# @ohos.resourceschedule.deviceStandby(设备待机模块) 当设备长时间未被使用或通过按键,可以使设备进入待机模式。待机模式不影响应用使用,还可以延长电池续航时间。通过本模块接口,可查询设备是否为待机模式,以及使设备某个应用能避免纳入待机资源管控、解除避免资源管控。 > **说明:** > - 本模块首批接口从API version 10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 ```js import deviceStandby from '@ohos.resourceschedule.deviceStandby'; ``` 需要检查是否已经配置请求相应的权限: ohos.permission.DEVICE_STANDBY_EXEMPTION ## deviceStandby.isDeviceInStandby isDeviceInStandby(callback: AsyncCallback<boolean>): void; 当前设备是否进入待机低功耗续航模式,使用Callback异步回调。 **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby **参数**: | 参数名 | 类型 | 必填 | 说明 | | -------- | -------------------- | ---- | ------------------------------ | | callback | AsyncCallback<boolean> | 是 | 延迟即将超时的回调函数,一般在超时前6秒通过此回调通知应用。 | **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: try{ deviceStandby.isDeviceInStandby((err, res) => { if (err) { console.log('DEVICE_STANDBY isDeviceInStandby callback failed. code is: ' + err.code + ',message is: ' + err.message); } else { console.log('DEVICE_STANDBY isDeviceInStandby callback succeeded, result: ' + JSON.stringify(res)); } }); } catch(error) { console.log('DEVICE_STANDBY isDeviceInStandby throw error, code is: ' + error.code + ',message is: ' + error.message); } ## deviceStandby.isDeviceInStandby isDeviceInStandby(): Promise<boolean> 当前设备是否进入待机低功耗续航模式,使用Promise异步回调。 **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby **返回值**: | 类型 | 说明 | | --------------------- | ---------------------------------------- | | Promise<boolean> | 指定的Promise回调方法。返回是否进入待机低功耗续航模式。| **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: try{ deviceStandby.isDeviceInStandby().then( res => { console.log('DEVICE_STANDBY isDeviceInStandby promise succeeded, result: ' + JSON.stringify(res)); }).catch( err => { console.log('DEVICE_STANDBY isDeviceInStandby promise failed. code is: ' + err.code + ',message is: ' + err.message); }); } catch (error) { console.log('DEVICE_STANDBY isDeviceInStandby throw error, code is: ' + error.code + ',message is: ' + error.message); } ## deviceStandby.getExemptedApps getExemptedApps(resourceTypes: number, callback: AsyncCallback): void; 获取进入待机模式的应用名单,使用Callback异步回调。 **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby **系统API:** 此接口为系统接口。 **参数**: | 参数名 | 类型 | 必填 | 说明 | | -------- | -------------------- | ---- | ------------------------------ | | [ResourceType](#resourcetype)|number | 是 | 资源类型 | | callback | AsyncCallback | 是 |豁免应用信息 | **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: try{ deviceStandby.getExemptedApps(resourceTypes, (err, res) => { if (err) { console.log('DEVICE_STANDBY getExemptedApps callback failed. code is: ' + err.code + ',message is: ' + err.message); } else { console.log('DEVICE_STANDBY getExemptedApps callback success.'); for (let i = 0; i < res.length; i++) { console.log('DEVICE_STANDBY getExemptedApps callback result ' + JSON.stringify(res[i])); } } }); } catch (error) { console.log('DEVICE_STANDBY getExemptedApps throw error, code is: ' + error.code + ',message is: ' + error.message); } ## deviceStandby.getExemptedApps getExemptedApps(resourceTypes: number): Promise; 获取进入待机模式的应用名单,使用Promise异步回调。 **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby **系统API:** 此接口为系统接口。 **参数**: | 参数名 | 类型 | 必填 | 说明 | | -------- | -------------------- | ---- | ------------------------------ | | [ResourceType](#resourcetype)|number | 是 |资源类型| **返回值**: | 类型 | 说明 | | --------------------- | ---------------------------------------- | | Promise | 豁免应用信息 | **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 201 | Permission denied. | | 202 | Not System App. | | 401 | Parameter error. | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: try{ deviceStandby.getExemptedApps(resourceTypes).then( res => { console.log('DEVICE_STANDBY getExemptedApps promise success.'); for (let i = 0; i < res.length; i++) { console.log('DEVICE_STANDBY getExemptedApps promise result ' + JSON.stringify(res[i])); } }).catch( err => { console.log('DEVICE_STANDBY getExemptedApps promise failed. code is: ' + err.code + ',message is: ' + err.message); }); } catch (error) { console.log('DEVICE_STANDBY getExemptedApps throw error, code is: ' + error.code + ',message is: ' + error.message); } ## deviceStandby.requestExemptionResource requestExemptionResource(request: ResourceRequest): void; 订阅申请豁免,为应用申请临时不进入待机管控能力。(申请豁免待机状态解除指定类型资源限制) **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby.Exemption **系统API:** 此接口为系统接口。 **参数**: | 参数名 | 类型 | 必填 | 说明 | | -------- | -------------------- | ---- | ------------------------------ | | request |[ResourceRequest](#resourcerequest)| 是 | 资源请求 | **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: let resRequest = { resourceTypes: 1, uid:10003, name:"com.example.app", duration:10, reason:"apply", }; // 异步方法promise方式 try{ deviceStandby.requestExemptionResource(resRequest).then( () => { console.log('DEVICE_STANDBY requestExemptionResource promise succeeded.'); }).catch( err => { console.log('DEVICE_STANDBY requestExemptionResource promise failed. code is: ' + err.code + ',message is: ' + err.message); }); } catch (error) { console.log('DEVICE_STANDBY requestExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message); } // 异步方法callback方式 try{ deviceStandby.requestExemptionResource(resRequest, (err) => { if (err) { console.log('DEVICE_STANDBY requestExemptionResource callback failed. code is: ' + err.code + ',message is: ' + err.message); } else { console.log('DEVICE_STANDBY requestExemptionResource callback succeeded.'); } }); } catch (error) { console.log('DEVICE_STANDBY requestExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message); } ## deviceStandby.releaseExemptionResource releaseExemptionResource(request: ResourceRequest): void; 去除订阅申请豁免,去除应用暂时不进入待机管控的能力。(申请去除豁免待机状态解除指定类型资源限制) **系统能力:** SystemCapability.ResourceSchedule.DeviceStandby.Exemption **系统API:** 此接口为系统接口。 **参数**: | 参数名 | 类型 | 必填 | 说明 | | -------- | -------------------- | ---- | ------------------------------ | | request |[ResourceRequest](#resourcerequest)| 是 | 资源请求 | **错误码**: 以下错误码的详细介绍请参见[后台任务错误码](../errorcodes/errorcode-backgroundTaskMgr.md)。 | 错误码ID | 错误信息 | | ---- | --------------------- | | 9800001 | Memory operation failed. | | 9800002 | Parcel operation failed. | | 9800003 | IPC failed. | | 9800004 | System service operation failed. | | 18700001 | Caller information verification failed when applying for efficiency resources. | **示例**: let resRequest = { resourceTypes: 1, uid:10003, name:"com.demo.app", duration:10, reason:"unapply", }; // 异步方法promise方式 try{ deviceStandby.releaseExemptionResource(resRequest).then( () => { console.log('DEVICE_STANDBY releaseExemptionResource promise succeeded.'); }).catch( err => { console.log('DEVICE_STANDBY releaseExemptionResource promise failed. code is: ' + err.code + ',message is: ' + err.message); }); } catch (error) { console.log('DEVICE_STANDBY releaseExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message); } // 异步方法callback方式 try{ deviceStandby.releaseExemptionResource(resRequest, (err) => { if (err) { console.log('DEVICE_STANDBY releaseExemptionResource callback failed. code is: ' + err.code + ',message is: ' + err.message); } else { console.log('DEVICE_STANDBY releaseExemptionResource callback succeeded.'); } }); } catch (error) { console.log('DEVICE_STANDBY releaseExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message); } ## ResourceType 非待机应用资源枚举。
|名称 |值 |说明| | ------------ | ------------ |--------------| |NETWORK |1 |网络访问资源| |RUNNING_LOCK |2 |cpu-runninglock资源| |TIMER |4 | timer任务资源| |WORK_SCHEDULER |8 | work任务资源| |AUTO_SYNC |16 | 自动同步的资源 | |PUSH |32 | pushkit资源| |FREEZE |64 | 冻结应用资源| ## ExemptedAppInfo 豁免应用信息,不进入待机管控的应用信息。
|名称 |类型 |说明 | | ------------ | ------------ | ------------ | |resourceTypes | number |应用的资源类型 | |name |string | 应用名 | |duration | number | 豁免时长 | ## ResourceRequest 待机资源请求体。
|名称 |类型 |说明 | | ------------ | ------------ | ------------ | |resourceTypes | number |应用的资源类型 | |uid | number |应用uid | |name |string | 应用名称 | |duration | number | 豁免时长 | |reason |string | 申请原因 |