Location Manager Examples

Location Manager Examples
Here theres is a small program regarding location manager and location class 


package com.vinnysoft.ami; 


import java.util.List; 
import java.util.Locale; 


import android.app.Activity; 
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 WhereAmI extends Activity { 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 


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


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


// String provider = LocationManager.GPS_PROVIDER; 
Location location = locationManager.getLastKnownLocation(provider); 
updateWithNewLocation(location); 


locationManager.requestLocationUpdates(provider, 1000, 0, locationListener); 
} 


private final LocationListener locationListener = new LocationListener() 
{ 


@Override 
public void onLocationChanged(Location location) { 
updateWithNewLocation(location); 
} 


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


@Override 
public void onProviderEnabled(String provider) { 
} 


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


}; 
private void updateWithNewLocation(Location location) { 
String latLong; 
TextView myLocation; 
myLocation = (TextView) findViewById(R.id.myLocation); 


String addressString = "no address found"; 


if(location!=null) { 
double lat = location.getLatitude(); 
double lon = location.getLongitude(); 
latLong = "Lat:" + lat + "\nLong:" + lon; 


double lattitude = location.getLatitude(); 
double longitude = location.getLongitude(); 


Geocoder gc = new Geocoder(this,Locale.getDefault()); 
try { 
List
addresses= gc.getFromLocation(lattitude, longitude, 1); 
StringBuilder sb = new StringBuilder(); 
if(addresses.size()>0) { 
Address address = addresses.get(0); 
for(int i =0;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 (Exception e) { 
} 
} else { 
latLong = " NO Location Found "; 
} 
myLocation.setText("your Current Position is :\n" +latLong + "\n " + addressString ); 
} 
} 




add mapview in main.xml file 


give the permission sin android manifest file