MainActivity to fragment and back to MainActivity on pressing back button

Question

I have a Mainactivity which contains a Layout which is parent of 4 sub layout. on clicking on sub layout i am going to a new fragment replacing main layout. But i cant go ba

Answer 1

You can Override the onBackPressed of MainActivity

@Override
public void onBackPressed() {
    if (getFragmentManager().getBackStackEntryCount() > 1) {
        getFragmentManager().popBackStack();
    } else {
        super.onBackPressed();
    }
}