FadeableViewPager OnPageChangeListener called before fragment views are restored after onRestoreInstanceState

[MFlisar]

If the activity is recreated I see following behaviour:

SwipeBlockableViewPager restores its state and calls onPageSelected of its page selected callback. Inside this callback I can't yet get the current fragment's views yet which I need to do to update the pages texts correctly...

I'm using the master build.

Code

My code looks like following:

@Override
public void onPageSelected(int position) {
    SimpleSlide.SimpleSlideFragment slide = ((SimpleSlide.SimpleSlideFragment) getItem(position));
    Long id = ((SimpleSlide.SimpleSlideFragment) getItem(position)).getSlideId();
    int intId = id.intValue();
    if (intId == R.string.setup_slide6_title) {
        updatePermissionStatePage(slide);
    }
}

private void updatePermissionStatePage(SimpleSlide.SimpleSlideFragment fragment) {
    boolean overlayPermission = Permission.DrawOverlay.isPermissionGranted();
	// THIS LINE CRASHES
    fragment.getTitleView().setText(overlayPermission ? R.string.setup_slide6_title : R.string.setup_slide5_title);
    fragment.getDescriptionView().setText(overlayPermission ? R.string.setup_slide6_text : 
}

Stacktrace

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(int)' on a null object reference
	at com.my.app.ui.activitiesandfragments.SetupActivity.a(SetupActivity.java:245)
	at com.my.app.ui.activitiesandfragments.SetupActivity.a(SetupActivity.java:203)
	at com.heinrichreimersoftware.materialintro.view.FadeableViewPager$OnPageChangeListenerWrapper.a(FadeableViewPager.java:99)
	at androidx.viewpager.widget.ViewPager.e(ViewPager.java:1947)
	at androidx.viewpager.widget.ViewPager.a(ViewPager.java:665)
	at androidx.viewpager.widget.ViewPager.a(ViewPager.java:631)
	at androidx.viewpager.widget.ViewPager.onRestoreInstanceState(ViewPager.java:1462)
	at com.heinrichreimersoftware.materialintro.view.SwipeBlockableViewPager.onRestoreInstanceState(SwipeBlockableViewPager.java:171)
	at android.view.View.dispatchRestoreInstanceState(View.java:14835)
	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3174)
	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3180)
	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3180)
	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3180)
	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3180)
	at android.view.View.restoreHierarchyState(View.java:14813)
	at com.android.internal.policy.PhoneWindow.restoreHierarchyState(PhoneWindow.java:2062)
	at android.app.Activity.onRestoreInstanceState(Activity.java:1009)
	at android.app.Activity.performRestoreInstanceState(Activity.java:964)
	at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1164)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413)
	... 9 more