IssueTracker

1. stack for remoteKeys.nextKey gets null

    06-17 14:48:03.981 18015-18015/com.example.android.codelabs.paging E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.android.codelabs.paging, PID: 18015
    java.io.InvalidObjectException: Remote key should not be null for APPEND
        at com.example.android.codelabs.paging.data.GithubRemoteMediator.load(GithubRemoteMediator.kt:68)
        at com.example.android.codelabs.paging.data.GithubRemoteMediator$load$1.invokeSuspend(GithubRemoteMediator.kt)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:7325)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)  

2. I have checked loadStateFlow / listener logic and changed it to listen only remote errors using loadState.mediator.refersh. But still, in offline mode application shows empty list. I have also removed the loadStateFlow / listener but still, it's not working in offline mode. It is not fetching data available in databa.

Project: platform/frameworks/support
Branch: androidx-master-dev

commit b5e4aa03a057d56a55ffc6abf250ce8a34e5071b
Author: Dustin Lam <dustinlam@google.com>
Date:   Wed Jun 17 00:50:31 2020

    Allow local REFRESH even if remote REFRESH fails
   
    Bug: 158892717
    Test: ./gradlew paging:paging-common:test
    Change-Id: I38b1b1784af935cfbd8b937d9f4ab372f59619ed

M       paging/common/src/main/kotlin/androidx/paging/PageFetcherSnapshot.kt
M       paging/common/src/main/kotlin/androidx/paging/PagerState.kt
M       paging/common/src/main/kotlin/androidx/paging/ViewportHint.kt
M       paging/common/src/test/kotlin/androidx/paging/CachingTest.kt
M       paging/common/src/test/kotlin/androidx/paging/PageFetcherSnapshotTest.kt
M       paging/common/src/test/kotlin/androidx/paging/TestPagingSourceExt.kt
M       testutils/testutils-paging/src/main/java/androidx/paging/TestPagingSource.kt

https://android-review.googlesource.com/1341068