Android “不成功”； } 返回结果；} @凌驾 受保护的void onPostExecute（字符串结果）{ //TODO自动生成的方法存根 super.onPostExecute（结果）； tv2.setText（“结果”）； }** } } }

仅供参考，您可以使用runnOnUIThread（Runnable R）更改文本

无论如何，使用AsyncTask会更好，因为在连接时不会冻结UI

public class GpsActivity extends Activity {

private LocationManager lm;
private LocationListener locationListener;
public static TelephonyManager tm;
public static TextView tv;
public static Socket s;
public static PrintWriter out;


/**
 * Called when the activity is first created.
 */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/**
 * retrieve a reference to provide access to information about the telephony services on the device     
 */
tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); 
setContentView(R.layout.main);
/**
* retrieve a reference to provide access to the system location services    
*/              
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);    


 /**
  * explicitly select the provider, create a set of Criteria and let android choose the best provider available
  */

  Criteria criteria = new Criteria();
  criteria.setAccuracy(Criteria.ACCURACY_FINE);
  criteria.setAltitudeRequired(false);
  criteria.setBearingRequired(false);
  criteria.setCostAllowed(true);
  criteria.setPowerRequirement(Criteria.POWER_LOW);
  String provider = lm.getBestProvider(criteria, true);
  /**
   * This method takes in four parameters:
   provider: The name of the provider with which you register
   minTime: The minimum time interval for notifications, in milliseconds.
   minDistance: The minimum distance interval for notifications, in meters.
   listener: An object whose onLocationChanged() method will be called for each location update.
   */
   locationListener = new MyLocationListener();
   lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

   tv = (TextView) findViewById(R.id.textView1);
   tv.setText("I currently have no Location Data.");

   }

    /**
     * Connects the Android Client to a given server
     * 
     * @param name
     *            The name of the remote server
     * @param port
     *            Port number to connect to at the remote server.
     * @throws IOException
     * @throws UnknownHostException
     */
    public static void connect(String name, int port)
    throws UnknownHostException, IOException
{

s = new Socket(name, port);
out = new PrintWriter(s.getOutputStream(), true);
}

/**
 * Sends a string message to the server.
 * 
 * @param msg
 *            The message to be sent.
 * @throws IOException
 */
 public static void send(String msg) throws IOException
 {
 if (!s.isClosed() && msg != null)
 {
    out.println(msg);
    if (msg.contains("CMD_QUIT"))
    {
        out.close();
        s.close();
        Log.i("ServerConnection", "Client Disconnected.");
    }
}
}

 //Used for receiving notifications from the LocationManager when the location has changed

private class MyLocationListener implements LocationListener{

@Override
public void onLocationChanged(Location loc) {
    String txt = "Latitude:" + loc.getLatitude() + "/nLongitude:" + loc.getLongitude();
    Log.i("GeoLocation", "My current location is:\n " + txt);
    tv.setText("My current location is:\n" + txt);
    final String msg = loc.getLongitude() + "\n" + loc.getLatitude() + "\n"
       + loc.getTime();


    //determines if the location is within a designated area (rectangle)
    double lat0 = 14.618572;
    double long0 = 120.993816;
    double lat1 = 14.619652;
    double long1 = 120.992770;
    double lat2 = 14.620285;
    double long2 = 120.993451;
    double lat3 = 14.619242;
    double long3 = 120.994497;
    double rel1 = (loc.getLongitude()- long0)*(lat1 - lat0)- ((loc.getLatitude()-lat0)*(long1-long0));
    double rel2 = (loc.getLongitude()- long1)*(lat2 - lat1)- ((loc.getLatitude()-lat1)*(long2-long1));
    double rel3 = (loc.getLongitude()- long2)*(lat3 - lat2)- ((loc.getLatitude()-lat2)*(long3-long2));
    double rel4 = (loc.getLongitude()- long3)*(lat0 - lat3)- ((loc.getLatitude()-lat3)*(long0-long3));

    // if yes, it will connect to server and send the location and timestamp


    if (rel1 >= 0 && rel2 >= 0 && rel3 >= 0 && rel4 >= 0 )
    {

        try
        {
        connect("IP address", 27960);
        send("CMD_HELLO");
        send(msg);
        tv.setText("Location is inside the road network...sending coordinates to server");
        send("CMD_QUIT");
        } catch (UnknownHostException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        }


    else
    {
        tv.setText("Current location is outside the road network");

    }
    }





@Override
public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

}

        }
        }

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
 /**
  * retrieve a reference to provide access to information about the telephony services on the device     
  */
    tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); 
    setContentView(R.layout.main);
 /**
  * retrieve a reference to provide access to the system location services    
  */              
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);    


/**
explicitly select the GPS provider, create a set of Criteria and let android choose 
the best provider available
 */

Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = lm.getBestProvider(criteria, true);
/**
 * This method takes in four parameters:
provider: The name of the provider with which you register
minTime: The minimum time interval for notifications, in milliseconds.
minDistance: The minimum distance interval for notifications, in meters.
listener: An object whose onLocationChanged() method will be called for each location update.
 */
locationListener = new MyLocationListener();
lm.requestLocationUpdates(provider, 1000, 1, locationListener);

tv = (TextView) findViewById(R.id.textView1);
tv.setText("I currently have no Location Data.");

}

/**
 * Connects the Android Client to a given server
 * 
 * @param name
 *            The name of the remote server
 * @param port
 *            Port number to connect to at the remote server.
 * @throws IOException
 * @throws UnknownHostException
 */
 public static void connect(String name, int port)
        throws UnknownHostException, IOException
{

    s = new Socket(name, port);
    out = new PrintWriter(s.getOutputStream(), true);
}

/**
 * Sends a string message to the server.
 * 
 * @param msg
 *            The message to be sent.
 * @throws IOException
 */
 public static void send(String outmsg) throws IOException
{
    if (!s.isClosed() && outmsg != null)
    {
        out.println(outmsg);
        out.close();
        s.close();
        }}



  //Used for receiving notifications from the LocationManager when the location has changed

private class MyLocationListener implements LocationListener{


    @Override
    public void onLocationChanged(Location loc) {
        String txt = "Latitude:" + loc.getLatitude() + "/nLongitude:" + loc.getLongitude();
        Log.i("GeoLocation", "My current location is:\n " + txt);
        tv.setText("My current location is:\n" + txt);
        String msg=loc.getLongitude() + "\n" + loc.getLatitude() + "\n"
        + loc.getTime();
        tv1 = (TextView) findViewById(R.id.textView2);
        tv2 = (TextView) findViewById(R.id.textView3);  
        //determines if the location is within a designated area (rectangle)
        double lat0 = 14.609794;
        double long0 = 120.986018;
        double lat1 = 14.608966;
        double long1 = 120.986037;
        double lat2 = 14.609031;
        double long2 = 120.984991;
        double lat3 = 14.609877;
        double long3 = 120.985069;
        double rel1 = (loc.getLongitude()- long0)*(lat1 - lat0)- ((loc.getLatitude()-lat0)*(long1-long0));
        double rel2 = (loc.getLongitude()- long1)*(lat2 - lat1)- ((loc.getLatitude()-lat1)*(long2-long1));
        double rel3 = (loc.getLongitude()- long2)*(lat3 - lat2)- ((loc.getLatitude()-lat2)*(long3-long2));
        double rel4 = (loc.getLongitude()- long3)*(lat0 - lat3)- ((loc.getLatitude()-lat3)*(long0-long3));

        // if yes, it will connect to server and send the location and timestamp

       if (rel1 >= 0 && rel2 >= 0 && rel3 >= 0 && rel4 >= 0 )
        {
           tv1.setText("Location is inside the road network...");
           **new connectSend().execute(msg);**  
           }


        else
        {
            tv1.setText("Current location is outside the road network");

        }
        }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }

    **public class connectSend extends AsyncTask<String, String, String>{

        @Override
        protected String doInBackground(String... msg) {
            // TODO Auto-generated method stub
            String result;

            try
            {
            connect("ip address", port);

            send(msg[0]);

            result = "SUCCESSFUL coordinates sent to server";

            } catch (UnknownHostException e)
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
                result = "NOT SUCCESSFUL ";
            } catch (IOException e)
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
                result = "NOT SUCCESSFUL ";
            }
            return result;}

        @Override
        protected void onPostExecute(String result) {
            // TODO Auto-generated method stub
            super.onPostExecute(result);
            tv2.setText("result");

            }**


}


    }

}