java.lang.NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference #6
Description
Whenever I click on "Next" button to show next sequence this error is logged:
java.lang.NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference
Stack trace:
java.lang.NullPointerException: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4289) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:686) at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:692) at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:801) at android.view.ViewRootImpl.draw(ViewRootImpl.java:3311) at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3115) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2484) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7183) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949) at android.view.Choreographer.doCallbacks(Choreographer.java:761) at android.view.Choreographer.doFrame(Choreographer.java:696) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I call the show function inside onResume():
override fun onResume() { super.onResume() showMainActivityShowcase() }
With these configurations:
val config = ShowcaseConfig(this) config.delay = 300 config.backgroundColor = resources.getColor(R.color.header_blue) config.dismissBackgroundColor = resources.getColor(R.color.header_red) config.renderOverNavigationBar = true
Then I call show():
sequence.show()
Lib version:
implementation 'com.github.spiddekauga:MaterialShowcaseView:2.0.0'