title: extend 2 classes problem android
body: <p>i'm a junior programmer. I have a base class that extends activity, i use this class to set up the menu in my app. All my activity classes extends this base class. Now, i have a new class which extend ExpandableListActivity this class's purpose is to show an expandable list and of course when the user is viewing this activity the menu becomes unavailable. So how can i do to be able to use the menu while viewing the expandable list. I know that it's impossible to extend more than one class in Java, so what's the trick?</p>
  
  <p>Thanks in advance </p>