息，以promise方式返回任务信息。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;[MissionInfo](./js-apis-inner-application-missionInfo.md)&gt; | 任务信息。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 1;
try {
    missionManager.getMissionInfo('', testMissionId).then((data) => {
        console.info('getMissionInfo successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('getMissionInfo failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('getMissionInfo failed. Cause: ${error.message}');
}
```

## missionManager.getMissionInfos

getMissionInfos(deviceId: string, numMax: number, callback: AsyncCallback&lt;Array&lt;MissionInfo&gt;&gt;): void;

获取所有任务信息，以回调函数的方式返回任务信息数组。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | numMax | number | 是 | 任务信息数量上限。 |
  | callback | AsyncCallback&lt;Array&lt;[MissionInfo](./js-apis-inner-application-missionInfo.md)&gt;&gt; | 是 | 执行结果回调函数，返回任务信息数组。 |

**示例：**

  ```ts
  import missionManager from '@ohos.app.ability.missionManager';
  import { BusinessError } from '@ohos.base';

  try {
    missionManager.getMissionInfos('', 10, (error, missions) => {
      if (error) {
          console.error('getMissionInfos failed, error.code: ${error.code}, error.message: ${error.message}');
      } else {
        console.log('size = ${missions.length}');
        console.log('missions = ${JSON.stringify(missions)}');
      }
    });
  } catch (paramError) {
        let code = (paramError as BusinessError).code;
        let message = (paramError as BusinessError).message;
        console.error(`error: ${code}, ${message} `);
  }
  ```


## missionManager.getMissionInfos

getMissionInfos(deviceId: string, numMax: number): Promise&lt;Array&lt;MissionInfo&gt;&gt;;

获取所有任务信息，以promise的方式返回任务信息数组。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | numMax | number | 是 | 任务信息数量上限。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;Array&lt;[MissionInfo](./js-apis-inner-application-missionInfo.md)&gt;&gt; | 任务信息数组。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos('', 10).then((data) => {
        console.info('getMissionInfos successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('getMissionInfos failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('getMissionInfos failed. Cause: ${error.message}');
}
```

## missionManager.getMissionSnapShot

getMissionSnapShot(deviceId: string, missionId: number, callback: AsyncCallback&lt;MissionSnapshot&gt;): void;

获取任务快照，以回调函数的方式返回快照内容。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)&gt; | 是 | 执行结果回调函数，返回任务快照信息。 |

**示例：**
```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.getMissionSnapShot('', testMissionId, (err, data) => {
        if (err) {
            console.error('getMissionSnapShot failed: ${err.message}');
        } else {
            console.info('getMissionSnapShot successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('getMissionSnapShot failed: ${err.message}');
}
```

## missionManager.getMissionSnapShot

getMissionSnapShot(deviceId: string, missionId: number): Promise&lt;MissionSnapshot&gt;;

获取任务快照，以promise的方式返回快照内容。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)&gt; | 任务快照信息。 |

**示例：**
```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.getMissionSnapShot('', testMissionId).then((data) => {
        console.info('getMissionSnapShot successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('getMissionSnapShot failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('getMissionSnapShot failed. Cause: ${error.message}');
}
```

## missionManager.getLowResolutionMissionSnapShot

getLowResolutionMissionSnapShot(deviceId: string, missionId: number, callback: AsyncCallback\<MissionSnapshot>): void;

获取任务低分辨率快照。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)&gt; | 是 | 执行结果回调函数，返回任务快照信息。 |

**示例：**
```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.getLowResolutionMissionSnapShot('', testMissionId, (err, data) => {
        if (err) {
            console.error('getLowResolutionMissionSnapShot failed: ${err.message}');
        } else {
            console.info('getLowResolutionMissionSnapShot successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('getLowResolutionMissionSnapShot failed: ${err.message}');
}
```

## missionManager.getLowResolutionMissionSnapShot

getLowResolutionMissionSnapShot(deviceId: string, missionId: number): Promise\<MissionSnapshot>;

获取任务低分辨率快照。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | deviceId | string | 是 | 设备ID，本机默认为空字符串。 |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;[MissionSnapshot](js-apis-inner-application-missionSnapshot.md)&gt; | 任务快照信息。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.getLowResolutionMissionSnapShot('', testMissionId).then((data) => {
        console.info('getLowResolutionMissionSnapShot successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('getLowResolutionMissionSnapShot failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('getLowResolutionMissionSnapShot failed. Cause: ${error.message}');
}
```


## missionManager.lockMission

lockMission(missionId: number, callback: AsyncCallback&lt;void&gt;): void;

锁定指定任务id的任务，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300001 | Mission not found. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.lockMission(testMissionId, (err, data) => {
        if (err) {
            console.error('lockMission failed: ${err.message}');
        } else {
            console.info('lockMission successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('lockMission failed: ${err.message}');
}
```

## missionManager.lockMission

lockMission(missionId: number): Promise&lt;void&gt;;

锁定指定任务id的任务，以promise方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300001 | Mission not found. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**
```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.lockMission(testMissionId).then((data) => {
        console.info('lockMission successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('lockMission failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('lockMission failed. Cause: ${error.message}');
}
```

## missionManager.unlockMission

unlockMission(missionId: number, callback: AsyncCallback&lt;void&gt;): void;

解锁指定任务id的任务，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

| 参数名 | 类型 | 必填 | 说明 |
| -------- | -------- | -------- | -------- |
| missionId | number | 是 | 任务ID。 |
| callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300001 | Mission not found. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**
```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.unlockMission(testMissionId, (err, data) => {
        if (err) {
            console.error('unlockMission failed: ${err.message}');
        } else {
            console.info('unlockMission successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('unlockMission failed: ${err.message}');
}
```

## missionManager.unlockMission

unlockMission(missionId: number): Promise&lt;void&gt;;

解锁指定任务id的任务，以promise的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16300001 | Mission not found. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.unlockMission(testMissionId).then((data) => {
        console.info('unlockMission successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('unlockMission failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('unlockMission failed. Cause: ${error.message}');
}
```

## missionManager.clearMission

clearMission(missionId: number, callback: AsyncCallback&lt;void&gt;): void;

清理指定任务id的任务，无论该任务是否被锁定，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.clearMission(testMissionId, (err, data) => {
        if (err) {
            console.error('clearMission failed: ${err.message}');
        } else {
            console.info('clearMission successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('clearMission failed: ${err.message}');
}
```


## missionManager.clearMission

clearMission(missionId: number): Promise&lt;void&gt;;

清理指定任务id的任务，无论该任务是否被锁定，以promise的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.clearMission(testMissionId).then((data) => {
        console.info('clearMission successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('clearMission failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('clearMission failed. Cause: ${error.message}');
}
```

## missionManager.clearAllMissions

clearAllMissions(callback: AsyncCallback&lt;void&gt;): void;

清理所有未锁定的任务，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';

try {
    missionManager.clearAllMissions(err => {
        if (err) {
            console.error('clearAllMissions failed: ${err.message}');
        } else {
            console.info('clearAllMissions successfully.');
        }
    });
} catch (err) {
    console.error('clearAllMissions failed: ${err.message}');
}
```

## missionManager.clearAllMissions

clearAllMissions(): Promise&lt;void&gt;;

清理所有未锁定的任务，以promise的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.clearAllMissions().then((data) => {
        console.info('clearAllMissions successfully. Data: ${JSON.stringify(data)}');
    }).catch((err: BusinessError) => {
        console.error('clearAllMissions failed: ${err.message}');
    });
} catch (err) {
    console.error('clearAllMissions failed: ${err.message}');
}
```

## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, callback: AsyncCallback&lt;void&gt;): void;

把指定任务id的任务切到前台，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000009 | An ability cannot be started or stopped in Wukong mode. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.moveMissionToFront(testMissionId, (err, data) => {
        if (err) {
            console.error('moveMissionToFront failed: ${err.message}');
        } else {
            console.info('moveMissionToFront successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('moveMissionToFront failed: ${err.message}');
}
```

## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, options: StartOptions, callback: AsyncCallback&lt;void&gt;): void;

把指定任务id的任务切到前台，同时指定任务切换到前台时的启动参数，例如窗口模式、设备ID等，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |
  | options | [StartOptions](js-apis-app-ability-startOptions.md) | 是 | 启动参数选项，用于指定任务切到前台时的窗口模式，设备ID等。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000009 | An ability cannot be started or stopped in Wukong mode. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';

let testMissionId = 2;
try {
    missionManager.moveMissionToFront(testMissionId, {windowMode : 101}, (err, data) => {
        if (err) {
            console.error('moveMissionToFront failed: ${err.message}');
        } else {
            console.info('moveMissionToFront successfully: ${JSON.stringify(data)}');
        }
    });
} catch (err) {
    console.error('moveMissionToFront failed: ${err.message}');
}
```

## missionManager.moveMissionToFront

moveMissionToFront(missionId: number, options?: StartOptions): Promise&lt;void&gt;;

把指定任务id的任务切到前台，同时指定任务切换到前台时的启动参数，例如窗口模式、设备ID等，以promise的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统API**: 此接口为系统接口，三方应用不支持调用。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionId | number | 是 | 任务ID。 |
  | options | [StartOptions](js-apis-app-ability-startOptions.md) | 否 | 启动参数选项，用于指定任务切到前台时的窗口模式，设备ID等。默认为空，表示按照默认启动参数。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**错误码**：

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000009 | An ability cannot be started or stopped in Wukong mode. |

以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。

**示例：**

```ts
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

let testMissionId = 2;
try {
    missionManager.moveMissionToFront(testMissionId).then((data) => {
        console.info('moveMissionToFront successfully. Data: ${JSON.stringify(data)}');
    }).catch((error: BusinessError) => {
        console.error('moveMissionToFront failed. Cause: ${error.message}');
    });
} catch (error) {
    console.error('moveMissionToFront failed. Cause: ${error.message}');
}
```

## missionManager.moveMissionsToForeground<sup>10+</sup>

moveMissionsToForeground(missionIds: Array&lt;number&gt;, callback: AsyncCallback&lt;void&gt;): void;

将指定任务批量切到前台，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统接口**: 此接口为系统接口。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionIds | Array&lt;number&gt; | 是 | 任务ID数组。 |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

以下错误码的详细介绍请参见[errcode-ability](../errorcodes/errorcode-ability.md)。

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000050 | Internal error. |

**示例：**

```ts
import abilityManager from '@ohos.app.ability.abilityManager';
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos("", 10, (error, missionInfos) => {
        if (error.code) {
            console.log("getMissionInfos failed, error.code:" + JSON.stringify(error.code));
            return;
        }
        if (missionInfos.length < 1) {
            return;
        }

        let toShows = new Array<number>();
        for (let missionInfo of missionInfos) {
            if (missionInfo.abilityState == abilityManager.AbilityState.BACKGROUND) {
                toShows.push(missionInfo.missionId);
            }
        }
        missionManager.moveMissionsToForeground(toShows, (err, data) => {
            if (err) {
                console.error('moveMissionsToForeground failed: ${err.message}');
            } else {
                console.info('moveMissionsToForeground successfully: ${JSON.stringify(data)}');
            }
        });
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`error: ${code}, ${message} `);
}

```

## missionManager.moveMissionsToForeground<sup>10+</sup>

moveMissionsToForeground(missionIds: Array&lt;number&gt;, topMission: number, callback: AsyncCallback&lt;void&gt;): void;

将指定任务批量切换到前台，并将任务ID等于topMission的任务移动到最顶层，以回调函数的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统接口**: 此接口为系统接口。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionIds | Array&lt;number&gt; | 是 | 任务ID数组。 |
  | topMission | number | 是 | 待移动到最顶层的任务ID |
  | callback | AsyncCallback&lt;void&gt; | 是 | 执行结果回调函数。 |

**错误码**：

以下错误码的详细介绍请参见[errcode-ability](../errorcodes/errorcode-ability.md)。

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000050 | Internal error. |

**示例：**

```ts
import abilityManager from '@ohos.app.ability.abilityManager';
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos("", 10, (error, missionInfos) => {
        if (error.code) {
            console.log("getMissionInfos failed, error.code:" + JSON.stringify(error.code));
            return;
        }
        if (missionInfos.length < 1) {
            return;
        }

        let toShows = new Array<number>();
        for (let missionInfo of missionInfos) {
            if (missionInfo.abilityState == abilityManager.AbilityState.BACKGROUND) {
                toShows.push(missionInfo.missionId);
            }
        }
        missionManager.moveMissionsToForeground(toShows, toShows[0], (err, data) => {
            if (err) {
                console.error('moveMissionsToForeground failed: ${err.message}');
            } else {
                console.info('moveMissionsToForeground successfully: ${JSON.stringify(data)}');
            }
        });
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`error: ${code}, ${message} `);
}

```

## missionManager.moveMissionsToForeground<sup>10+</sup>

moveMissionsToForeground(missionIds: Array&lt;number&gt;, topMission?: number): Promise&lt;void&gt;；

将指定任务批量切到前台，并将任务ID等于topMission的任务移动到最顶层，以promise的方式返回。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统接口**: 此接口为系统接口。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionIds | Array&lt;number&gt; | 是 | 任务ID数组。 |
  | topMission | number | 否 | 待移动到最顶层的任务ID。默认值为-1，表示将默认任务移动到最顶层。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;void&gt; | promise方式返回执行结果。 |

**错误码**：

以下错误码的详细介绍请参见[errcode-ability](../errorcodes/errorcode-ability.md)。

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000050 | Internal error. |

**示例：**

```ts
import abilityManager from '@ohos.app.ability.abilityManager';
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos("", 10, (error, missionInfos) => {
        if (error.code) {
            console.log("getMissionInfos failed, error.code:" + JSON.stringify(error.code));
            return;
        }
        if (missionInfos.length < 1) {
            return;
        }

        let toShows = new Array<number>();
        for (let missionInfo of missionInfos) {
            if (missionInfo.abilityState == abilityManager.AbilityState.BACKGROUND) {
                toShows.push(missionInfo.missionId);
            }
        }
        missionManager.moveMissionsToForeground(toShows, toShows[0]).then(() => {
            console.log("moveMissionsToForeground is called" );
        });
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`error: ${code}, ${message} `);
}

```

## missionManager.moveMissionsToBackground<sup>10+</sup>

moveMissionsToBackground(missionIds: Array&lt;number&gt;, callback: AsyncCallback&lt;Array&lt;number&gt;&gt;): void;

将指定任务批量切到后台，以回调函数的方式返回, 返回的结果任务ID按被隐藏时的任务层级排序。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统接口**: 此接口为系统接口。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionIds | Array&lt;number&gt; | 是 | 任务ID数组。 |
  | callback | AsyncCallback&lt;Array&lt;number&gt;&gt; | 是 | 执行结果回调函数。 |

**错误码**：

以下错误码的详细介绍请参见[errcode-ability](../errorcodes/errorcode-ability.md)。

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000050 | Internal error. |

**示例：**

```ts
import abilityManager from '@ohos.app.ability.abilityManager';
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos("", 10, (error, missionInfos) => {
        if (error.code) {
            console.log("getMissionInfos failed, error.code:" + JSON.stringify(error.code));
            return;
        }

        let toHides = new Array<number>();
        for (let missionInfo of missionInfos) {
            if (missionInfo.abilityState ==  abilityManager.AbilityState.FOREGROUND) {
            toHides.push(missionInfo.missionId);
            }
        }
        missionManager.moveMissionsToBackground(toHides, (err, data) => {
            if (err) {
                console.error('moveMissionsToBackground failed: ${err.message}');
            } else {
                console.info('moveMissionsToBackground successfully: ${JSON.stringify(data)}');
            }
        });
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`error: ${code}, ${message} `);
}
```

## missionManager.moveMissionsToBackground<sup>10+</sup>

moveMissionsToBackground(missionIds : Array&lt;number&gt;): Promise&lt;Array&lt;number&gt;&gt;;

将指定任务批量切到后台，以promise的方式返回, 返回的结果按被隐藏时的任务层级排序。

**需要权限**：ohos.permission.MANAGE_MISSIONS

**系统能力**：SystemCapability.Ability.AbilityRuntime.Mission

**系统接口**: 此接口为系统接口。

**参数：**

  | 参数名 | 类型 | 必填 | 说明 |
  | -------- | -------- | -------- | -------- |
  | missionIds | Array&lt;number&gt; | 是 | 任务ID数组。 |

**返回值：**

  | 类型 | 说明 |
  | -------- | -------- |
  | Promise&lt;Array&lt;number&gt;&gt; | promise方式返回执行结果。 |

**错误码**：

以下错误码的详细介绍请参见[errcode-ability](../errorcodes/errorcode-ability.md)。

| 错误码ID | 错误信息 |
| ------- | -------- |
| 16000050 | Internal error. |

**示例：**

```ts
import abilityManager from '@ohos.app.ability.abilityManager';
import missionManager from '@ohos.app.ability.missionManager';
import { BusinessError } from '@ohos.base';

try {
    missionManager.getMissionInfos("", 10, (error, missionInfos) => {
        if (error.code) {
            console.log("getMissionInfos failed, error.code:" + JSON.stringify(error.code));
            return;
        }

        let toHides = new Array<number>();
        for (let missionInfo of missionInfos) {
            if (missionInfo.abilityState ==  abilityManager.AbilityState.FOREGROUND) {
            toHides.push(missionInfo.missionId);
            }
        }
        missionManager.moveMissionsToBackground(toHides).then((hideRes) => {
            console.log("moveMissionsToBackground is called, res: "+ JSON.stringify(hideRes));
        });
    });
} catch (paramError) {
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.error(`error: ${code}, ${message} `);
}

```
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