反向地理編碼實現

Question

我期待在android中實現反向地理編碼，但我有一些問題可以有人給我一些方向？ 這裏是我的代碼：

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

     textLong = (TextView) findViewById(R.id.textLong); 
     textLat = (TextView) findViewById(R.id.textLat); 


     LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
     LocationListener listener = new myLocationListner(); 
     manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener); 




    } 

    public class myLocationListner implements LocationListener{ 

     @Override 
     public void onLocationChanged(Location location) { 
      if (location != null){ 

       double gettextLong = location.getLongitude(); 
       double gettextLat = location.getLatitude(); 

       textLat.setText(Double.toString(gettextLat)); 
       textLong.setText(Double.toString(gettextLong)); 


      } 

Answer 1

你需要創建一個地理編碼對象，並使用.getFromLocation方法：

Geocoder geocoder = new Geocoder(this, Locale.getDefault()); 
List<Address> addresses = geocoder.getFromLocation(gettextLat, getTextLong, 1); 

即：

public class myLocationListner implements LocationListener{ 

    Geocoder mGeocoder; 

    // default constructor 
    myLocationListener() { 
     // instantiate geocoder object: 
     mGeocoder = new Geocoder(this, Locale.getDefault()); 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
     if (location != null){ 

      double gettextLong = location.getLongitude(); 
      double gettextLat = location.getLatitude(); 

      textLat.setText(Double.toString(gettextLat)); 
      textLong.setText(Double.toString(gettextLong)); 

      List<Address> addresses = mGeocoder.getFromLocation(gettextLat, getTextLong, 1); 

     } 
    } 

見：http://developer.android.com/reference/android/location/Geocoder.html