Why FragmentManager's getBackStackEntryCount() return zero?

Question

private static void changeFragment(Fragment f, boolean init) {
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(R.id.info_content, f,f.getC         


        

Answer 1

It might be too late to answer this question. Hope this answer will help someone anyway.

Mostly it depends on where you are actually calling getBackStackEntryCount() method. In my case, I was calling this method after calling super.onBackPressed(). The moment this method was got called, there was no fragment in back stack. That's why I was always receiving 0.

Right way of calling the method in onBackPressed() :

   @Override
public void onBackPressed() {
    try {
        int backStackEntryCount = getSupportFragmentManager().getBackStackEntryCount();
        Log.d("class", "items in backstack " + backStackEntryCount);
    } catch (Exception e) {
        e.printStackTrace();
    }
    super.onBackPressed();
}