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未验证 提交 48a70a63 编写于 作者: 朱 朱天怡 提交者： Gitee
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Signed-off-by: N朱天怡 <zhutianyi2@huawei.com>
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zh-cn/application-dev/task-management/continuous-task.md
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...@@ -81,8 +81,9 @@ ...@@ -81,8 +81,9 @@
3. 导入模块。 3. 导入模块。
```ts ```ts
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager'; import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent'; import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
import { BusinessError } from '@ohos.base';
``` ```
4. 申请和取消长时任务。 4. 申请和取消长时任务。
...@@ -184,134 +185,129 @@ ...@@ -184,134 +185,129 @@
**跨设备或跨应用**申请长时任务示例代码如下： **跨设备或跨应用**申请长时任务示例代码如下：
```ts ```ts
import UIAbility from '@ohos.app.ability.UIAbility'; import UIAbility from '@ohos.app.ability.UIAbility';
import window from '@ohos.window'; import window from '@ohos.window';
import AbilityConstant from '@ohos.app.ability.AbilityConstant'; import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want'; import Want from '@ohos.app.ability.Want';
import rpc from '@ohos.rpc';
const MSG_SEND_METHOD: string = 'CallSendMsg'
const MSG_SEND_METHOD: string = 'CallSendMsg'
let mContext = null;
let mContext: Context;
function startContinuousTask() {
let wantAgentInfo = { function startContinuousTask() {
// 点击通知后，将要执行的动作列表 let wantAgentInfo : wantAgent.WantAgentInfo = {
wants: [ // 点击通知后，将要执行的动作列表
{ wants: [
bundleName: "com.example.myapplication", {
abilityName: "com.example.myapplication.MainAbility", bundleName: "com.example.myapplication",
} abilityName: "com.example.myapplication.MainAbility",
], }
// 点击通知后，动作类型 ],
operationType: wantAgent.OperationType.START_ABILITY, // 点击通知后，动作类型
// 使用者自定义的一个私有值 operationType: wantAgent.OperationType.START_ABILITY,
requestCode: 0, // 使用者自定义的一个私有值
// 点击通知后，动作执行属性 requestCode: 0,
wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG] // 点击通知后，动作执行属性
}; wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
};
// 通过wantAgent模块的getWantAgent方法获取WantAgent对象
wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => { // 通过wantAgent模块的getWantAgent方法获取WantAgent对象
try { wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj : WantAgent) => {
backgroundTaskManager.startBackgroundRunning(mContext, backgroundTaskManager.startBackgroundRunning(mContext,
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => { backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
console.info(`Succeeded in operationing startBackgroundRunning.`); console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err) => { }).catch((err: BusinessError) => {
console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`); console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
}); });
} catch (err) { });
console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`); }
}
}); function stopContinuousTask() {
} backgroundTaskManager.stopBackgroundRunning(mContext).then(() => {
console.info(`Succeeded in operationing stopBackgroundRunning.`);
function stopContinuousTask() { }).catch((err: BusinessError) => {
try { console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
backgroundTaskManager.stopBackgroundRunning(mContext).then(() => { });
console.info(`Succeeded in operationing stopBackgroundRunning.`); }
}).catch((err) => {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`); class MyParcelable {
}); num: number = 0;
} catch (err) { str: String = '';
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
} constructor(num: number, string: string) {
} this.num = num;
this.str = string;
class MyParcelable { }
num: number = 0;
str: String = ''; marshalling(messageSequence: rpc.MessageSequence) {
messageSequence.writeInt(this.num);
constructor(num, string) { messageSequence.writeString(this.str);
this.num = num; return true;
this.str = string; }
}
unmarshalling(messageSequence: rpc.MessageSequence) {
marshalling(messageSequence) { this.num = messageSequence.readInt();
messageSequence.writeInt(this.num); this.str = messageSequence.readString();
messageSequence.writeString(this.str); return true;
return true; }
} }
unmarshalling(messageSequence) { function sendMsgCallback(data: rpc.MessageSequence) {
this.num = messageSequence.readInt(); console.info('BgTaskAbility funcCallBack is called ' + data);
this.str = messageSequence.readString(); let receivedData = new MyParcelable(0, '');
return true; data.readParcelable(receivedData);
} console.info(`receiveData[${receivedData.num}, ${receivedData.str}]`);
} // 可以根据Caller端发送的序列化数据的str值，执行不同的方法。
if (receivedData.str === 'start_bgtask') {
function sendMsgCallback(data) { startContinuousTask();
console.info('BgTaskAbility funcCallBack is called ' + data) } else if (receivedData.str === 'stop_bgtask') {
let receivedData = new MyParcelable(0, '') stopContinuousTask();
data.readParcelable(receivedData) }
console.info(`receiveData[${receivedData.num}, ${receivedData.str}]`) return new MyParcelable(10, 'Callee test');
// 可以根据Caller端发送的序列化数据的str值，执行不同的方法。 }
if (receivedData.str === 'start_bgtask') {
startContinuousTask() export default class BgTaskAbility extends UIAbility {
} else if (receivedData.str === 'stop_bgtask') { onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
stopContinuousTask(); console.info("[Demo] BgTaskAbility onCreate");
} this.callee.on('test', sendMsgCallback);
return new MyParcelable(10, 'Callee test');
} try {
this.callee.on(MSG_SEND_METHOD, sendMsgCallback)
export default class BgTaskAbility extends UIAbility { } catch (error) {
onCreate(want, launchParam) { console.error(`${MSG_SEND_METHOD} register failed with error ${JSON.stringify(error)}`);
console.info("[Demo] BgTaskAbility onCreate") }
this.callee.on('test', sendMsgCallback); mContext = this.context;
}
try {
this.callee.on(MSG_SEND_METHOD, sendMsgCallback) onDestroy() {
} catch (error) { console.info('[Demo] BgTaskAbility onDestroy');
console.error(`${MSG_SEND_METHOD} register failed with error ${JSON.stringify(error)}`) }
}
mContext = this.context; onWindowStageCreate(windowStage: window.WindowStage) {
} console.info('[Demo] BgTaskAbility onWindowStageCreate');
onDestroy() { windowStage.loadContent('pages/Index', (error, data) => {
console.info('[Demo] BgTaskAbility onDestroy') if (error.code) {
} console.error(`load content failed with error ${JSON.stringify(error)}`);
return;
onWindowStageCreate(windowStage) { }
console.info('[Demo] BgTaskAbility onWindowStageCreate') console.info(`load content succeed with data ${JSON.stringify(data)}`);
});
windowStage.loadContent("pages/index").then((data) => { }
console.info(`load content succeed with data ${JSON.stringify(data)}`)
}).catch((error) => { onWindowStageDestroy() {
console.error(`load content failed with error ${JSON.stringify(error)}`) console.info('[Demo] BgTaskAbility onWindowStageDestroy');
}) }
}
onForeground() {
onWindowStageDestroy() { console.info('[Demo] BgTaskAbility onForeground');
console.info('[Demo] BgTaskAbility onWindowStageDestroy') }
}
onBackground() {
onForeground() { console.info('[Demo] BgTaskAbility onBackground');
console.info('[Demo] BgTaskAbility onForeground') }
} };
onBackground() {
console.info('[Demo] BgTaskAbility onBackground')
}
};
``` ```
...@@ -350,119 +346,112 @@ ...@@ -350,119 +346,112 @@
3. 导入模块。 3. 导入模块。
```js ```js
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager'; import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import featureAbility from '@ohos.ability.featureAbility'; import featureAbility from '@ohos.ability.featureAbility';
import wantAgent from '@ohos.app.ability.wantAgent'; import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
import rpc from "@ohos.rpc"; import rpc from "@ohos.rpc";
import { BusinessError } from '@ohos.base';
``` ```
4. 申请和取消长时任务。在 ServiceAbility 中，调用 startBackgroundRunning() 接口和 startBackgroundRunning() 接口实现长时任务的申请和取消。 4. 申请和取消长时任务。在 ServiceAbility 中，调用 startBackgroundRunning() 接口和 startBackgroundRunning() 接口实现长时任务的申请和取消。
```js ```js
function startContinuousTask() { function startContinuousTask() {
let wantAgentInfo = { let wantAgentInfo: wantAgent.WantAgentInfo = {
// 点击通知后，将要执行的动作列表 // 点击通知后，将要执行的动作列表
wants: [ wants: [
{ {
bundleName: "com.example.myapplication", bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.MainAbility" abilityName: "com.example.myapplication.MainAbility"
} }
], ],
// 点击通知后，动作类型 // 点击通知后，动作类型
operationType: wantAgent.OperationType.START_ABILITY, operationType: wantAgent.OperationType.START_ABILITY,
// 使用者自定义的一个私有值 // 使用者自定义的一个私有值
requestCode: 0, requestCode: 0,
// 点击通知后，动作执行属性 // 点击通知后，动作执行属性
wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG] wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
}; };
// 通过wantAgent模块的getWantAgent方法获取WantAgent对象 // 通过wantAgent模块的getWantAgent方法获取WantAgent对象
wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => { wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
try { backgroundTaskManager.startBackgroundRunning(featureAbility.getContext(),
backgroundTaskManager.startBackgroundRunning(featureAbility.getContext(), backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => { console.info(`Succeeded in operationing startBackgroundRunning.`);
console.info(`Succeeded in operationing startBackgroundRunning.`); }).catch((err: BusinessError) => {
}).catch((err) => { console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`); });
}); });
} catch (error) { }
console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
} function stopContinuousTask() {
}); backgroundTaskManager.stopBackgroundRunning(featureAbility.getContext()).then(() => {
} console.info(`Succeeded in operationing stopBackgroundRunning.`);
}).catch((err: BusinessError) => {
function stopContinuousTask() { console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
try { });
backgroundTaskManager.stopBackgroundRunning(featureAbility.getContext()).then(() => { }
console.info(`Succeeded in operationing stopBackgroundRunning.`);
}).catch((err) => { async function processAsyncJobs() {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`); // 此处执行具体的长时任务。
});
} catch (error) { // 长时任务执行完，调用取消接口，释放资源。
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`); stopContinuousTask();
} }
}
let mMyStub: MyStub;
async function processAsyncJobs() {
// 此处执行具体的长时任务。 class MyStub extends rpc.RemoteObject {
constructor(des) {
// 长时任务执行完，调用取消接口，释放资源。 if (typeof des === 'string') {
stopContinuousTask(); super(des);
} } else {
return null;
let mMyStub; }
}
class MyStub extends rpc.RemoteObject {
constructor(des) { onRemoteRequest(code, data, reply, option) {
if (typeof des === 'string') { console.log('ServiceAbility onRemoteRequest called');
super(des); // code 的具体含义用户自定义
} else { if (code === 1) {
return null; // 接收到申请长时任务的请求码
} startContinuousTask();
} // 此处执行具体长时任务
} else if (code === 2) {
onRemoteRequest(code, data, reply, option) { // 接收到取消长时任务的请求码
console.log('ServiceAbility onRemoteRequest called'); stopContinuousTask();
// code 的具体含义用户自定义 } else {
if (code === 1) { console.log('ServiceAbility unknown request code');
// 接收到申请长时任务的请求码 }
startContinuousTask(); return true;
// 此处执行具体长时任务 }
} else if (code === 2) { }
// 接收到取消长时任务的请求码
stopContinuousTask(); export default {
} else { onStart(want) {
console.log('ServiceAbility unknown request code'); console.info('ServiceAbility onStart');
} mMyStub = new MyStub("ServiceAbility-test");
return true; // 在执行长时任务前，调用申请接口。
} startContinuousTask();
} processAsyncJobs();
},
export default { onStop() {
onStart(want) { console.info('ServiceAbility onStop');
console.info('ServiceAbility onStart'); },
mMyStub = new MyStub("ServiceAbility-test"); onConnect(want) {
// 在执行长时任务前，调用申请接口。 console.info('ServiceAbility onConnect');
startContinuousTask(); return mMyStub;
processAsyncJobs(); },
}, onReconnect(want) {
onStop() { console.info('ServiceAbility onReconnect');
console.info('ServiceAbility onStop'); },
}, onDisconnect() {
onConnect(want) { console.info('ServiceAbility onDisconnect');
console.info('ServiceAbility onConnect'); },
return mMyStub; onCommand(want, restart, startId) {
}, console.info('ServiceAbility onCommand');
onReconnect(want) { }
console.info('ServiceAbility onReconnect'); };
},
onDisconnect() {
console.info('ServiceAbility onDisconnect');
},
onCommand(want, restart, startId) {
console.info('ServiceAbility onCommand');
}
};
``` ```
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