gps

package com.example.contakm;

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

public class AndroidGPSTrackingActivity extends Activity {
    private LocationManager lm;
    private TextView speed,longitude,latitude,averagespeed;
    private double averageS;
    int count;

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

        speed=(TextView)findViewById(R.id.textView1);
        longitude=(TextView)findViewById(R.id.textView5);
        latitude=(TextView)findViewById(R.id.textView4);
        averagespeed=(TextView)findViewById(R.id.textView7);

        longitude.setText("");
        latitude.setText("");
            // avvio il servizio

            lm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

            // creo il provider gps
            if ( lm.isProviderEnabled(LocationManager.GPS_PROVIDER) ) {

                startGpsTracking();

            }else{
                //se vi sono errori
            }

        }

    //questo metodo, non fa altro che avviare la connessione
    private void startGpsTracking() {

        lm.addGpsStatusListener(gpsListener);
        //precisione
        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000 , 5, myLocListener );

    }

    //listener per le azioni
    private Listener gpsListener= new Listener () {
        public void onGpsStatusChanged(int status) {

            switch (status) {

            case GpsStatus.GPS_EVENT_FIRST_FIX:

                Log.d("tag", "onGpsStatusChanged First Fix");

                break;

            case GpsStatus.GPS_EVENT_SATELLITE_STATUS:

                Log.d("tag", "onGpsStatusChanged Satellite");

                break;

            case GpsStatus.GPS_EVENT_STARTED:

                Log.d("tag", "onGpsStatusChanged Started");

                break;

            case GpsStatus.GPS_EVENT_STOPPED:

                Log.d("tag", "onGpsStatusChanged Stopped");

                break;
            }
        }
    };


    //listener per la locazione
private LocationListener myLocListener = new LocationListener(){

    public void onLocationChanged(Location location) {

            Log.d("tag", "onLocationChanged");
            speed.setText(((int)(location.getSpeed()*3.6))+"km/h");
            longitude.setText(location.getLongitude()+"");
            latitude.setText(location.getLatitude()+"");
            count++;
            averageS+=location.getSpeed()*3.6;
            averageS/=count;
            averagespeed.setText(((int)averageS)+"km/h");

        }
        public void onProviderDisabled(String provider) {
            Log.d("tag", "onProviderDisabled");
        }
        public void onProviderEnabled(String provider) {
            Log.d("tag", "onProviderEnabled");
        }
        public void onStatusChanged(String provider, int status, Bundle extras) {

            Log.d("tag", "onStatusChanged");
        }
    };

}