Geo location and Google Map : Location « Hardware « Android

1. Android
2. Hardware
3. Location

Geo location and Google Map

 
package app.test;

import java.io.IOException;
import java.util.List;
import java.util.Locale;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
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;

public class Test extends MapActivity {
  
  MapController mapController;

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

    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);

    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);
  }

  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) {
    // 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);

    TextView myLocationText = (TextView)findViewById(R.id.myLocationText);
    
      String latLongString;
    String addressString = "No address found";

    if (location != null) {
      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.getLocality()).append("\n");
          sb.append(address.getPostalCode()).append("\n");
          sb.append(address.getCountryName());
        }
        addressString = sb.toString();
      } catch (IOException e) {}
    } else {
      latLongString = "No location found";
    }
    myLocationText.setText("Your Current Position is:\n" + latLongString + "\n" + addressString);
  }

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

//layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <TextView  
    android:id="@+id/myLocationText"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
  />
  <com.google.android.maps.MapView
    android:id="@+id/myMapView"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:enabled="true"
    android:clickable="true"
    android:apiKey="myAPIKey"
  />
</LinearLayout>

   
  

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