If you intend implement Google Maps on Android application, you must have a Google Maps API key. To use the Google Maps Android API v2, you must register your app project on the Google Developers Console and get a Google API key which you can add to your app. Arcording

Today, I implement a sample to show Google Maps on Android Fragment. I have an activity (MainActivity), two fragments contained in MainActivity is InfoFragment and MapFragment. In MapFragment, I attach a MapFragment in layout file. <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns: