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

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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.