GPS Examepl

gps.java

    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    setContentView(R.layout.activity_gps);
    latituteField = (TextView) findViewById(R.id.latitudeTextField);
    longitudeField = (TextView) findViewById(R.id.longitudeTextField);
    altitudeField = (TextView) findViewById(R.id.altitudeTextField);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    Criteria criteria = new Criteria();
    provider = locationManager.getBestProvider(criteria, false);
    Location location = locationManager.getLastKnownLocation(provider);

    gps = new GPS(this);
    gps.setContext(this);
    GPS.setLocation(location);
    GPS.setFields(latituteField, longitudeField, altitudeField);
    GPS.showSettingsAlert(locationManager);
    
    Toast.makeText(this,
        GPS.getLatitude(), Toast.LENGTH_SHORT).show();