How to observe Android's Clipboard, really?

Question

I need to detect Android Clipboard\'s content changes, and register the changes, but I can\'t really understand how to achieve such result.

There are a lot of clipboard

Answer 1

According to this thread, at least for the Clipper program, they do indeed poll the clipboard - every 5 seconds. There doesn't seem to be anything in the API to do it any other way.