java.lang.Throwable: addInArray in Adapter

Question

Here is the log, this log shows as many times as the itemView's number. but my app is still running normally.

ViewGroup: addInArray been called, this = android.support.v7.widget.RecyclerView{42c4eeb0 VFED.... .F....ID 0,0-540,876 #7f0e0160 app:id/product_update_rec_view}call stack = java.lang.Throwable: addInArray at android.view.ViewGroup.addInArray(ViewGroup.java:3786) at android.view.ViewGroup.addViewInner(ViewGroup.java:3740) at android.view.ViewGroup.addView(ViewGroup.java:3564) at android.view.ViewGroup.addView(ViewGroup.java:3509) at android.support.v7.widget.RecyclerView$5.addView(RecyclerView.java:585) at android.support.v7.widget.ChildHelper.addView(ChildHelper.java:107) at android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:6249) at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:6207) at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:6195) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1384) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1333) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:562) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2900) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3071) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1160) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1160) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1037) at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:747) at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42) at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1133) at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:760) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:515) at android.widget.FrameLayout.onLayout(FrameLayout.java:450) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1888) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1742) at android.widget.LinearLayout.onLayout(LinearLayout.java:1651) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:515) at android.widget.FrameLayout.onLayout(FrameLayout.java:450) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1888) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1742) at android.widget.LinearLayout.onLayout(LinearLayout.java:1651) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:515) at android.widget.FrameLayout.onLayout(FrameLayout.java:450) at android.view.View.layout(View.java:15132) at android.view.ViewGroup.layout(ViewGroup.java:4862) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2323) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2029) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1192) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6231) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:788) at android.view.Choreographer.doCallbacks(Choreographer.java:591) at android.view.Choreographer.doFr

Answer 1

This exception will happen when you try to use List<View> in your list's adapter.

It because the views in arraylist will still have a reference, and therefore not be recycled by garbage collection, and this may cause OOM. But the convertView is built for reusability, so it may not crash so easily.