question: public void notify_app_updated ( String package_name ) { InstalledApp app = InstalledApp . find_app ( package_name ) ; if ( app == null ) { return ; } final int pos = _installed_apps . indexOf ( app ) ; if ( pos != - 1 ) { _installed_apps . remove ( pos ) ; _installed_apps . add ( pos , app ) ; notifyItemChanged ( pos ) ; } if ( app . is_update_available ( ) && ! app . has_notified ( ) ) { app . set_has_notified ( true ) ; app . save ( ) ; } }
target:  Notifies the adapter that an app has been updated in the model.