how to go back to previous fragment on pressing manually back button of individual fragment?

Question

I have only one activity and multiple fragments in my application.

Two main fragment A(left) and B(right).

Answer 1

@Override
public void onResume() {

    super.onResume();

    getView().setFocusableInTouchMode(true);
    getView().requestFocus();
    getView().setOnKeyListener(new View.OnKeyListener() {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {

            if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK){

                // replace your fragment here

                return true;

            }

            return false;
        }
    });
}

// Happy Coding

Answer 2

You can handle it by adding tag in the backStack. Check my answer here :

https://stackoverflow.com/a/19477957/1572408

hope it helps

Answer 3

Try this, Its Work for me.

public void onBackPressed() {
    if (mainLayout.isMenuShown()) {
        mainLayout.toggleMenu();
    } else {
        FragmentManager fm = getSupportFragmentManager();
        Log.print("back stack entry", fm.getBackStackEntryCount() + "");

        if (fm.getBackStackEntryCount() > 1) {
            fm.popBackStack();
            // super.onBackPressed();
            // return;
        } else {
            if (doubleBackToExitPressedOnce) {
                fm.popBackStack();
                super.onBackPressed();
                return;
            }

            this.doubleBackToExitPressedOnce = true;
            Toast.makeText(this, "Press one more time to exit",
                    Toast.LENGTH_SHORT).show();

            new Handler().postDelayed(new Runnable() {

                @Override
                public void run() {

                    doubleBackToExitPressedOnce = false;
                }
            }, 3000);

        }
    }
}

Answer 4

If you press back image you have to create method first like this

private void Backpresses() {
    getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.contant_main, new Home()).commit();
}

then you have to call like this when you press back image..

 back.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                   Backpresses();

                }
            });

It work fine for me.