06-27 16:49:50.463 E/AndroidRuntime(20889): FATAL EXCEPTION: main   
06-27 16:49:50.463 E/AndroidRuntime(20889): Process: a, PID: 20889   
06-27 16:49:50.463 E/AndroidRuntime(20889): java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView.java:2349)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onChanged(RecyclerView.java:4551)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyChanged(RecyclerView.java:10366)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$Adapter.notifyDataSetChanged(RecyclerView.java:6044)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at a.gui.adapters.TrackAdapters.QueueTrackAdapter$TrackViewHolder.onItemClear(QueueTrackAdapter.java:522)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at a.gui.adapters.swipedrag.SimpleItemTouchHelperCallback.clearView(SimpleItemTouchHelperCallback.java:124)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.helper.ItemTouchHelper.onChildViewDetachedFromWindow(ItemTouchHelper.java:876)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.dispatchChildDetached(RecyclerView.java:6234)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.access$1200(RecyclerView.java:151)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$5.removeViewAt(RecyclerView.java:651)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.ChildHelper.removeViewAt(ChildHelper.java:168)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$LayoutManager.removeViewAt(RecyclerView.java:7092)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$LayoutManager.scrapOrRecycleView(RecyclerView.java:7638)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView$LayoutManager.detachAndScrapAttachedViews(RecyclerView.java:7624)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:546)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at a.gui.activities.QueueActivity$WrapContentLinearLayoutManager.onLayoutChildren(QueueActivity.java:359)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1478)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.scrollByInternal(RecyclerView.java:1542)   
06-27 16:49:50.463 E/AndroidRuntime(20889): at android.support.v7.widget.RecyclerView.onTouchEvent(RecyclerView.java:2649)   
......   
......   
06-27 16:49:50.464 E/AndroidRuntime(20889): at android.os.Handler.handleCallback(Handler.java:836)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at android.os.Handler.dispatchMessage(Handler.java:103)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at android.os.Looper.loop(Looper.java:203)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at android.app.ActivityThread.main(ActivityThread.java:6347)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at java.lang.reflect.Method.invoke(Native Method)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)   
06-27 16:49:50.464 E/AndroidRuntime(20889): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)  

java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 6(offset:6).  
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3300)  
        at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3258)  
        at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1803)  
        at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1302)  
        at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1265)  
        at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1093)  
        at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:956)  
        at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:2715)  
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)  
        at android.view.Choreographer.doCallbacks(Choreographer.java:555)  
        at android.view.Choreographer.doFrame(Choreographer.java:524)  
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)  
        at android.os.Handler.handleCallback(Handler.java:615)  
        at android.os.Handler.dispatchMessage(Handler.java:92)  
        at android.os.Looper.loop(Looper.java:137)  
        at android.app.ActivityThread.main(ActivityThread.java:4921)  
        at java.lang.reflect.Method.invokeNative(Native Method)  
        at java.lang.reflect.Method.invoke(Method.java:511)  
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)  
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)  
        at dalvik.system.NativeStart.main(Native Method)  

public class WrapContentLinearLayoutManager extends LinearLayoutManager {  
    public WrapContentLinearLayoutManager(Context context) {  
        super(context);  
    }  
  
    public WrapContentLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {  
        super(context, orientation, reverseLayout);  
    }  
  
    public WrapContentLinearLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {  
        super(context, attrs, defStyleAttr, defStyleRes);  
    }  
  
    @Override  
    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {  
        try {  
            super.onLayoutChildren(recycler, state);  
        } catch (IndexOutOfBoundsException e) {  
            e.printStackTrace();  
        }  
    }  
}  

mRecyclerView.setLayoutManager(new WrapContentLinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));