Exception java.lang.NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference

[ali-imran]

Exception java.lang.NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4082)
at android.view.View.draw (View.java:19323)
at android.view.View.buildDrawingCacheImpl (View.java:18540)
at android.view.View.buildDrawingCache (View.java:18396)
at android.view.View.draw (View.java:19022)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19323)
at androidx.viewpager.widget.ViewPager.draw (ViewPager.java:2426)
at android.view.View.draw (View.java:19179)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19177)
at android.view.ViewGroup.drawChild (ViewGroup.java:4297)
at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4083)
at android.view.View.draw (View.java:19323)
at com.android.internal.policy.DecorView.draw (DecorView.java:789)
at com.github.mmin18.widget.RealtimeBlurView$1.onPreDraw (RealtimeBlurView.java:265)
at android.view.ViewTreeObserver.dispatchOnPreDraw (ViewTreeObserver.java:977)
at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:2446)
at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1438)
at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:6982)
at android.view.Choreographer$CallbackRecord.run (Choreographer.java:913)
at android.view.Choreographer.doCallbacks (Choreographer.java:725)
at android.view.Choreographer.doFrame (Choreographer.java:660)
at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:899)
at android.os.Handler.handleCallback (Handler.java:790)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loop (Looper.java:164)
at android.app.ActivityThread.main (ActivityThread.java:6548)
at java.lang.reflect.Method.invoke (Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:857)