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我尝试将谷歌地图显示到其纬度和经度为 +34° 6' 46.53"、+35° 39' 1.04 的位置，然后我构建了此代码

public class conactus extends Activity {

//instance variables for Marker icon drawable resources
private int userIcon;

//the map
private GoogleMap theMap;

//user marker
private Marker userMarker;

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

    //get drawable IDs
    userIcon = R.drawable.yellow_point;
    //find out if we already have it
    if(theMap==null){
        //get the map
        theMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap();
        //check in case map/ Google Play services not available
        if(theMap!=null){
            //ok - proceed
            theMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
            //update location
            updatePlaces();

        }

    }
}

private void updatePlaces(){

    //get last location
    double lat = 34.112924;
    double lng = 35.650288;
    //create LatLng
    LatLng lastLatLng = new LatLng(lat, lng);

    //remove any existing marker
    if(userMarker!=null) userMarker.remove();
    //create and set marker properties
    userMarker = theMap.addMarker(new MarkerOptions()
    .position(lastLatLng)
    .title("You are here")
    .icon(BitmapDescriptorFactory.fromResource(userIcon))
    .snippet("Your last recorded location"));
    //move to location
    theMap.animateCamera(CameraUpdateFactory.newLatLng(lastLatLng), 3000, null);
}

}

但是当我在真实设备上运行应用程序并在设备上激活谷歌播放服务后，我得到了未显示的带有 logcat 的地图

09-06 16:13:30.609: I/Google Maps Android API(18952): Failed to contact Google servers. Another attempt will be made when connectivity is established.
09-06 16:13:30.629: E/Google Maps Android API(18952): Failed to load map. Error contacting Google servers. This is probably an authentication issue (but could be due to network errors).
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1 回答 1

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1.尝试添加以下权限

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

2. 必须After changing API key_AndroidManifest.xml Clear Application Data

清除应用程序数据：

要么去Settings>Application Manager>Select Your Application > Click on Clear Data

或者 Must Uninstall The Application 之前installing it ! 注意不要Re-install，除非你Completely Uninstall the Application为了clear its Data completely

于 2013-09-06T13:25:19.003 回答