android - kotlin.coroutines.intrinsics.CoroutineSingletons 不能转换为 retrofit2.Response

Question

所以我使用协程改造，并在服务中声明了一个方法:

@GET("notifications")
    suspend fun getNotificationsAsync(@QueryMap paramsHashMap:HashMap<String,String>): Response<JsonObject>

在 repo 中:

suspend inline fun <reified T> notificationApiForPagingAsync(hashMapParams: HashMap<String,String>, onPrepare:()->Unit, onSuccess:(list:List<T>)->Unit, onError:(errorMessage:String)->Unit){
// crashing on below line
        val response=notificationService.getNotificationsAsync(hashMapParams)

        safeApiCallForPaging(response,onPrepare = onPrepare
            , onSuccess = {
                val listOfNotification=it.data?.fromJsonTo<List<Notification>>("notifications")?: emptyList()
                onSuccess(listOfNotification as @kotlin.ParameterName(name = "list") List<T>)
            }, onError = onError)
    }

然后像这样从 DataSource 调用:

coroutineScope.launch(Dispatchers.IO) {
                makeLoadAfter(params, callback) // notificationApiForPagingAsync of repo will be called from here
        }

它给出了以下错误:

AndroidRuntime: FATAL EXCEPTION: DefaultDispatcher-worker-1
Process: com.package.name.dev, PID: 20173
java.lang.ClassCastException: kotlin.coroutines.intrinsics.CoroutineSingletons cannot be cast to retrofit2.Response
at com.package.name.notification.NewNotificationViewModel$configurePaging$1.invoke(NewNotificationViewModel.kt:53)
at com.package.name.notification.NewNotificationViewModel$configurePaging$1.invoke(NewNotificationViewModel.kt:15)
at com.package.name.common.paging.GenericDataSource.makeLoadAfter(GenericDataSource.kt:85)
at com.package.name.common.paging.GenericDataSource$loadAfter$1.invokeSuspend(GenericDataSource.kt:32)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:241)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594)
at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740)
E/AndroidRuntime: FATAL EXCEPTION: DefaultDispatcher-worker-2
Process: com.package.name.dev, PID: 20173
kotlinx.coroutines.CoroutinesInternalError: Fatal exception in coroutines machinery for DispatchedContinuation[LimitingDispatcher@53edd6d[dispatcher = DefaultDispatcher], Continuation at com.package.name.common.paging.GenericDataSource$loadAfter$1.invokeSuspend(GenericDataSource.kt:32)@a30868f]. Please read KDoc to 'handleFatalException' method and report this incident to maintainers
at kotlinx.coroutines.DispatchedTask.handleFatalException$kotlinx_coroutines_core(Dispatched.kt:278)
at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:249)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594)
at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740)
Caused by: java.lang.IllegalStateException: Job StandaloneCoroutine{Cancelling}@d4d1184 is already complete or completing, but is being completed with CompletedExceptionally[kotlinx.coroutines.JobCancellationException: StandaloneCoroutine is cancelling; job=StandaloneCoroutine{Cancelling}@d4d1184]
at kotlinx.coroutines.JobSupport.makeCompletingOnce$kotlinx_coroutines_core(JobSupport.kt:788)
at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:111)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:334)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594) 
at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60) 
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740) 
Caused by: kotlinx.coroutines.JobCancellationException: StandaloneCoroutine is cancelling; job=StandaloneCoroutine{Cancelling}@d4d1184
Caused by: java.lang.ClassCastException: kotlin.coroutines.intrinsics.CoroutineSingletons cannot be cast to retrofit2.Response
at com.package.name.notification.NewNotificationViewModel$configurePaging$1.invoke(NewNotificationViewModel.kt:53)
at com.package.name.notification.NewNotificationViewModel$configurePaging$1.invoke(NewNotificationViewModel.kt:15)
at com.package.name.common.paging.GenericDataSource.makeLoadAfter(GenericDataSource.kt:85)
at com.package.name.common.paging.GenericDataSource$loadAfter$1.invokeSuspend(GenericDataSource.kt:32)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:241)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594)
at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740)

这里要考虑的事情:

1. 在 DataSource 中，我创建了一个单独的范围，也尝试使用 GlobalScope 和 viewModelScope 但得到相同的异常。
2. 但如果我直接从 ViewModel 而不是 DataSource 调用这个 API，它就可以正常工作。
3. 我目前使用的kotlin版本是:1.3.61

如果需要更多代码，请告诉我。

Answer 1

地址为 here .我让它工作的唯一方法是从我暂停的函数中删除 inline 和 crossinline。