when adapter has no items adapter!!.items[1].item will crash with IndexOutOfBoundsException
This could happen e.g. when chat history is cleared.
error was:
Exception java.lang.IndexOutOfBoundsException: Index 1 out of bounds for length 0
at jdk.internal.util.Preconditions.outOfBounds (Preconditions.java:64)
at jdk.internal.util.Preconditions.outOfBoundsCheckIndex (Preconditions.java:70)
at jdk.internal.util.Preconditions.checkIndex (Preconditions.java:266)
at java.util.Objects.checkIndex (Objects.java:359)
at java.util.ArrayList.get (ArrayList.java:434)
at com.nextcloud.talk.chat.ChatActivity.processMessagesFromTheFuture (ChatActivity.kt:2666)
at com.nextcloud.talk.chat.ChatActivity.access$processMessagesFromTheFuture (ChatActivity.kt:209)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invokeSuspend (ChatActivity.kt:875)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invoke (Unknown Source:8)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invoke (Unknown Source:4)
at kotlinx.coroutines.flow.FlowKt__TransformKt$onEach$$inlined$unsafeTransform$1$2.emit (Emitters.kt:219)
at kotlinx.coroutines.flow.FlowKt__ErrorsKt$catchImpl$2.emit (Errors.kt:154)
at kotlinx.coroutines.flow.FlowKt__TransformKt$onEach$$inlined$unsafeTransform$1$2.emit (Emitters.kt:220)
at kotlinx.coroutines.flow.SharedFlowImpl.collect$suspendImpl (SharedFlow.kt:392)
at kotlinx.coroutines.flow.SharedFlowImpl$collect$1.invokeSuspend (Unknown Source:15)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith (ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run (DispatchedTask.kt:104)
at android.os.Handler.handleCallback (Handler.java:942)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loopOnce (Looper.java:201)
at android.os.Looper.loop (Looper.java:288)
at android.app.ActivityThread.main (ActivityThread.java:7932)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:942)
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
When messages were sorted out in handleSystemMessages it can happen that the chatMessageList is empty. Because setUnreadMessageMarker accessed chatMessageList[0] this crashed.
This can happen e.g. when only a reaction to a chat message was made before opening the chat.
Exception java.lang.IndexOutOfBoundsException: Empty list doesn't contain element at index 0.
at kotlin.collections.EmptyList.get (Collections.kt:37)
at kotlin.collections.EmptyList.get (Collections.kt:25)
at com.nextcloud.talk.chat.ChatActivity.setUnreadMessageMarker (ChatActivity.kt:2691)
at com.nextcloud.talk.chat.ChatActivity.processMessagesFromTheFuture (ChatActivity.kt:2651)
at com.nextcloud.talk.chat.ChatActivity.access$processMessagesFromTheFuture (ChatActivity.kt:209)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invokeSuspend (ChatActivity.kt:875)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invoke (Unknown Source:8)
at com.nextcloud.talk.chat.ChatActivity$initObservers$12$1.invoke (Unknown Source:4)
at kotlinx.coroutines.flow.FlowKt__TransformKt$onEach$$inlined$unsafeTransform$1$2.emit (Emitters.kt:219)
at kotlinx.coroutines.flow.FlowKt__ErrorsKt$catchImpl$2.emit (Errors.kt:154)
at kotlinx.coroutines.flow.FlowKt__TransformKt$onEach$$inlined$unsafeTransform$1$2.emit (Emitters.kt:220)
at kotlinx.coroutines.flow.SharedFlowImpl.collect$suspendImpl (SharedFlow.kt:392)
at kotlinx.coroutines.flow.SharedFlowImpl$collect$1.invokeSuspend (Unknown Source:15)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith (ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run (DispatchedTask.kt:104)
at android.os.Handler.handleCallback (Handler.java:942)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loopOnce (Looper.java:226)
at android.os.Looper.loop (Looper.java:313)
at android.app.ActivityThread.main (ActivityThread.java:8762)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:604)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1067)
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
currentConversation was not yet initialized in ChatActivity.
In the future this may be better handled via StateFlows. For now it's solved via arguments.
Without the fix, this NPE appeared:
Exception java.lang.RuntimeException:
at android.app.ActivityThread.performResumeActivity (ActivityThread.java:4768)
at android.app.ActivityThread.handleResumeActivity (ActivityThread.java:4801)
at android.app.servertransaction.ResumeActivityItem.execute (ResumeActivityItem.java:54)
at android.app.servertransaction.ActivityTransactionItem.execute (ActivityTransactionItem.java:45)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState (TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2215)
at android.os.Handler.dispatchMessage (Handler.java:106)
at android.os.Looper.loopOnce (Looper.java:346)
at android.os.Looper.loop (Looper.java:475)
at android.app.ActivityThread.main (ActivityThread.java:7889)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:548)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1009)
Caused by java.lang.NullPointerException:
at com.nextcloud.talk.chat.MessageInputFragment.onResume (MessageInputFragment.kt:146)
at androidx.fragment.app.Fragment.performResume (Fragment.java:3180)
at androidx.fragment.app.FragmentStateManager.resume (FragmentStateManager.java:606)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState (FragmentStateManager.java:285)
at androidx.fragment.app.FragmentStore.moveToExpectedState (FragmentStore.java:113)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1433)
at androidx.fragment.app.FragmentManager.dispatchStateChange (FragmentManager.java:2977)
at androidx.fragment.app.FragmentManager.dispatchResume (FragmentManager.java:2909)
at androidx.fragment.app.FragmentController.dispatchResume (FragmentController.java:285)
at androidx.fragment.app.FragmentActivity.onResumeFragments (FragmentActivity.java:334)
at androidx.fragment.app.FragmentActivity.onPostResume (FragmentActivity.java:323)
at androidx.appcompat.app.AppCompatActivity.onPostResume (AppCompatActivity.java:245)
at android.app.Activity.performResume (Activity.java:8215)
at android.app.ActivityThread.performResumeActivity (ActivityThread.java:4758)
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
