Map API Key doesn't works in Android app

i've been working 开发者_高级运维for a while in an Android app that uses a lot of the Maps API. And the thing is it works in the emulator with my debug key, but i see only a grid when i put "true" key, i tried with three already that i know they worked, so why could it be? I have internet permission (in the right place, befoce ) and i just can't find why this thing only works with the debug key.

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Updated to reference a different article

There is additional information about how to configure the Android emulator to work with google maps in this article.