How to replace fragment C with fragment A when back button is pressed?

Question

My scenario : Activity 1 consists of Fragments A-> B-> C. All the fragments are added using this code :

        FragmentManager fm = getSupportFragmentManager()         


        

Answer 1

This is how I do it..

With FragmentA.java and any other fragments.

Replace your fragment with its class name as tag:

private void showFragment(Fragment fragment){
        if(fragment != null){
            getSupportFragmentManager().beginTransaction().replace(R.id.container,fragment,fragment.getClass().getSimpleName()).commit();
        }
    }

Now in onBackPressed():

@Override
    public void onBackPressed()
    {
if(getSupportFragmentManager().findFragmentByTag("FragmentA") == null)
            showFragment(new FragmentA());
        else
            super.onBackPressed();
    }