eppinator

public class GetGpsLocation extends Activity {
    private LocationManager lm;
    private TextView tv;
    private long timeStart, timeEnd = 0;
    private int interval = 30000;
    private boolean useGps, useNetwork = false;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //Toast.makeText(this,"GetGpsLocation invoked", Toast.LENGTH_LONG).show();
        setContentView(R.layout.main);
        TextView tv = (TextView) findViewById(R.id.gpsView);
        tv.append("\nGetGpsLocation invoked\n");

        useGps = true;
        useNetwork = false;

        lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        lm.addGpsStatusListener(listener);

        }
    public void onDestroy(){
        super.onDestroy();
        lm.removeGpsStatusListener(listener);
        removeListeners();

    }

    private void addListeners(){
        timeStart = System.currentTimeMillis();
        if(useGps)
            lm.requestLocationUpdates(lm.GPS_PROVIDER, interval, 0, gpsLocationListener);
        if(useNetwork)
            lm.requestLocationUpdates(lm.NETWORK_PROVIDER, interval, 0, networkLocationListener);
        Toast.makeText(this,"Listeners added", Toast.LENGTH_LONG).show();
    }


    private void removeListeners(){
        if(useGps)
            lm.removeUpdates(gpsLocationListener);
        if(useNetwork)
            lm.removeUpdates(networkLocationListener);
        Toast.makeText(this,"Listeners removed", Toast.LENGTH_LONG).show();
    }

    private final LocationListener gpsLocationListener = new LocationListener() {
          public void onLocationChanged(Location l) {
              TextView tv = (TextView)findViewById(R.id.gpsView);
              timeEnd = System.currentTimeMillis();
              tv.append("gpsLocation update (time=" + (timeEnd - timeStart) + ")\n   lat=" + l.getLatitude() + " lon=" + l.getLongitude() + " acc=" + l.getAccuracy() + "\n");
          }

          public void onProviderDisabled(String provider){
              TextView tv = (TextView)findViewById(R.id.gpsView);
              tv.append("gpsLocationListener provider disabled\n");
          }
          public void onProviderEnabled(String provider) {
              TextView tv = (TextView)findViewById(R.id.gpsView);
              tv.append("gpsLocationListener provider enabled\n");
          }
          public void onStatusChanged(String provider, int status, Bundle extras) {
              TextView tv = (TextView)findViewById(R.id.gpsView);
              tv.append("gpsLocationListener Status changed: " + status + "\n");
          }
    };

    private final LocationListener networkLocationListener = new LocationListener() {
      public void onLocationChanged(Location l) {
          TextView tv = (TextView)findViewById(R.id.gpsView);
          timeEnd = System.currentTimeMillis();
          tv.append("networkLocation update (time=" + (timeEnd - timeStart) + ")\n   lat=" + l.getLatitude() + " lon=" + l.getLongitude() + " acc=" + l.getAccuracy() + "\n");
      }

      public void onProviderDisabled(String provider){
          TextView tv = (TextView)findViewById(R.id.gpsView);
          tv.append("networkLocationListener provider disabled\n");
      }
      public void onProviderEnabled(String provider) {
          TextView tv = (TextView)findViewById(R.id.gpsView);
          tv.append("networkLocationListener provider enabled\n");
      }
      public void onStatusChanged(String provider, int status, Bundle extras) {
          TextView tv = (TextView)findViewById(R.id.gpsView);
          tv.append("networkLocationListener Status changed: " + status + "\n");
      }
  };


    private final GpsStatus.Listener listener = new GpsStatus.Listener() {
        public void onGpsStatusChanged(int event) {
            TextView tv = (TextView)findViewById(R.id.gpsView);
//          tv.append("GPS Status Changed: " + event + "\n");
            if (event == GpsStatus.GPS_EVENT_FIRST_FIX) {
                GpsStatus status = lm.getGpsStatus(null);
                tv.append("GPS Status Changed: TTFF = " + status.getTimeToFirstFix() + "\n");
                // Check number of satellites in list to determine fix state
            }
            else if (event == GpsStatus.GPS_EVENT_STARTED) {
                tv.append("GPS Status Changed: GPS_EVENT_STARTED (" + event + ")\n");
            }
            else if (event == GpsStatus.GPS_EVENT_STOPPED) {
                tv.append("GPS Status Changed: GPS_EVENT_STOPPED (" + event + ")\n");
            }

        }
    };

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);

        menu.add(Menu.NONE, 0, 0, "Start");
        menu.add(Menu.NONE, 1, 1, "Stop");
        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item){
        switch (item.getItemId()) {
        case 0:
            addListeners();
            break;
        case 1:
            removeListeners();
        }
        return false;
    }


}