java.lang.nullpointerexception android studio recyclerview

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. List of Native Express ads and MenuItems that populate the RecyclerView. RecyclerView is a ViewGroup added to the android studio as a successor of the GridView and ListView. The RecyclerView that holds and displays Native Express ads and menu items.

Private static final int NATIVE_EXPRESS_AD_HEIGHT = 150 Private GridLayoutManager mLayoutManager Public static final int ITEMS_PER_AD = 8

It is possible to do this with StaggeredGrid, but I found it simpler to use a GridLayoutManager instead: // A Native Express ad is placed in every nth position in the RecyclerView. 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()).One solution here is to vary your spanCount depending on the item. 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)

Java.lang.nullpointerexception android studio recyclerview