want marker like in the image. i have made a custom marker with a circular image but unable to add the ring around the circular image pointing down programmatically. private GoogleMap mMap;
@Overrid
我試圖展現計算剩餘至目的地的距離，以顯示與波紋管代碼的用戶： public class MyService extends Service {
private LocationManager locManager;
private LocationListener locListener = new myLocationListener();
static final
我希望根據縮放級別以米或公里計算半徑。 我發現這個公式 - 這使我每個像素的粗略計算米： https://groups.google.com/forum/#!topic/google-maps-js-api-v3/hDRO4oHVSeM 而且，這些鏈接幫助我理解我試圖完成準確： google map API zoom range How to get center of map for v2 an