MainActivity Method onContactDeleted

Method onContactDeleted (Fig. 8.21) from the DetailsFragment.DetailsFragmentListener interface is called by the DetailsFragment to notify the MainActivity when the user deletes a contact. In this case, line 122 pops the DetailsFragment from the back stack. If the app is running on a tablet, line 125 calls the contactListFragment’s updateContactList method to reload the contacts.

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118      // return to contact list when displayed contact deleted119      @Override120      public void onContactDeleted()121      {122         getFragmentManager().popBackStack(); // removes top of back stack123 124         if (findViewById(R.id.fragmentContainer) == null) // tablet125            contactListFragment.updateContactList(); ...

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