Compiling code in Android Studio, Google map view always shows blank? <p>I have a very annoying issue with a project I am working on in Android Studio.</p> <p>I have another developer working on code for me, and part of the app has a Google map view.</p> <p>When this other person sends me raw code, I can open the project in Android Studio, compile it, and run it on a device and everything works fine - except the Google map is blank - grey screen, with "Google" logo in bottom corner.</p> <p>If this person sends me an APK file, I can download it straight to my phone, and it works perfectly. Map shows and loads as it should.</p> <p>The APK he sends is compiled from the same code, but compiled at his end.</p> <p>I see several questions on SO asking about blank Google maps, with possible code solutions - but because the APK works fine, it surely cant be a code issue?</p> <p>I have made sure all my Android Studio is updated to the latest versions, but any time I compile the code on my machine, it shows this blank map.</p> <p>Any ideas of where to look to solve this? Is there something I need to do within my install of Android Studio to get the map loading, or is there an API I need to load or install?</p> <p>This is driving me nuts, because I cant make any changes directly to the code on my machine, and need to always get the other developer to make any small changes and then compile on his machine and send me the APK!</p> <p>(PS: We are in different locations, so just comparing both our installations is not an option!)</p>