Android customize header of app

How can i customize the header of my 开发者_C百科app like the green stripe here?

When i start my app, its gray and slim.

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Friend, this will give you complete information about tht:http://www.londatiga.net/it/how-to-create-custom-window-title-in-android/

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I think the app is in fullscreen.. Try making yours the same and you will get what you want.