How can I use FragmentManager to display Fragment A, B, C,… in a FrameLayout?

Question

Dear StackOverflow people,

I have currently one big issue in my Android application.

I am using Fragments for all my activities and I read all the doc here:

Answer 1

use FragmentTransaction to replace fragments.

you can do the replace of fragments programatically.

FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
FragmentB fb = new FragmentB();
ft.replace(R.id.list, fb);
ft.addToBackStack("replacingFragmentA");
ft.commit();

add to back stack is optional.