public class GoogleMapUtil {          
final static String url = "http://mt2.google.cn/vt/lyrs=y@167000000&hl=zh-CN&gl=cn&x=%d&y=%d&z=%d&s=Galil";
public static TileOverlayOptions getGooleMapTileOverlayOptions() {
        TileProvider tileProvider = new UrlTileProvider(256, 256) {
            public URL getTileUrl(int x, int y, int zoom) {
                try {
                    return new URL(String.format(url, x, y, zoom));
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                }
                return null;
            }
        };

        return new TileOverlayOptions()
                .tileProvider(tileProvider)
                .diskCacheEnabled(true)
                .diskCacheSize(100000)
                .diskCacheDir(Configuration.getAppContext().getExternalCacheDir().getAbsolutePath())
                .memoryCacheEnabled(false)
                .zIndex(-9999);
    }
}

调用加入即可接入谷歌地图

aMap.addTileOverlay(GoogleMapUtil.getGooleMapTileOverlayOptions());

这种方式会导致底层为高德地图，上层为谷歌地图，消耗过多流量和内存，也可以用arcGis来实现。