The app crashes when using the "Delete" feature when deleting all images in the "LauncherActivity" menu

[ahyar92]

Expected behavior

Supposedly, when I use the delete feature to delete all images in the LauncherActivity menu, the app will not crash.

Actual behavior

When I go to the "LauncherActivity" menu and use the delete feature to delete all the images on the page, and when I continue to use the delete feature until all the images have been deleted, the application suddenly crashes.

How to reproduce

1. Install and open the app
2. Go to the "LauncherActivity" menu
3. Next use the delete feature and delete all images, continue to use the delete feature do not stop until the image all on the page is erased, then you will see the application will crash.

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• Device: Xiaomi Redmi 4X
• Operating system: Marshmallow, 6.0.1 mmb29m (CPU: Octa-core Max 1.9 GHz, RAM: 2 GB)
• Application Version: 1.7.0

Recording Of The Bug

Logcat

05-23 23:41:56.457 11483 11483 E AndroidRuntime: Process: com.marshalchen.ultimaterecyclerview.demo, PID: 11483
05-23 23:41:56.457 11483 11483 E AndroidRuntime: java.lang.IllegalStateException: Added View has RecyclerView as parent but view is not a real child. Unfiltered index:0
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:7048)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7012)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7000)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1428)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:3211)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3067)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:598)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at com.android.internal.policy.DecorView.onLayout(DecorView.java:730)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.View.layout(View.java:17663)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewGroup.layout(ViewGroup.java:5577)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2388)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2110)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1296)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6401)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:876)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.Choreographer.doCallbacks(Choreographer.java:688)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.Choreographer.doFrame(Choreographer.java:623)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:862)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.os.Handler.handleCallback(Handler.java:754)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:95)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:163)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:6361)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
05-23 23:41:56.457 11483 11483 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
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