Get Map address or Location Address in Android

Question

I am writing an app that requires to get the current map location. My Map file works fine by it self, but I need to get the address (see addressString below at the buttom) from another Activity. I tried getAddress/setAddress (setters/getters). They do not work. They always return 'no address' (the default).

Here is my code...

How can I make this a standalone Java class??? Or get the address from another activity?

Thanks a lot.

This code works by itself.

Mat

---

import android.content.Context;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

public class GetMapAddress extends MapActivity {

    MapController mapController;

    MyPositionOverlay positionOverlay;

    MapController mc;

    GeoPoint p;

    String addressString = "No address found";

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.map);

        MapView myMapView = (MapView) findViewById(R.id.myMapView);
        mapController = myMapView.getController();

        // Configure the map display options
        myMapView.setSatellite(true);
        myMapView.setStreetView(true);

        // Zoom in
        mapController.setZoom(17);

        myMapView.setBuiltInZoomControls(true);

        // Add the MyPositionOverlay
        positionOverlay = new MyPositionOverlay();
        List<Overlay> overlays = myMapView.getOverlays();
        overlays.add(positionOverlay);

        LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        Criteria criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);
        criteria.setAltitudeRequired(false);
        criteria.setBearingRequired(false);
        criteria.setCostAllowed(true);
        criteria.setPowerRequirement(Criteria.POWER_LOW);
        String provider = locationManager.getBestProvider(criteria, true);

        Location location = locationManager.getLastKnownLocation(provider);

        updateWithNewLocation(location);

        locationManager.requestLocationUpdates(provider, 2000, 10, locationListener);

        mc = myMapView.getController();
        String coordinates[] = {
            "1.352566007", "103.78921587"
        };
        double lat = Double.parseDouble(coordinates[0]);
        double lng = Double.parseDouble(coordinates[1]);

        p = new GeoPoint((int) (lat * 1E6), (int) (lng * 1E6));

        mc.animateTo(p);
        mc.setZoom(17);
        myMapView.invalidate();

    }

    private final LocationListener locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {
            updateWithNewLocation(location);
        }

        public void onProviderDisabled(String provider) {
            updateWithNewLocation(null);
        }

        public void onProviderEnabled(String provider) {
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {
        }
    };

    /** Update the map with a new location */
    private void updateWithNewLocation(Location location) {
        TextView myLocationText = (TextView) findViewById(R.id.myLocationText);

        String latLongString;

        if (location != null) {
            // Update my location marker
            positionOverlay.setLocation(location);

            // Update the map location.
            Double geoLat = location.getLatitude() * 1E6;
            Double geoLng = location.getLongitude() * 1E6;
            GeoPoint point = new GeoPoint(geoLat.intValue(), geoLng.intValue());

            mapController.animateTo(point);

            double lat = location.getLatitude();
            double lng = location.getLongitude();
            latLongString = "Lat:" + lat + "\nLong:" + lng;

            Geocoder gc = new Geocoder(this, Locale.getDefault());

            try {

                List<Address> addresses = gc.getFromLocation(lat, lng, 1);
                StringBuilder sb = new StringBuilder();

                if (addresses.size() > 0) {
                    Address address = addresses.get(0);

                    for (int i = 0; i < address.getMaxAddressLineIndex(); i++)
                        sb.append(address.getAddressLine(i)).append("\n");

                    sb.append(address.getCountryName());
                }
                addressString = sb.toString();
            } catch (IOException e) {
            }
        } else {

            // Place the CellID here
            latLongString = "No location found";

        }
        // This commented out line will include latitute and longtitute
        // myLocationText.setText("Your Phone is Currently at.. \n" + latLongString + "\n" +
        // addressString);

        myLocationText.setText("Your Phone is Currently at.. \n" + addressString);
        setAddress(addressString);

        ;

    }

    public void setAddress(String add) {
        this.addressString = add;
    }

    public String getAddress() {

        return addressString;
    }

    @Override
    protected boolean isRouteDisplayed() {
        return false;
    }
}

Answer 1

I have used the following code in my app and its working absolutely fine for me. Try this. Hope this will help you.

    //
    //  Write the location name.
    //

    try {

        Geocoder geo = new Geocoder(youractivityclassname.this.getApplicationContext(), Locale.getDefault());
        List<Address> addresses = geo.getFromLocation(latitude, longitude, 1);
        if (addresses.isEmpty()) {
            yourtextfieldname.setText("Waiting for Location");
        }
        else {
            if (addresses.size() > 0) {
                yourtextfieldname.setText(addresses.get(0).getFeatureName() + ", " + addresses.get(0).getLocality() +", " + addresses.get(0).getAdminArea() + ", " + addresses.get(0).getCountryName());
                //Toast.makeText(getApplicationContext(), "Address:- " + addresses.get(0).getFeatureName() + addresses.get(0).getAdminArea() + addresses.get(0).getLocality(), Toast.LENGTH_LONG).show();
            }
        }
    }
    catch (Exception e) {
        e.printStackTrace(); // getFromLocation() may sometimes fail
    }

Answer 2

Either pass the address to your second Activity in the Intent, or if you need to do lookups from your second Activity, just call Geocoder from there.

If you're somehow instantiating the above class (GetMapActivity) from your second Activity and calling the getAddress method, that won't work.

Answer 3

The following might work [move the code from onCreate and put it in a method]

public String getAddressString() {
        if (addressString.equals("default") {
          LocationManager lm = (LocationManager)act.getSystemService(Context.LOCATION_SERVICE);
          Criteria crit = new Criteria();
          crit.setAccuracy(Criteria.ACCURACY_FINE);
          String provider = lm.getBestProvider(crit, true);
          updateWithNewLocation(lm.getLastKnownLocation(provider));              
        }
        return addressString;
    }