android studio workmanager 每天在特定时间一次

发布于 2025-01-16 02:11:17 字数 191 浏览 1 评论 0原文

我正在尝试制作一个应用程序，每天发出一次网络请求，然后向工作管理器推送通知。
现在，我成功地完成了除了工作管理器调度部分之外的所有事情。
我希望它每天早上 8:00 发生一次，但我不知道如何进行。
目前我正在使用 oneTimeWorkRequest，但如果有更好的选择，我会更改它......
那么您认为解决我的问题的最佳方案是什么？

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生寂 2025-01-23 02:11:17

// 在 onCreate 中你只需调用 startWork();您可以根据需要更改 createConstraints() 中的属性

   private fun createConstraints() = Constraints.Builder()
    .setRequiredNetworkType(NetworkType.NOT_REQUIRED)
    .setRequiresCharging(false)
    .setRequiresBatteryNotLow(true)
    .build()


private fun createWOrkRequest() = PeriodicWorkRequestBuilder<NotifyWorker>(24, TimeUnit.HOURS)
    .setConstraints(createConstraints())
    .setInitialDelay(delay, TimeUnit.MILLISECONDS)

    .build()

private val delay = //TODO - here you have to calculate delay in order to start Worker at desired time. You can

//计算从现在到 8 点之间的时间量（毫秒）

private fun startWork(){
    WorkManager.getInstance(this)
        .enqueueUniquePeriodicWork(
            "Some-Unique-Name",
            ExistingPeriodicWorkPolicy.KEEP,
            createWOrkRequest()
        )
}

在 NotifyWorker 类中您调用 -sendNotification()

class NotifyWorker(context: Context, workerParams: WorkerParameters) : Worker(context, workerParams) {

override fun doWork(): Result {
    sendNotification()
    return Result.success()
}

private fun sendNotification(){
 // Here you create notification
}
}

这是一种方法，老式方法是使用 AlarmManagers 和 BroadcastReceiver()...

// In onCreate you just call startWork(); you can change attributes in createConstraints() as you want

   private fun createConstraints() = Constraints.Builder()
    .setRequiredNetworkType(NetworkType.NOT_REQUIRED)
    .setRequiresCharging(false)
    .setRequiresBatteryNotLow(true)
    .build()


private fun createWOrkRequest() = PeriodicWorkRequestBuilder<NotifyWorker>(24, TimeUnit.HOURS)
    .setConstraints(createConstraints())
    .setInitialDelay(delay, TimeUnit.MILLISECONDS)

    .build()

private val delay = //TODO - here you have to calculate delay in order to start Worker at desired time. You can

//calculate amount of time (milliseconds) between now and 8 hours 'o clock

private fun startWork(){
    WorkManager.getInstance(this)
        .enqueueUniquePeriodicWork(
            "Some-Unique-Name",
            ExistingPeriodicWorkPolicy.KEEP,
            createWOrkRequest()
        )
}

Inside class NotifyWorker you call -sendNotification()

class NotifyWorker(context: Context, workerParams: WorkerParameters) : Worker(context, workerParams) {

override fun doWork(): Result {
    sendNotification()
    return Result.success()
}

private fun sendNotification(){
 // Here you create notification
}
}

That is one way to do it, old-fashioned way is to use AlarmManagers and BroadcastReceiver()...

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