Expected the adapter to be 'fresh' while restoring state

Question

I have a viewpager2 with multiple fragments in FragmentStateAdapter. Whenever I try to open a new fragment and then go back to my current one with viewpager2, I get an exception

Answer 1

I was also getting this java.lang.IllegalStateException: Expected the adapter to be 'fresh' while restoring state. when using ViewPager2 within a Fragment.

It seems the problem was because I was executing mViewPager2.setAdapter(mFragmentStateAdapter); in my onCreateView() method.

I fixed it by moving mViewPager2.setAdapter(mMyFragmentStateAdapter); to my onResume() method.