Get current fragment with ViewPager2

Question

I\'m migrating my ViewPager to ViewPager2 since the latter is supposed to solve all the problems of the former. Unfortunately, when using it with a

Answer 1

The solution to find current Fragment by its tag seems the most suitable for me. I've created these extension functions for that:

fun ViewPager2.findCurrentFragment(fragmentManager: FragmentManager): Fragment? {
    return fragmentManager.findFragmentByTag("f$currentItem")
}

fun ViewPager2.findFragmentAtPosition(
    fragmentManager: FragmentManager,
    position: Int
): Fragment? {
    return fragmentManager.findFragmentByTag("f$position")
}

• If your ViewPager2 host is Activity, use supportFragmentManager or fragmentManager.
• If your ViewPager2 host is Fragment, use childFragmentManager

Note that:

• findFragmentAtPosition will work only for Fragments that were initialized in ViewPager2's RecyclerView. Therefore you can get only the positions that are visible + 1.
• Lint will suggest you to remove ViewPager2. from fun ViewPager2.findFragmentAtPosition, because you don't use anything from ViewPager2 class. I think it should stay there, because this workaround applies solely to ViewPager2.