Kotlin.

Add the following to MainActivity.kt:

override fun onCreate(savedInstanceState: Bundle?) { ... ...

    supportFragmentManager.addOnBackStackChangedListener {
        supportFragmentManager.fragments.lastOrNull()?.onResume()
    }

}

Then, add to AnyFragment.kt:

override fun onResume() {
    super.onResume()
    //txtEdit.requestFocusFromTouch()
}

Now, the onResume() will be called when the Fragment got the focus.