Unfortunately after a long day searching I couldn't find anything useful for me.
My Problem is that I couldn't use "extend MapActivity" or rather import the libary. I tried to use "Google API" insted of "Android API" like recomended in some other threads but the problem is that I have no "Google API" in my SDK Manager to download or choose.
My Android SDK Manager So, I have in my "Android SDK Manager" just the Android Apis from "Android 1.5 (API 3)" to "Android 4.0.3 (API 15)" and no "Google API".
Here is an example where the "Google API" is available inside the "Android 4.0.3 (API 15)" Installing the Google APIs...
Is there any posibility to download or import the "Google API" in a different way or am I doing something wrong?