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RecyclerView$ViewHolder.shouldIgnore()' on a null object reference

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lihaoliangGz commented

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'boolean androidx.recyclerview.widget.RecyclerView$d0.shouldIgnore()' on a null object reference
at androidx.recyclerview.widget.RecyclerView.findMinMaxChildLayoutPositions (RecyclerView.java)
at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep1 (RecyclerView.java:74)
at androidx.recyclerview.widget.RecyclerView.dispatchLayout (RecyclerView.java:52)
at androidx.recyclerview.widget.RecyclerView.onLayout (RecyclerView.java:8)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at androidx.viewpager2.widget.ViewPager2.onLayout (ViewPager2.java)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at androidx.recyclerview.widget.RecyclerView$LayoutManager.layoutDecoratedWithMargins (RecyclerView.java)
at androidx.recyclerview.widget.GridLayoutManager.layoutChunk (GridLayoutManager.java:567)
at androidx.recyclerview.widget.LinearLayoutManager.fill (LinearLayoutManager.java:54)
at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren (LinearLayoutManager.java:352)
at androidx.recyclerview.widget.GridLayoutManager.onLayoutChildren (GridLayoutManager.java:43)
at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2 (RecyclerView.java)
at androidx.recyclerview.widget.RecyclerView.dispatchLayout (RecyclerView.java:60)
at androidx.recyclerview.widget.RecyclerView.onLayout (RecyclerView.java:8)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1829)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1673)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1582)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at androidx.viewpager.widget.ViewPager.onLayout (ViewPager.java)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at androidx.viewpager.widget.ViewPager.onLayout (ViewPager.java)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild (HeaderScrollingViewBehavior.java:138)
at com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild (ViewOffsetBehavior.java)
at com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior.onLayoutChild (AppBarLayout.java)
at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout (CoordinatorLayout.java:43)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at androidx.constraintlayout.widget.ConstraintLayout.onLayout (ConstraintLayout.java)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1829)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1673)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1582)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1829)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1673)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1582)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
at android.widget.FrameLayout.onLayout (FrameLayout.java:270)
at com.android.internal.policy.DecorView.onLayout (DecorView.java:1099)
at android.view.View.layout (View.java:23750)
at android.view.ViewGroup.layout (ViewGroup.java:7277)
at android.view.ViewRootImpl.performLayout (ViewRootImpl.java:3709)
at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:3161)
at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:2222)
at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:9123)
at android.view.Choreographer$CallbackRecord.run (Choreographer.java:999)
at android.view.Choreographer.doCallbacks (Choreographer.java:797)
at android.view.Choreographer.doFrame (Choreographer.java:732)
at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:984)
at android.os.Handler.handleCallback (Handler.java:883)
at android.os.Handler.dispatchMessage (Handler.java:100)
at android.os.Looper.loop (Looper.java:237)
at android.app.ActivityThread.main (ActivityThread.java:8167)
at java.lang.reflect.Method.invoke (Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:496)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1100)