How to disable back button pressed in android fragment class

Question

I want to disable the back button in a fragment class. onBackPressed() doesn't seem to work in this fragment. How could I disable the back button?

This is my sample code:

public class Login extends Fragment {     public View onCreateView(LayoutInflater inflater, ViewGroup container,        ,Bundle savedInstanceState) {         ViewGroup root = (ViewGroup) inflater.inflate(R.layout.login, null);         return root;     }      public void onBackPressed() {     } } 

Answer 1

You have to override onBackPressed of parent FragmentActivity class. Therefore, put your codes in parent FragmentActivity. Or you can call parent's method by using this:

public void callParentMethod(){     getActivity().onBackPressed(); } 

in FragmentActivity override onBackPressed Method and not call its super class to disable back button.

@Override public void onBackPressed() {   //super.onBackPressed();   //create a dialog to ask yes no question whether or not the user wants to exit   ... } 

Answer 2

Here is the new way you can manage your onBackPressed() in fragment with the new call back of activity:

    // Disable onBack click     requireActivity().onBackPressedDispatcher.addCallback(this) {       // With blank your fragment BackPressed will be disabled.     } 

Here is the android doc link: https://developer.android.com/reference/androidx/activity/OnBackPressedDispatcher