AddEditFragment Overridden Methods onAttach and onDetach
Class AddEditFragment
overrides Fragment
lifecycle methods onAttach
and onDetach
(Fig. 8.37) to set instance variable listener
to refer to the host Activity
(line 49) when the AddEditFragment
is attached and to set listener
to null
(line 57) when the AddEditFragment
is detached.
44 // set AddEditFragmentListener when Fragment attached45 @Override46 public void onAttach(Activity activity)47 {48 super.onAttach(activity);49 listener = (AddEditFragmentListener) activity;50 }51 52 // remove AddEditFragmentListener when Fragment detached53 @Override54 public void onDetach()55 {56 super.onDetach(); ...
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