Remove only fragment when back pressed

Question

I create sample app to show some data to user when user start specific activity and click on specific button the app start new fragment (only fragment added to activity for now ) my problem is when user click back the fragment and the activity removed and go to parent activity. using this code to do that

android.support.v4.app.FragmentManager fragmentManager = ((FragmentActivity) context).getSupportFragmentManager();
fragmentManager.popBackStack();

also I use the same code in another action when user click in specific button fragment and back correctly.
Can anyone help me to solve that

Answer 1

Add fragments to back stack when create them and override onBackPressed in your activity.

To add fragment

FragmentManager mFragmentManager = ((FragmentActivity) context).getSupportFragmentManager();
FragmentTransaction ft = mFragmentManager.beginTransaction();
ft.addToBackStack("tag of fragment");
ft.add("your container id", fragment);
ft.commit();

onBackPress

@Override
public void onBackPressed() {
    if (mFragmentManager.getBackStackEntryCount() > 0)
       mFragmentManager.popBackStackImmediate();
    else super.onBackPressed();
}