Crash app when drag and drop item in listview

[khiemvu]

Hi all,

I use listviewanimations in my app, and sometime app force close when i drag and drop item in listview

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setVisibility(int)' on a null object reference at com.nhaarman.listviewanimations.itemmanipulation.dragdrop.DragAndDropHandler$LSwitchViewAnimator$AnimateSwitchViewOnPreDrawListener.onPreDraw(DragAndDropHandler.java:588) at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:921) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2214) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1230) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6748) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777) at android.view.Choreographer.doCallbacks(Choreographer.java:590) at android.view.Choreographer.doFrame(Choreographer.java:560) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:6117) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

I don't understand why althought at line 588 in DragAndDropHandler.java really check not null before

[Sonalboraste]

I am also facing the same problem while doing drag and drop operation in list view. Problem in DragAndDropHandler.java at line #588