problem debugging a android application

i have some problem when i want to Debug my android code. When i go to Debug as/ it says (none applicable). I have set a breakpoin开发者_如何学编程t though there's no blue arrow on it. Anyone who knows why this is happening?

Thanks

You should setup your debug configuration. It should know what avd to use to launch your code on. If you're using eclipse this article should help.