java.lang.ClassCastException: androidx.work.impl.workers.ConstraintTrackingWorker cannot be cast to androidx.work.Worker at java.lang.Class.asSubclass(Class.java:1486) at com.mpower.android.lpincrm.workers.DaggerWorkerFactory.createWorker(DaggerWorkerFactory.kt:38) at androidx.work.WorkerFactory.createWorkerWithDefaultFallback(WorkerFactory.java:83) at androidx.work.impl.WorkerWrapper.runWorker(WorkerWrapper.java:242) at androidx.work.impl.WorkerWrapper.run(WorkerWrapper.java:136) at androidx.work.impl.utils.SerialExecutor$Task.run(SerialExecutor.java:91) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) at java.lang.Thread.run(Thread.java:818)
Error is occurring on the first line of 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
}
My worker version:
def work_version = "2.3.4"
implementation "androidx.work:work-runtime:$work_version"
Your WorkerFactory incorrectly assumes that every ListenableWorker subclass created by the app is also a Worker subclass. It turns out that the WorkManager library contains some exceptions to this rule, which are used as internal implementation details.
The fix is to treat the passed worker classes as subclasses of ListenableWorker, not Worker.
val workerclass = Class.forName(workerClassName).asSubclass(ListenableWorker::class.java)