Google maps not showing on android in release mode

Question

I am trying to release my app, but having a problem with google maps. The app contains an activity (MapActivity) that displays a map. When running in debug mode, the map works fine. I signed my app in release mode, and got SHA1. I created a new android key on Google console as required (SHA1;packageName). Got the API Key

In my App, I referenced a copy of google-play-services-lib as required. I am using ADT.

map.xml

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.SupportMapFragment" />

MapActivity.java

public class MapActivity extends FragmentActivity {

private GoogleMap map;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.map);

    map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                        .getMap();
  }

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.rentalcar"
android:versionCode="1"
android:versionName="1.0" >



<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>

<permission
      android:name="com.example.rentalcar.permission.MAPS_RECEIVE"
      android:protectionLevel="signature"/>
    <uses-permission android:name="com.example.rentalcar.permission.MAPS_RECEIVE"/>


<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme"
     >

    <activity
        android:name="com.example.rentalcar.MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter> 
    </activity>      

    <activity
        android:name="com.example.rentalcar.MapActivity"
        android:label="@string/title_activity_map"
        android:screenOrientation="portrait" >
    </activity>

    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="My_Key"/>

</application>

</manifest>

The only weird thing is that when I use keytool to get SHA1 I get "Signature Algorithm name: SHA256withRSA. can this be the problem? If yes, how can I change it?

I am kind of stuck here! Thank you for any help!

Answer 1

if you already tried @Budius answer and still facing this error, it might be caused by the following situation:

When you add your MapFragment, Android Studio create 2 files google_maps_api.xml: one inside src/debug/res/values folder and the other inside src/release/res/values.

But for some reason only the debug folder file is showed on Android Studio. So, when you change the APIkey value, it is done only at debug folder file.

So just copy the google_maps_api.xml file to release folder and assure that both are with same APIKey.

this worked for me after all other attempts.