How to Get a Fragment to Remove Itself, I.E. Its Equivalent of Finish()

How to get a Fragment to remove itself, i.e. its equivalent of finish()?

What I don't understand is what to do in Df when 'OK' is pressed in order to remove fragments Df, Cf, and Bf?

Step #1: Have Df tell D "yo! we got the OK click!" via calling a method, either on the activity itself, or on an interface instance supplied by the activity.

Step #2: Have D remove the fragments via FragmentManager.

The hosting activity (D) is the one that knows what other fragments are in the activity (vs. being in other activities). Hence, in-fragment events that might affect the fragment mix should be propagated to the activity, which will make the appropriate orchestration moves.

remove the last fragment when leaving activity

This is a little more elegant way of doing it...

I forgot about the onStart()... it is called when the activity is first started. To avoid the fragment being popped upon first opening the application a polymorphic check is applied in the if statement

public class MainActivity extends AppCompatActivity {

    private FrameLayout contentFrame;
    private FragmentManager fm;
    private Button nextButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        contentFrame = (FrameLayout) findViewById(R.id.content_frame);

        fm = getSupportFragmentManager();

        FragmentTransaction ft = fm.beginTransaction();
        ft.add(R.id.content_frame, new F1()).commit();

        nextButton = (Button) findViewById(R.id.next);

        nextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(fm.findFragmentById(R.id.content_frame).getClass() == F1.class) {
                    FragmentTransaction ft = fm.beginTransaction();
                    ft.addToBackStack("F2");
                    ft.add(R.id.content_frame, new F2());
                    ft.commit();
                } else {
                    startActivity(new Intent(MainActivity.this, ActivityTwo.class));
                }
            }
        });

    }

    @Override
    protected void onStart() {
        super.onStart();
        if(fm.findFragmentById(R.id.content_frame).getClass() == F2.class) {
            fm.popBackStackImmediate("F2", FragmentManager.POP_BACK_STACK_INCLUSIVE);
        }
    }
}

Best of luck. Code has been tested as working.

How to open a fragment from another fragment using binding?

Try this code plz:

FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.home_layout, new ChatFragment(), "second fragment"); //My second Fragment
        fragmentTransaction.addToBackStack(null);
        fragmentTransaction.commit();

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