问题描述
限时送ChatGPT账号..做一点危险风格问答 在这里.
我有一些工作有时需要以加速运行,如WorkManager
2.7.0 版:
I have some work I sometimes need to run as expedited as described in the version 2.7.0 of WorkManager
:
val constraints = Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED).build()
val oneTimeWorkRequest = OneTimeWorkRequest.Builder(MyWorker::class.java)
.setInitialDelay(2, TimeUnit.SECONDS)
.setExpedited(OutOfQuotaPolicy.RUN_AS_NON_EXPEDITED_WORK_REQUEST)
.setConstraints(constraints).build()
WorkManager.getInstance(context).enqueueUniqueWork("my-identifier", ExistingWorkPolicy.REPLACE, oneTimeWorkRequest)
我相信代码在 Android 12/S 上运行得很好,但是当作业在 Android 11 上运行时,我收到以下错误:
I believe the code ran just fine on Android 12/S, but when the job is run on Android 11 I get the following error:
E/WM-WorkerWrapper: Work [ id=<UUID>, tags={ [WorkerTag] } ] failed because it threw an exception/error
java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: java.lang.IllegalStateException: Expedited WorkRequests require a ListenableWorker to provide an implementation for `getForegroundInfoAsync()`
at androidx.work.impl.utils.futures.AbstractFuture.getDoneValue(AbstractFuture.java:516)
at androidx.work.impl.utils.futures.AbstractFuture.get(AbstractFuture.java:475)
at androidx.work.impl.WorkerWrapper$2.run(WorkerWrapper.java:311)
at androidx.work.impl.utils.SerialExecutor$Task.run(SerialExecutor.java:91)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
我需要做什么?
推荐答案
ListenableWorker.getForegroundInfoAsync()
的文档说明了这一点:
The documentation for ListenableWorker.getForegroundInfoAsync()
states this:
在 Android S 之前,WorkManager 代表您管理和运行前台服务以执行 WorkRequest,显示 ForegroundInfo 中提供的通知.要随后更新此通知,应用程序可以使用 NotificationManager.
Prior to Android S, WorkManager manages and runs a foreground service on your behalf to execute the WorkRequest, showing the notification provided in the ForegroundInfo. To update this notification subsequently, the application can use NotificationManager.
从 Android S 及更高版本开始,WorkManager 使用即时作业管理此 WorkRequest.
Starting in Android S and above, WorkManager manages this WorkRequest using an immediate job.
因此在扩展 ListenableWorker
的类中,有必要覆盖 getForegroundInfoAsync()
.
So in the class extending ListenableWorker
it's necessary to override getForegroundInfoAsync()
.
自己直接覆盖该方法的替代方法是使用例如 CoroutineWorker
:
An alternative to directly overriding that method yourself is to use for example CoroutineWorker
:
class MyWorker(val context: Context, workerParams: WorkerParameters) : CoroutineWorker(context, workerParams) {
override suspend fun doWork(): Result {
// TODO: Do work here
return Result.success()
}
override suspend fun getForegroundInfo(): ForegroundInfo {
val notification = NotificationCompat.Builder(context, "some-channel-id")
.setContentIntent(PendingIntent.getActivity(context, 0, Intent(context, MainActivity::class.java), Constants.PENDING_INTENT_FLAG_IMMUTABLE))
.setSmallIcon(R.drawable.ic_refresh_24dp)
.setOngoing(true)
.setAutoCancel(true)
.setOnlyAlertOnce(true)
.setPriority(NotificationCompat.PRIORITY_MIN)
.setContentTitle(context.getString(R.string.app_name))
.setLocalOnly(true)
.setVisibility(NotificationCompat.VISIBILITY_SECRET)
.setContentText("Updating widget")
.build()
return ForegroundInfo(1337, notification)
}
}
(挂起 Intent 标志的常量实际上只是 val PENDING_INTENT_FLAG_MUTABLE = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_MUTABLE else 0
使事情与Android 12/S 及更早版本.)
(That constant for the pending intent flag is really just val PENDING_INTENT_FLAG_MUTABLE = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_MUTABLE else 0
to make stuff work with both Android 12/S and earlier.)
这篇关于Expedited WorkRequests 需要一个 ListenableWorker 来提供 getForegroundInfoAsync() 的实现的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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