update zh-cn/application-dev/work-scheduler/work-scheduler-dev-guide.md.

Signed-off-by: NLiAn <lian15@huawei.com>

zh-cn/application-dev/work-scheduler/work-scheduler-dev-guide.md

-# 延迟任务调度开发指导
-
-## 场景介绍
-
-应用要执行对实时性要求不高的任务的时候，比如设备空闲时候做一次数据学习等场景，可以使用延迟调度任务，该机制在满足应用设定条件的时候，会根据系统当前状态，如内存、功耗、热等统一决策调度时间。
-
-
-## 接口说明
-注册相关接口包导入：
-```js
-import workScheduler from '@ohos.workScheduler';
-```
-
-回调相关接口包导入：
-```js
-import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
-```
-
-### 延迟任务调度
-
-**表1** workScheduler主要接口
-
-接口名                                                    |     接口描述                            
----------------------------------------------------------|-----------------------------------------
-function startWork(work: WorkInfo): boolean; | 延迟调度任务申请 
-function stopWork(work: WorkInfo, needCancel?: boolean): boolean;        | 延迟调度任务取消 
-function getWorkStatus(workId: number, callback: AsyncCallback<WorkInfo>): void;| 获取延迟调度任务状态（Callback形式） 
-function getWorkStatus(workId: number): Promise<WorkInfo>; | 获取延迟调度任务状态（Promise形式） 
-function obtainAllWorks(callback: AsyncCallback<void>): Array<WorkInfo>;| 获取所有延迟调度任务（Callback形式） 
-function obtainAllWorks(): Promise<Array<WorkInfo>>;| 获取所有延迟调度任务（Promise形式） 
-function stopAndClearWorks(): boolean;| 停止并清除任务
-function isLastWorkTimeOut(workId: number, callback: AsyncCallback<void>): boolean;| 获取上次任务是否超时（针对RepeatWork，Callback形式）
-function isLastWorkTimeOut(workId: number): Promise<boolean>;| 获取上次任务是否超时（针对RepeatWork，Promise形式）
-
-**表2** WorkInfo包含参数
-
-接口名|描述|类型                           
----------------------------------------------------------|-----------------------------------------|---------------------------------------------------------
-workId | 延迟任务Id（必填）|number
-bundleName | 延迟任务包名（必填）|string
-abilityName | 延迟任务回调通知的组件名（必填）|string
-networkType | 网络条件 | NetworkType
-isCharging | 是否充电 | bool
-chargerType | 充电类型 | ChargingType
-batteryLevel | 电量| number
-batteryStatus| 电池状态|    BatteryStatus
-storageRequest|存储状态|    StorageRequest
-isRepeat|是否循环任务|    boolean
-repeatCycleTime |循环间隔|    number
-repeatCount    |循环次数| number
-
-**表3** 延迟任务回调接口
-
-接口名                                                    |     接口描述                            
----------------------------------------------------------|-----------------------------------------
-function onWorkStart(work: WorkInfo): void; | 延迟调度任务开始回调
-function onWorkStop(work: WorkInfo): void; | 延迟调度任务结束回调
-
-### 开发步骤
-
-**开发对应的Extension**
-
-    import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
-
-    export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
-        onWorkStart(workInfo) {
-            console.log('MyWorkSchedulerExtensionAbility onWorkStart' + JSON.stringify(workInfo));
-        }
-        onWorkStop(workInfo) {
-            console.log('MyWorkSchedulerExtensionAbility onWorkStop' + JSON.stringify(workInfo));
-        }
-    }
-
-
+# 延迟任务调度开发指导
+
+## 场景介绍
+
+应用要执行对实时性要求不高的任务的时候，比如设备空闲时候做一次数据学习等场景，可以使用延迟调度任务，该机制在满足应用设定条件的时候，会根据系统当前状态，如内存、功耗、热等统一决策调度时间。
+
+
+## 接口说明
+注册相关接口包导入：
+```js
+import workScheduler from '@ohos.workScheduler';
+```
+
+回调相关接口包导入：
+```js
+import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
+```
+
+### 延迟任务调度
+
+**表1** workScheduler主要接口
+
+接口名                                                    |     接口描述                            
+---------------------------------------------------------|-----------------------------------------
+function startWork(work: WorkInfo): boolean; | 延迟调度任务申请 
+function stopWork(work: WorkInfo, needCancel?: boolean): boolean;        | 延迟调度任务取消 
+function getWorkStatus(workId: number, callback: AsyncCallback<WorkInfo>): void;| 获取延迟调度任务状态（Callback形式） 
+function getWorkStatus(workId: number): Promise<WorkInfo>; | 获取延迟调度任务状态（Promise形式） 
+function obtainAllWorks(callback: AsyncCallback<void>): Array<WorkInfo>;| 获取所有延迟调度任务（Callback形式） 
+function obtainAllWorks(): Promise<Array<WorkInfo>>;| 获取所有延迟调度任务（Promise形式） 
+function stopAndClearWorks(): boolean;| 停止并清除任务
+function isLastWorkTimeOut(workId: number, callback: AsyncCallback<void>): boolean;| 获取上次任务是否超时（针对RepeatWork，Callback形式）
+function isLastWorkTimeOut(workId: number): Promise<boolean>;| 获取上次任务是否超时（针对RepeatWork，Promise形式）
+
+**表2** WorkInfo包含参数
+
+接口名|描述|类型                           
+---------------------------------------------------------|-----------------------------------------|---------------------------------------------------------
+workId | 延迟任务Id（必填）|number
+bundleName | 延迟任务包名（必填）|string
+abilityName | 延迟任务回调通知的组件名（必填）|string
+networkType | 网络类型 | NetworkType
+isCharging | 是否充电 | boolean
+chargerType | 充电类型 | ChargingType
+batteryLevel | 电量| number
+batteryStatus| 电池状态|    BatteryStatus
+storageRequest|存储状态|    StorageRequest
+isRepeat|是否循环任务|    boolean
+repeatCycleTime |循环间隔|    number
+repeatCount    |循环次数| number
+
+**表3** 延迟任务回调接口
+
+接口名                                                    |     接口描述                            
+---------------------------------------------------------|-----------------------------------------
+function onWorkStart(work: WorkInfo): void; | 延迟调度任务开始回调
+function onWorkStop(work: WorkInfo): void; | 延迟调度任务结束回调
+
+### 开发步骤
+
+**开发对应的Extension**
+
+    import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
+
+    export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
+        onWorkStart(workInfo) {
+            console.log('MyWorkSchedulerExtensionAbility onWorkStart' + JSON.stringify(workInfo));
+        }
+        onWorkStop(workInfo) {
+            console.log('MyWorkSchedulerExtensionAbility onWorkStop' + JSON.stringify(workInfo));
+        }
+    }
+
+
 **注册延迟任务**
-
-
-
-    import workScheduler from '@ohos.workScheduler';
-
-    let workInfo = {
-        workId: 1,
-        batteryLevel:50,
-        batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
-        isRepeat: false,
-        isPersisted: true,
-        bundleName: "com.example.myapplication",
-        abilityName: "MyExtension"
-    }
-    var res = workScheduler.startWork(workInfo);
-    console.info("workschedulerLog res:" + res);
-
-
-**取消延迟任务**
-
-
-    import workScheduler from '@ohos.workScheduler';
-
-    let workInfo = {
-        workId: 1,
-        batteryLevel:50,
-        batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
-        isRepeat: false,
-        isPersisted: true,
-        bundleName: "com.example.myapplication",
-        abilityName: "MyExtension"
-    }
-    var res = workScheduler.stopWork(workInfo, false);
-    console.info("workschedulerLog res:" + res);
-
-
-**获取指定延迟任务**
-
-1.Callback写法
-
-    workScheduler.getWorkStatus(50, (err, res) => {
-      if (err) {
-        console.info('workschedulerLog getWorkStatus failed, because:' + err.data);
-      } else {
-        for (let item in res) {
-          console.info('workschedulerLog getWorkStatuscallback success,' + item + ' is:' + res[item]);
-        }
-      }
-    });
-
-
-2.Promise写法
-
-    workScheduler.getWorkStatus(50).then((res) => {
-      for (let item in res) {
-        console.info('workschedulerLog getWorkStatus success,' + item + ' is:' + res[item]);
-      }
-    }).catch((err) => {
-      console.info('workschedulerLog getWorkStatus failed, because:' + err.data);
-    })
-
-
-**获取所有延迟任务**
-
-1.Callback写法
-
-    workScheduler.obtainAllWorks((err, res) =>{
-      if (err) {
-        console.info('workschedulerLog obtainAllWorks failed, because:' + err.data);
-      } else {
-        console.info('workschedulerLog obtainAllWorks success, data is:' + JSON.stringify(res));
-      }
-    });
-
-2.Promise写法
-
-    workScheduler.obtainAllWorks().then((res) => {
-      console.info('workschedulerLog obtainAllWorks success, data is:' + JSON.stringify(res));
-    }).catch((err) => {
-      console.info('workschedulerLog obtainAllWorks failed, because:' + err.data);
-    })
-
-**停止并清除任务**
-
-    let res = workScheduler.stopAndClearWorks();
-    console.info("workschedulerLog res:" + res);
-
-**判断上次执行是否超时**
-
-1.Callback写法
-
-    workScheduler.isLastWorkTimeOut(500, (err, res) =>{
-      if (err) {
-        console.info('workschedulerLog isLastWorkTimeOut failed, because:' + err.data);
-      } else {
-        console.info('workschedulerLog isLastWorkTimeOut success, data is:' + res);
-      }
-    });
-
-2.Promise写法
-
-    workScheduler.isLastWorkTimeOut(500)
-      .then(res => {
-        console.info('workschedulerLog isLastWorkTimeOut success, data is:' + res);
-      })
-      .catch(err =>  {
-        console.info('workschedulerLog isLastWorkTimeOut failed, because:' + err.data);
-      });
+
+
+
+    import workScheduler from '@ohos.workScheduler';
+
+    let workInfo = {
+        workId: 1,
+        batteryLevel:50,
+        batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
+        isRepeat: false,
+        isPersisted: true,
+        bundleName: "com.example.myapplication",
+        abilityName: "MyExtension"
+    }
+    var res = workScheduler.startWork(workInfo);
+    console.info("workschedulerLog res:" + res);
+
+
+**取消延迟任务**
+
+
+    import workScheduler from '@ohos.workScheduler';
+
+    let workInfo = {
+        workId: 1,
+        batteryLevel:50,
+        batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
+        isRepeat: false,
+        isPersisted: true,
+        bundleName: "com.example.myapplication",
+        abilityName: "MyExtension"
+    }
+    var res = workScheduler.stopWork(workInfo, false);
+    console.info("workschedulerLog res:" + res);
+
+
+**获取指定延迟任务**
+
+1.Callback写法
+
+    workScheduler.getWorkStatus(50, (err, res) => {
+      if (err) {
+        console.info('workschedulerLog getWorkStatus failed, because:' + err.data);
+      } else {
+        for (let item in res) {
+          console.info('workschedulerLog getWorkStatuscallback success,' + item + ' is:' + res[item]);
+        }
+      }
+    });
+
+
+2.Promise写法
+
+    workScheduler.getWorkStatus(50).then((res) => {
+      for (let item in res) {
+        console.info('workschedulerLog getWorkStatus success,' + item + ' is:' + res[item]);
+      }
+    }).catch((err) => {
+      console.info('workschedulerLog getWorkStatus failed, because:' + err.data);
+    })
+
+
+**获取所有延迟任务**
+
+1.Callback写法
+
+    workScheduler.obtainAllWorks((err, res) =>{
+      if (err) {
+        console.info('workschedulerLog obtainAllWorks failed, because:' + err.data);
+      } else {
+        console.info('workschedulerLog obtainAllWorks success, data is:' + JSON.stringify(res));
+      }
+    });
+
+2.Promise写法
+
+    workScheduler.obtainAllWorks().then((res) => {
+      console.info('workschedulerLog obtainAllWorks success, data is:' + JSON.stringify(res));
+    }).catch((err) => {
+      console.info('workschedulerLog obtainAllWorks failed, because:' + err.data);
+    })
+
+**停止并清除任务**
+
+    let res = workScheduler.stopAndClearWorks();
+    console.info("workschedulerLog res:" + res);
+
+**判断上次执行是否超时**
+
+1.Callback写法
+
+    workScheduler.isLastWorkTimeOut(500, (err, res) =>{
+      if (err) {
+        console.info('workschedulerLog isLastWorkTimeOut failed, because:' + err.data);
+      } else {
+        console.info('workschedulerLog isLastWorkTimeOut success, data is:' + res);
+      }
+    });
+
+2.Promise写法
+
+    workScheduler.isLastWorkTimeOut(500)
+      .then(res => {
+        console.info('workschedulerLog isLastWorkTimeOut success, data is:' + res);
+      })
+      .catch(err =>  {
+        console.info('workschedulerLog isLastWorkTimeOut failed, because:' + err.data);
+      });
     })
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