replaceFragmentToActivity

gistfile1.txt

    public static void replaceFragmentToActivity (@NonNull FragmentManager fragmentManager,
                                                  @NonNull Fragment fragment, int frameId) {
        Fragment fragmentToBacktrack  = fragmentManager.findFragmentById(frameId);
        FragmentTransaction transaction = fragmentManager.beginTransaction();

        if(fragmentToBacktrack!=null)
            transaction.addToBackStack(fragmentToBacktrack.toString());

        transaction.replace(frameId, fragment);
        transaction.commit();
    }