real/fake gps

gps.java

package hardware;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.location.GpsStatus.Listener;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;

public class GPS {

	
	protected static final String TAG = "GPS";
		
	static LocationManager locationManager;
	public static LocationUpdateHandler listener;
	static Location lastLocation = null;
	static boolean fixPosition = false;
	
	//static private GPSInterface gps = new HwGps(); //FakeGPS();
	static private GPSInterface gps = new FakeGPS();
	
	static public boolean init(Activity act) {
		
		boolean ok = gps.init(act);
		Log.i(TAG, "GPS init");
		if (!ok)
			Log.e(TAG, "GPS can't be initialized");
		return ok;
	}
	
	static public boolean shutdown() {
		gps.shutdown();
		Log.i(TAG, "GPS shutdown");
		return true;
	}
	
}

interface GPSInterface {
	boolean init(Activity act);
	boolean shutdown();
}

class HwGps implements GPSInterface {

	@Override
	public boolean init(Activity act) {
		GPS.locationManager =
			(LocationManager) act.getSystemService(Context.LOCATION_SERVICE);

		GPS.listener = new LocationUpdateHandler();
		GPS.locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 
				0, GPS.listener);
		return true;
	}

	@Override
	public boolean shutdown() {
		GPS.locationManager.removeGpsStatusListener((Listener) GPS.listener);
		return false;
	}
	
}

class FakeGPS implements GPSInterface {

	final Handler mHandler = new Handler();
	Thread updateThread;
	boolean running = true;
	
    final Runnable mUpdateResults = new Runnable() {
        public void run() {
        	Location loc = getNextPosition();
        	GPS.listener.onLocationChanged(loc);
        }
    };
    
    float startLat = 41.71283f;
    float startLon = -4.83140f;
    int counter = 0;
    
    Location getNextPosition() {
    	Location loc = new Location("EMU");
    	loc.setLatitude(startLat + 0.0001*counter);
    	loc.setLongitude(startLon);
    	++counter;
    	return loc;
    }
    
	@Override
	public boolean init(Activity act) {
		GPS.listener = new LocationUpdateHandler();
		
		updateThread = new Thread() {
            public void run() {
            	// 8 seconds to adquire signal
            	try {
					Thread.sleep(8000);
				} catch (InterruptedException e1) {
					e1.printStackTrace();
				}
            	while(running) {
	                try {
						Thread.sleep(1000);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
	                mHandler.post(mUpdateResults);
            	}
            }
        };
        updateThread.start();
        
		return true;
	}

	@Override
	public boolean shutdown() {
		running = false;
		updateThread.stop();
		return false;
	}
	
}