HarmonyOS 鸿蒙Next如何配置长时任务通知？

楼主您好，可以参考下面的demo：

参考如下步骤

1.
```json
"requestPermissions": [{
'name': 'ohos.permission.KEEP_BACKGROUND_RUNNING'
}],

1. 修改一下abilities

"abilities": [
{
"backgroundModes": [
// 长时任务类型的配置项
"audioRecording"
],
"skills": [
// 必填项：申请长时任务时entities和actions值
{
"entities": [
"entity.system.home"
],
"actions": [
"action.system.home"
]
}
// 可选项：添加deeplink、applink等跳转功能
/*
{
"entities": [
"test"
],
"actions": [
"test"
],
"uris": [
{
"scheme": "test"
}
]
}
*/
],

3.Index.ets demo里注意一下want是否对的上

wants: [
{
bundleName: "com.example.changshirenwu",
abilityName: "EntryAbility"
}
],

import { WantAgent, wantAgent } from '[@kit](/user/kit).AbilityKit';
import { BusinessError } from '[@kit](/user/kit).BasicServicesKit';
import { backgroundTaskManager } from '[@kit](/user/kit).BackgroundTasksKit';

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index {
[@State](/user/State) message: string = 'ContinuousTask';
// 通过getContext方法，来获取page所在的UIAbility上下文。
private context: Context = getContext(this);

startContinuousTask() {
let wantAgentInfo: wantAgent.WantAgentInfo = {
// 点击通知后，将要执行的动作列表
// 添加需要被拉起应用的bundleName和abilityName
wants: [
{
bundleName: "com.example.changshirenwu",
abilityName: "EntryAbility"
}
],
// 指定点击通知栏消息后的动作是拉起ability
actionType: 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
actionFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
};
// 通过wantAgent模块下getWantAgent方法获取WantAgent对象
wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
backgroundTaskManager.startBackgroundRunning(this.context,
backgroundTaskManager.BackgroundMode.AUDIO_RECORDING, wantAgentObj).then(() => {
// 此处执行具体的长时任务逻辑，如放音等。
console.info(`Succeeded in operationing startBackgroundRunning.`);
}).catch((err: BusinessError) => {
console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
});
});
}

stopContinuousTask() {
backgroundTaskManager.stopBackgroundRunning(this.context).then(() => {
console.info(`Succeeded in operationing stopBackgroundRunning.`);
}).catch((err: BusinessError) => {
console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
});
}

build() {
Row() {
Column() {
Text("Index")
.fontSize(50)
.fontWeight(FontWeight.Bold)
Button() {
Text('申请长时任务').fontSize(25).fontWeight(FontWeight.Bold)
}
.type(ButtonType.Capsule)
.margin({ top: 10 })
.backgroundColor('#0D9FFB')
.width(250)
.height(40)
.onClick(() => {
// 通过按钮申请长时任务
this.startContinuousTask();
})
Button() {
Text('取消长时任务').fontSize(25).fontWeight(FontWeight.Bold)
}
.type(ButtonType.Capsule)
.margin({ top: 10 })
.backgroundColor('#0D9FFB')
.width(250)
.height(40)
.onClick(() => {
// 此处结束具体的长时任务的执行
// 通过按钮取消长时任务
this.stopContinuousTask();
})
}
.width('100%')
}
.height('100%')
}
}