It has been created to make possible construction of any lists with XML layouts as an item which can be customized. It is an improvement on both of them and can be found in the latest v-7 support packages. This occurs when RecyclerView's change animation is enabled and corresponding RecyclerView.Adapter methods notifyItemInserted(), notifyItemRemoved(), etc., are called to indicate that an isolated change was made to the list managed by the adapter (as opposed to a wholesale change, as indicated by notifyDataSetChanged()). RecyclerView is a ViewGroup added to the android studio as a successor of the GridView and ListView. Catch: The Catch block will handle the exception that occurred in the Try block smoothly (showing a toast msg on. Try: The Try block executes a piece of code that is likely to crash or a place where the exception occurs. Several developers have reported seeing the following stack trace since upgrading to Android Support 23.2.0: : Attempt to invoke virtual method 'boolean 7.widget.RecyclerView$ViewHolder.shouldIgnore()' on a null object referenceĪt 7.(RecyclerView.java:2913)Īt 7.(RecyclerView.java:1445)Īt 7.$400(RecyclerView.java:144)Īt 7.widget.RecyclerView$1.run(RecyclerView.java:282)Īt $n(Choreographer.java:821)Īt (Choreographer.java:606)Īt (Choreographer.java:575)Īt $n(Choreographer.java:807)Īt android.os.Handler.handleCallback(Handler.java:739)Īt android.os.Handler.dispatchMessage(Handler.java:95)Īt android.os.Looper.loop(Looper.java:145)Īt (ActivityThread.java:6895)Īt .invoke(Native Method)Īt .invoke(Method.java:372)Īt .ZygoteInit$n(ZygoteInit.java:1404)Īt .ZygoteInit.main(ZygoteInit.java:1199) To Handle the NullPointerException smoothly without making the app crash, we use the Try Catch Block in Android.
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