I have a scenario where I am using bottomNavigation with 3 fragments to load in single Activity. In fragment two I have a pager with multiple fragments. I wanted to retain the state of fragment two once all respective fragments loaded with views in pager.
After hectic things I think I have resolved issue.. I have used Singleton design pattern to handle this,
My parent Fragment is a singleton class which will hold fragment list that list will have a fragment to render UI.
Once user will click on bottomNavigation it will load same fragment instance as it already has a list of fragments so once I will insure that it has list I am rendering pager with same list and its same instance of fragment.
Code: To persiste
if(listOfFragments!=null&&listOfFragments.size>0)
binding.tabLayout.setupWithViewPager(notificationBinding.notificationTabsContainer);
binding.tabLayout.setOnTabSelectedListener(this);
binding.notificationTabsContainer.setAdapter(pagerAdapter);
binding.notificationTabsContainer.setOffscreenPageLimit(listOfFragments.size());
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