title: Android: Refresh the previous fragment data when pressed backbutton
body: <p>I've got 2 Fragments, Fragment A and Fragment B. I added Fragment B over Fragment A, by using <code>FragmentTransaction().add</code>, which means Fragment A is underlying Fragment B. Is there a way to change the data in Fragment A after I did something on Fragment B and pressed the <strong>Back</strong> button from Fragment B? I wish to have a generic way to notify the Fragment A. Because it may be another Fragment being overlaid. I tried using <code>FragmentTransaction.replace()</code> - it works fine for refreshing the previous page.</p>