Android WorkManager-CoroutineWorker : Overriding coroutineContext is deprecated

当用户再次上线时，我使用WorkManager 2.2.0版启动Coroutines API调用。

In the example by Google，如果我想将CoroutineWorker的线程从默认(Dispatchers.Default)更改为Dispatchers.IO，那么我只需要覆盖val coroutineContext即可，例如:

class CoroutineDownloadWorker(context: Context, params: WorkerParameters) : CoroutineWorker(context, params) {

    override val coroutineContext = Dispatchers.IO

    override suspend fun doWork(): Result = coroutineScope {
         // do some work here and return a Result
    }
}

但是Android Studio和the Docs告诉我，不赞成使用覆盖的coroutineContext:



我缺少什么？如何解决此问题？

最佳答案

您的问题的答案在发行说明中:



https://developer.android.com/jetpack/androidx/releases/work#2.1.0-alpha01

来源中也有一个答案:

/**
 * The coroutine context on which [doWork] will run. By default, this is [Dispatchers.Default].
 */
@Deprecated(message = "use withContext(...) inside doWork() instead.")
open val coroutineContext = Dispatchers.Default

因此，您可以执行以下操作:
override suspend fun doWork(): Result = withContext(Dispatchers.IO) { ...