我們如何才能從android中的地址找到lat？

我有一個地址，希望找到該地址的緯度和經度...有人知道怎麼樣能Lat Long網從Android的地址...我們如何才能從android中的地址找到lat？

我使用這個代碼

Geocoder coder = new Geocoder(getApplicationContext(), Locale 
        .getDefault()); 

      List<Address> address; 

      address = coder.getFromLocationName(
        "Pallekele International Cricket Stadium,Kandy, 1); 
      if (address == null) { 

      } 
      Address location = address.get(0); 
      location.getLatitude(); 
      location.getLongitude(); 

      GeoPoint point = new GeoPoint((int) (location.getLatitude() * 1E6), 
        (int) (location.getLongitude() * 1E6));

但我得到了這個例外

09-02 17:46:56.086: ERROR/Exception(1724): Service not Available 
09-02 17:46:56.086: ERROR/Exception(1724): java.io.IOException: Service not Available 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.location.Geocoder.getFromLocationName(Geocoder.java:159) 
09-02 17:46:56.086: ERROR/Exception(1724):  at pack.sample.map.SampleMapApplication.onCreate(SampleMapApplication.java:38) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.os.Handler.dispatchMessage(Handler.java:99) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.os.Looper.loop(Looper.java:123) 
09-02 17:46:56.086: ERROR/Exception(1724):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
09-02 17:46:56.086: ERROR/Exception(1724):  at java.lang.reflect.Method.invokeNative(Native Method) 
09-02 17:46:56.086: ERROR/Exception(1724):  at java.lang.reflect.Method.invoke(Method.java:521) 
09-02 17:46:56.086: ERROR/Exception(1724):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
09-02 17:46:56.086: ERROR/Exception(1724):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
09-02 17:46:56.086: ERROR/Exception(1724):  at dalvik.system.NativeStart.main(Native Method)

我做錯了什麼？

來源

2010-09-02 Kandha