WorkManager beginUniqueWork无法按预期工作 [英] WorkManager beginUniqueWork doesn't work as expected

问题描述

当前，我正在使用WorkManager 1.0.0-alpha02.

Currently, I'm using WorkManager 1.0.0-alpha02.

def work_version = "1.0.0-alpha02"
implementation "android.arch.work:work-runtime:$work_version" // use -ktx for Kotlin
// optional - Firebase JobDispatcher support
implementation "android.arch.work:work-firebase:$work_version"

在应用程序退出时，使用以下代码执行后台工作程序没有问题.

I have no problem to execute background worker, by using the following code, when the app quit.

OneTimeWorkRequest oneTimeWorkRequest =
        new OneTimeWorkRequest.Builder(SyncWorker.class)
                .addTag(SyncWorker.TAG)
                .build();

WorkManager workManager = WorkManager.getInstance();

workManager.enqueue(oneTimeWorkRequest);

---

自那时以来，我想避免同时运行多个 SyncWorker .我尝试使用

OneTimeWorkRequest oneTimeWorkRequest =
        new OneTimeWorkRequest.Builder(SyncWorker.class)
                .addTag(SyncWorker.TAG)
                .build();

WorkManager workManager = WorkManager.getInstance();

workManager.beginUniqueWork(
        SyncWorker.TAG,
        ExistingWorkPolicy.REPLACE,
        oneTimeWorkRequest
);

SyncWorker 完全没有运行.

我可以知道我错过了哪一步吗?谢谢.

May I know what step I had missed out? Thank you.

推荐答案

beginUniqueWork()返回

beginUniqueWork() returns a WorkContinuation object. You need to call enqueue on that WorkContinuation to actually enqueue it with WorkManager:

workManager.beginUniqueWork(
    SyncWorker.TAG,
    ExistingWorkPolicy.REPLACE,
    oneTimeWorkRequest
).enqueue();

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