Fragment: which callback invoked when press back button & customize it

Question

I have a fragment:

public class MyFragment extends Fragment{
     ...
     @Override
     public View onCreateView(...){...}    
     ...
}

Answer 1

androidx.activity 1.0.0-alpha01 is released and introduces ComponentActivity, a new base class of the existing FragmentActivity and AppCompatActivity.

You can now register an OnBackPressedCallback via addOnBackPressedCallback to receive onBackPressed() callbacks without needing to override the method in your activity.