如何从任何片段返回主活动？

Question

I have 5 Fragment and the user can go to any of them from MainActivity navigation drawer. for example, the user opens the navigation drawer and clicks on Settings. when the user presses back button it closes the app. But I wanna take the user back to MainActivity. how can I do that?

I tried all codes in StackOverflow and no one helped. this is how I take the user to the settings fragment.

getSupportFragmentManager().beginTransaction().replace(R.id.framlayout_main, new SettingFragment(), "settings").commit();
                    Method.onBackPress = true;
                    drawer.closeDrawers();
                    break;

Answer 1

It seems that what you want is to clear the fragment backstack, try this:

FragmentManager fm = getActivity().getSupportFragmentManager();
for( int i = 0; i < fm.getBackStackEntryCount(); ++i) {    
    fm.popBackStack();
}