不是 Working/Not 在应用程序关闭时使用 WorkManager 安排作业

Question

当我们在收到 firebase 通知时使用 firebase 作业调度程序运行作业，没有其他方法可以运行接收到的旧通知上的代码，现在 WorkManager 在这里。当应用程序打开时它工作正常但当应用程序关闭时它不起作用，但是 firebase 作业调度器工作正常，我希望它使用 WorkManager API.

我尝试了以下方式，它是 100% 工作代码并使用 WorkManager 完成工作，但只有当应用程序打开时，我希望它在应用程序未打开时工作，我知道我们注册了一个服务对于清单中的 firebase 作业调度程序，但如何为 WorkManager -:)

我尝试了与作业调度程序相关的方法，但它们没有用，例如清单中的服务等...

public class BackgroundWorker 扩展了 ListenableWorker {

private static final ListenableFuture listenableFuture = null ;

/**
 * @param appContext   The application {@link Context}
 * @param workerParams Parameters to setup the internal state of this worker
 */

public BackgroundWorker(@NonNull Context appContext, @NonNull WorkerParameters workerParams) {
    super(appContext, workerParams);
}

@NonNull
@Override
public ListenableFuture<ListenableWorker.Result> startWork() {
    // Do your work here.

    // Return a ListenableFuture<>
    return listenableFuture;
}

@Override
public void onStopped() {
    // Cleanup because you are being stopped.
}

public void toast(String msg, Context applicationContext)
{
    Toast.makeText(applicationContext,msg,Toast.LENGTH_LONG).show();
}

}

public class MyFirebaseMessagingService 扩展了 FirebaseMessagingService {

private static final String TAG = "MyFirebaseMsgService";

/**
 * Called when message is received.
 *
 * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
 */
// [START receive_message]
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    sendNotification(remoteMessage.getData().get("body"),remoteMessage.getData().get("title"));


    scheduleJob();
}
/**
 * Called if InstanceID token is updated. This may occur if the security of
 * the previous token had been compromised. Note that this is called when the InstanceID token
 * is initially generated so this is where you would retrieve the token.
 */

/**
 * Schedule a job using workmanager.
 */

private void scheduleJob() {
    String unique_id = getRandomString(6);
    Data inputData = new Data.Builder()
            .putString("bulksmswebapi", unique_id)
            .build();
    // [START dispatch_job]

    Constraints constraints = new Constraints.Builder()
            // The Worker needs Network connectivity
            .setRequiredNetworkType(NetworkType.CONNECTED)
            // Needs the device to be charging
           // .setRequiresCharging(true)
            .build();
    OneTimeWorkRequest workRequest =
            // Tell which work to execute
            new OneTimeWorkRequest.Builder(BackgroundWorker.class)
                    // Sets the input data for the ListenableWorker
                    .setInputData(inputData)
                    // If you want to delay the start of work by 60 seconds
                    .setInitialDelay(1, TimeUnit.SECONDS)
                    // Set a backoff criteria to be used when retry-ing
                  //  .setBackoffCriteria(BackoffCriteria.EXPONENTIAL, 30000, TimeUnit.MILLISECONDS)
                    // Set additional constraints
                    .setConstraints(constraints)
                    .build();
    WorkManager.getInstance()
            // Use ExistingWorkPolicy.REPLACE to cancel and delete any existing pending
            // (uncompleted) work with the same unique name. Then, insert the newly-specified
            // work.
            .enqueueUniqueWork(unique_id, ExistingWorkPolicy.KEEP, workRequest);
    // [END dispatch_job]
}

}

Answer 1

你的工人代码什么都不做。您正在返回 null ListenableFuture，这意味着 WorkManager 无法执行任何操作。 onStartWork 也被明确标记为 @NonNull 所以我不确定你在那里做什么。您有一个从未执行过的方法 (toast)，因为您没有在任何地方调用它。

Answer 2

问题由我解决，问题的答案是扩展一个 Worker class 并且不要使用任何 Toast 或其他消息，然后它会正常工作。

不是 Working/Not 在应用程序关闭时使用 WorkManager 安排作业

Not Working/Not Scheduling Job using WorkManager When App is Closed

java

android

android-workmanager