How do android's Event Listeners work?

Question

How is an event captured from a View object? There is only one thread running : the UI thread (when we haven\'t implemented any of our own threads). Suppose if I have implem

Answer 1

(As posted by the original questioner)

So is that it? Do they work like interrupts?

In Summary, it is not based on Interrupt (Main thread can run other code not waiting for event to happen) .. but rather based on Polling or Looping (Main thread continuously loops through to find any events or tasks are added in Message queue..)