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android - 在 Android 6.0 中使用 Dagger2 初始化 Worker 时应用程序不断崩溃

问题描述

java.lang.ClassCastException: androidx.work.impl.workers.ConstraintTrackingWorker 无法在 com.mpower.android.lpincrm.workers 的 java.lang.Class.asSubclass(Class.java:1486) 中转换为 androidx.work.Worker。 DaggerWorkerFactory.createWorker(DaggerWorkerFactory.kt:38) 在 androidx.work.WorkerFactory.createWorkerWithDefaultFallback(WorkerFactory.java:83) 在 androidx.work.impl.WorkerWrapper.runWorker(WorkerWrapper.java:242) 在 androidx.work.impl.WorkerWrapper .run(WorkerWrapper.java:136) 在 androidx.work.impl.utils.SerialExecutor$Task.run(SerialExecutor.java:91) 在 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 在 java。 util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 在 java.lang.Thread.run(Thread.java:818)

第一行发生错误createWorker()：

override fun createWorker(appContext: Context, workerClassName: String, workerParameters: WorkerParameters): ListenableWorker? {
        val workerclass = Class.forName(workerClassName).asSubclass(Worker::class.java)
        val constructor = workerclass.getDeclaredConstructor(Context::class.java, WorkerParameters::class.java)
        val instance = constructor.newInstance(appContext, workerParameters)


    when (instance) {
        is MetaWorker -> {
            instance.treatmentMetaRepository = foo
            instance.newsRepository = foo1
            instance.geoDataRepository = foo2
            instance.medicineMetaRepository = foo3
            instance.preferenceUtil = preferenceUtil
        }
        is NotificationSchedulerWorker -> {
            instance.notificationRepository = notification
        }
        is SyncWorker -> {
            instance.syncAPIs = syncAPI
            instance.registrationAPI = registrationAPI
            instance.preferenceUtil = preferenceUtil
            instance.treatmentRepository = treatmentRepository
            instance.medicineRepository = medicineRepository
            instance.medicineDetailsRepository = medicineDetailsRepository
            instance.collectionRepository = collectionRepository
            instance.newVisitRepository = newVisitRepository
            instance.dueReceiptRepository = dueReceiptRepository
            instance.transportationRepository = transportationRepository  
        }
    }
    return instance
}

我的工人版本：

def work_version = "2.3.4"
implementation "androidx.work:work-runtime:$work_version"

标签： androiddagger-2android-workmanager

解决方案

您WorkerFactory错误地假设ListenableWorker应用程序创建的每个子类也是一个Worker子类。事实证明，该WorkManager库包含此规则的一些例外情况，这些例外情况用作内部实现细节。

解决方法是将传递的工人类视为 的子类ListenableWorker，而不是Worker.

val workerclass = Class.forName(workerClassName).asSubclass(ListenableWorker::class.java)

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