Custom event listener on Android app

Question

I need to set up a simple event listener to refresh a ListView once in a while. The problem is I don\'t know how could I generate an event.

I know that

Answer 1

try this:

interface MyHandlerInterface
{
   void onHandle(Object obj)
}
class myListClass
{
   MyHandlerInterface myHandler;
   public void setHandlerListener(MyHandlerInterface listener)
   {
      myHandler=listener;
   }
   protected void myEventFired(myObj)
   {
      if(myHandler!=null)
         myHandler.onHandle(myObj);
   }
}