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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>
上级 69c7d53f
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zh-cn/application-dev/task-management/continuous-task.md
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......@@ -81,8 +81,9 @@
3. 导入模块。
```ts
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
import { BusinessError } from '@ohos.base';
```
4. 申请和取消长时任务。
......@@ -184,134 +185,129 @@
**跨设备或跨应用**申请长时任务示例代码如下：
```ts
import UIAbility from '@ohos.app.ability.UIAbility';
import window from '@ohos.window';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want';
const MSG_SEND_METHOD: string = 'CallSendMsg'
let mContext = null;
function startContinuousTask() {
let wantAgentInfo = {
// 点击通知后，将要执行的动作列表
wants: [
{
bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.MainAbility",
}
],
// 点击通知后，动作类型
operationType: wantAgent.OperationType.START_ABILITY,
// 使用者自定义的一个私有值
requestCode: 0,
// 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) => {
try {
backgroundTaskManager.startBackgroundRunning(mContext,
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err) => {
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() {
try {
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}`);
});
} catch (err) {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
}
}
class MyParcelable {
num: number = 0;
str: String = '';
constructor(num, string) {
this.num = num;
this.str = string;
}
marshalling(messageSequence) {
messageSequence.writeInt(this.num);
messageSequence.writeString(this.str);
return true;
}
unmarshalling(messageSequence) {
this.num = messageSequence.readInt();
this.str = messageSequence.readString();
return true;
}
}
function sendMsgCallback(data) {
console.info('BgTaskAbility funcCallBack is called ' + data)
let receivedData = new MyParcelable(0, '')
data.readParcelable(receivedData)
console.info(`receiveData[${receivedData.num}, ${receivedData.str}]`)
// 可以根据Caller端发送的序列化数据的str值，执行不同的方法。
if (receivedData.str === 'start_bgtask') {
startContinuousTask()
} else if (receivedData.str === 'stop_bgtask') {
stopContinuousTask();
}
return new MyParcelable(10, 'Callee test');
}
export default class BgTaskAbility extends UIAbility {
onCreate(want, launchParam) {
console.info("[Demo] BgTaskAbility onCreate")
this.callee.on('test', sendMsgCallback);
try {
this.callee.on(MSG_SEND_METHOD, sendMsgCallback)
} catch (error) {
console.error(`${MSG_SEND_METHOD} register failed with error ${JSON.stringify(error)}`)
}
mContext = this.context;
}
onDestroy() {
console.info('[Demo] BgTaskAbility onDestroy')
}
onWindowStageCreate(windowStage) {
console.info('[Demo] BgTaskAbility onWindowStageCreate')
windowStage.loadContent("pages/index").then((data) => {
console.info(`load content succeed with data ${JSON.stringify(data)}`)
}).catch((error) => {
console.error(`load content failed with error ${JSON.stringify(error)}`)
})
}
onWindowStageDestroy() {
console.info('[Demo] BgTaskAbility onWindowStageDestroy')
}
onForeground() {
console.info('[Demo] BgTaskAbility onForeground')
}
onBackground() {
console.info('[Demo] BgTaskAbility onBackground')
}
};
import UIAbility from '@ohos.app.ability.UIAbility';
import window from '@ohos.window';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want';
import rpc from '@ohos.rpc';
const MSG_SEND_METHOD: string = 'CallSendMsg'
let mContext: Context;
function startContinuousTask() {
let wantAgentInfo : wantAgent.WantAgentInfo = {
// 点击通知后，将要执行的动作列表
wants: [
{
bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.MainAbility",
}
],
// 点击通知后，动作类型
operationType: wantAgent.OperationType.START_ABILITY,
// 使用者自定义的一个私有值
requestCode: 0,
// 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 : WantAgent) => {
backgroundTaskManager.startBackgroundRunning(mContext,
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err: BusinessError) => {
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.`);
}).catch((err: BusinessError) => {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
});
}
class MyParcelable {
num: number = 0;
str: String = '';
constructor(num: number, string: string) {
this.num = num;
this.str = string;
}
marshalling(messageSequence: rpc.MessageSequence) {
messageSequence.writeInt(this.num);
messageSequence.writeString(this.str);
return true;
}
unmarshalling(messageSequence: rpc.MessageSequence) {
this.num = messageSequence.readInt();
this.str = messageSequence.readString();
return true;
}
}
function sendMsgCallback(data: rpc.MessageSequence) {
console.info('BgTaskAbility funcCallBack is called ' + data);
let receivedData = new MyParcelable(0, '');
data.readParcelable(receivedData);
console.info(`receiveData[${receivedData.num}, ${receivedData.str}]`);
// 可以根据Caller端发送的序列化数据的str值，执行不同的方法。
if (receivedData.str === 'start_bgtask') {
startContinuousTask();
} else if (receivedData.str === 'stop_bgtask') {
stopContinuousTask();
}
return new MyParcelable(10, 'Callee test');
}
export default class BgTaskAbility extends UIAbility {
onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
console.info("[Demo] BgTaskAbility onCreate");
this.callee.on('test', sendMsgCallback);
try {
this.callee.on(MSG_SEND_METHOD, sendMsgCallback)
} catch (error) {
console.error(`${MSG_SEND_METHOD} register failed with error ${JSON.stringify(error)}`);
}
mContext = this.context;
}
onDestroy() {
console.info('[Demo] BgTaskAbility onDestroy');
}
onWindowStageCreate(windowStage: window.WindowStage) {
console.info('[Demo] BgTaskAbility onWindowStageCreate');
windowStage.loadContent('pages/Index', (error, data) => {
if (error.code) {
console.error(`load content failed with error ${JSON.stringify(error)}`);
return;
}
console.info(`load content succeed with data ${JSON.stringify(data)}`);
});
}
onWindowStageDestroy() {
console.info('[Demo] BgTaskAbility onWindowStageDestroy');
}
onForeground() {
console.info('[Demo] BgTaskAbility onForeground');
}
onBackground() {
console.info('[Demo] BgTaskAbility onBackground');
}
};
```
......@@ -350,119 +346,112 @@
3. 导入模块。
```js
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import featureAbility from '@ohos.ability.featureAbility';
import wantAgent from '@ohos.app.ability.wantAgent';
import rpc from "@ohos.rpc";
import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
import featureAbility from '@ohos.ability.featureAbility';
import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
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。
```js
function startContinuousTask() {
let wantAgentInfo = {
// 点击通知后，将要执行的动作列表
wants: [
{
bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.MainAbility"
}
],
// 点击通知后，动作类型
operationType: wantAgent.OperationType.START_ABILITY,
// 使用者自定义的一个私有值
requestCode: 0,
// 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) => {
try {
backgroundTaskManager.startBackgroundRunning(featureAbility.getContext(),
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err) => {
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() {
try {
backgroundTaskManager.stopBackgroundRunning(featureAbility.getContext()).then(() => {
console.info(`Succeeded in operationing stopBackgroundRunning.`);
}).catch((err) => {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
});
} catch (error) {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
}
}
async function processAsyncJobs() {
// 此处执行具体的长时任务。
// 长时任务执行完，调用取消接口，释放资源。
stopContinuousTask();
}
let mMyStub;
class MyStub extends rpc.RemoteObject {
constructor(des) {
if (typeof des === 'string') {
super(des);
} else {
return null;
}
}
onRemoteRequest(code, data, reply, option) {
console.log('ServiceAbility onRemoteRequest called');
// code 的具体含义用户自定义
if (code === 1) {
// 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) {
// 接收到取消长时任务的请求码
stopContinuousTask();
} else {
console.log('ServiceAbility unknown request code');
}
return true;
}
}
export default {
onStart(want) {
console.info('ServiceAbility onStart');
mMyStub = new MyStub("ServiceAbility-test");
// 在执行长时任务前，调用申请接口。
startContinuousTask();
processAsyncJobs();
},
onStop() {
console.info('ServiceAbility onStop');
},
onConnect(want) {
console.info('ServiceAbility onConnect');
return mMyStub;
},
onReconnect(want) {
console.info('ServiceAbility onReconnect');
},
onDisconnect() {
console.info('ServiceAbility onDisconnect');
},
onCommand(want, restart, startId) {
console.info('ServiceAbility onCommand');
}
};
function startContinuousTask() {
let wantAgentInfo: wantAgent.WantAgentInfo = {
// 点击通知后，将要执行的动作列表
wants: [
{
bundleName: "com.example.myapplication",
abilityName: "com.example.myapplication.MainAbility"
}
],
// 点击通知后，动作类型
operationType: wantAgent.OperationType.START_ABILITY,
// 使用者自定义的一个私有值
requestCode: 0,
// 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: WantAgent) => {
backgroundTaskManager.startBackgroundRunning(featureAbility.getContext(),
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err: BusinessError) => {
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) => {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
});
}
async function processAsyncJobs() {
// 此处执行具体的长时任务。
// 长时任务执行完，调用取消接口，释放资源。
stopContinuousTask();
}
let mMyStub: MyStub;
class MyStub extends rpc.RemoteObject {
constructor(des) {
if (typeof des === 'string') {
super(des);
} else {
return null;
}
}
onRemoteRequest(code, data, reply, option) {
console.log('ServiceAbility onRemoteRequest called');
// code 的具体含义用户自定义
if (code === 1) {
// 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) {
// 接收到取消长时任务的请求码
stopContinuousTask();
} else {
console.log('ServiceAbility unknown request code');
}
return true;
}
}
export default {
onStart(want) {
console.info('ServiceAbility onStart');
mMyStub = new MyStub("ServiceAbility-test");
// 在执行长时任务前，调用申请接口。
startContinuousTask();
processAsyncJobs();
},
onStop() {
console.info('ServiceAbility onStop');
},
onConnect(want) {
console.info('ServiceAbility onConnect');
return mMyStub;
},
onReconnect(want) {
console.info('ServiceAbility onReconnect');
},
onDisconnect() {
console.info('ServiceAbility onDisconnect');
},
onCommand(want, restart, startId) {
console.info('ServiceAbility onCommand');
}
};
```
......
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