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My google map app works fine on device with debug google map API KEY but when I create signed apk for my app with release google map API KEY, it does not display map. To generate release mode google API KEY , i am using SHA1 fingerprint with my keystore. And i am also defining "signing and build types" in my project Settings as explained by developer.android.com(http://developer.android.com/tools/publishing/app-signing.html).
Tried every possible solution(removing apk and than reinstalling it again, restarting the device, cleaning the project ). nothing worked. Anybody have a good solution to my problem please help. FYI Using android studios platform.
I had a similar issue and the problem was that I generated the apk from Android Studio without first selecting the right flavour. This means my manifest was still using the Google Maps API key that I created for the debug flavour.
Please make sure you select the release flavour in your Android Studio. See screenshot below:
The API key needs to be hardcoded into the Android Manifest, and it doesn't work if it's in a separate resources XML file.