Question

In android I can easily get onLocationChanged to work and gets the mobile latitude and longitude.

However once I got these coordinates How can I get the address of the mobile e.g

XYWZ Road, GRDSASDF Sector 823432, Australia  etc

Answer 1

Geocoder is a class for handling Geocoding and Reverse Geocoding.

1. Geocoding is the process of transforming a street address or other
   description of a location into a (latitude, longitude) coordinate.
2. Reverse Geocoding is the process of transforming a (latitude,
   longitude) coordinate into a (partial) address.

The amount of detail in a reverse geocoded location description may vary, for example one might contain the full street address of the closest building, while another might contain only a city name and postal code. The Geocoder class requires a backend service that is not included in the core android framework. The Geocoder query methods will return an empty list if there no backend service in the platform. Use the isPresent() method to determine whether a Geocoder implementation exists.

The getFromLocation(double latitude, double longitude, int maxResults) method returns an array of Addresses that are known to describe the area immediately surrounding the given latitude and longitude. The returned addresses will be localized for the locale provided to this class’s constructor.

The returned values may be obtained by means of a network lookup. The results are a best guess and are not guaranteed to be meaningful or correct. It may be useful to call this method from a thread separate from your primary UI thread.

Here a Tutorial to get familiar with the Geocoder:

public class AndroidFromLocation extends Activity {

double LATITUDE = 37.42233;
double LONGITUDE = -122.083;

   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       TextView myLatitude = (TextView)findViewById(R.id.mylatitude);
       TextView myLongitude = (TextView)findViewById(R.id.mylongitude);
       TextView myAddress = (TextView)findViewById(R.id.myaddress);

       myLatitude.setText("Latitude: " + String.valueOf(LATITUDE));
       myLongitude.setText("Longitude: " + String.valueOf(LONGITUDE));

       Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);

       try {
  List<Address> addresses = geocoder.getFromLocation(LATITUDE, LONGITUDE, 1);

  if(addresses != null) {
   Address returnedAddress = addresses.get(0);
   StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
   for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
    strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
   }
   myAddress.setText(strReturnedAddress.toString());
  }
  else{
   myAddress.setText("No Address returned!");
  }
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  myAddress.setText("Canont get Address!");
 }

   }
}