Android: Google Map v2 not showing map for release apk

Question

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 gen

Answer 1

If you are created SHA1 code from custom keystore use the same in release mode. or generate apk by signing with that same keystore and test.

Before that you need clear app data (Setting->App-select app-Clear data->uninstall) and try. this worked for me. Ensure that package name is same as that in google developer console.

Answer 2

Debug certificate is different from your production certificate. You need to add both to your Google Maps key entry in your API console as seaparate row - each with the same packageId, but naturally different SHA1 hash.

EDIT

There's no limit of how many certificate fingerprints and package names are assigned to single Google Maps key, so unless you need this separated is's perfectly fine to have both development and production builds using the same key. In google console it would be like this (one sha1 is from debug cert, which is the same for all apps you build using this IDE, other is production cert):

83:10:58:52:EF:3B:59:70:2B:28:9E:AE:4F:5E:1D:F0:7E:19:FB:F1;com.foo.bar
AE:4F:5E:1D:F0:7E:19:FB:83:10:58:52:EF:3B:59:70:2B:28:9E:AA;com.foo.bar

or even (but I do not recommend using same key for different apps):

83:10:58:52:EF:3B:59:70:2B:28:9E:AE:4F:5E:1D:F0:7E:19:FB:F1;com.foobar.myapp
AE:4F:5E:1D:F0:7E:19:FB:83:10:58:52:EF:3B:59:70:2B:28:9E:AA;com.foo.bar
EF:3B:59:7E:19:FB:83:10:58:57:AE:4F:5E:1D:F0:2B:28:DE:9E:01;net.something.otherapp

Answer 3

create another Maps API key (to put in your manifest) corresponding with you release   
keystore for release.

check Google's documentation

Answer 4

Below method worked for me:

• Put google maps api key in manifest as hardcoded text mentioned by @Florence Herrou

Android Studio creates inside:

app\src\debug\res\values\google_maps_api.xml (debug) //add key here

Add key inside ->

app\src\release\res\values\google_maps_api.xml (release) //add key here