如何分別在定時器中執行兩個任務？

上次我的問題是：「java.lang.RuntimeException：無法在未調用Looper.prepare（）」的線程中創建處理程序。之後，我修改並使用HandlerThread調用位置更新功能。沒有錯誤，但位置不刷新。任何人都可以提一些建議？如何分別在定時器中執行兩個任務？

MyService.java（編輯）

public class MyService extends Service{ 

    int counter = 0; 
    static final int UPDATE_INTERVAL = 15000; 
    private Timer timer = new Timer(); 
    private Timer timer2 = new Timer(); 
    DefaultHttpClient httpclient; 
    HttpPost httppost; 
    String line,result; 
    HttpResponse response; 
    InputStream is; 
    BufferedReader reader; 
    StringBuilder sb; 
    final static String MY_ACTION = "MY_ACTION"; 
    LocationManager lm; 
    LocationListener locationListener; 
    String s = ""; 
    static final int READ_BLOCK_SIZE = 100; 
    List<NameValuePair> nameValuePairs; 
    private HandlerThread refreshThread = null; 


    @Override 
    public IBinder onBind(Intent arg0) { 
      // TODO Auto-generated method stub 
      return null; 
    } 


    public int onStartCommand(Intent intent, int flags, int startId){ 
      doSomethingRepeatedly(); 
      doUpdateLocation(); 
      return START_STICKY;     
    } 

    private void doSomethingRepeatedly(){ 
      timer.scheduleAtFixedRate(new TimerTask(){ 
        public void run(){ 
          ... 
        } 
      },10000,UPDATE_INTERVAL); 
    } 


    private void doUpdateLocation(){ 
     timer2.scheduleAtFixedRate(new TimerTask(){ 
      public void run(){ 
       onClickLoad(); 
       lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 
          locationListener = new MyLocationListener(); 
          refreshThread = new HandlerThread("GPS Thread"); 
          refreshThread.start(); 
        new Handler(refreshThread.getLooper()).post(
        new Runnable() { 
        @Override 
       public void run() { 
         lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 60000, 1000, locationListener); 
        } 
       } 
      );                 
        } 
      },10000,UPDATE_INTERVAL); 
    } 


    private class MyLocationListener implements LocationListener{ 

       @Override 
       public void onLocationChanged(Location arg0) { 
         if(arg0!=null){ 
           final String lat = String.valueOf(arg0.getLatitude()); 
           final String lon = String.valueOf(arg0.getLongitude()); 

           new Thread(){ 
           public void run(){ 
             try{ 
              DefaultHttpClient httpclient = new DefaultHttpClient(); 
              HttpPost httppost = new HttpPost("http://www.kryptoquest.com/tracker/getLocation.php"); 
              ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3); 
              nameValuePairs.add(new BasicNameValuePair("Username", s)); 
              nameValuePairs.add(new BasicNameValuePair("Latitude", lat)); 
              nameValuePairs.add(new BasicNameValuePair("Longitude", lon)); 
              Log.d("Latitude",lat); 
              Log.d("Longitude",lon); 
              httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
              httpclient.execute(httppost); 
             }catch(Exception e){ 
               Log.e("log_tag", "Error:"+e.toString()); 
             }   
           } 
         }.start(); 

         lm.removeUpdates(locationListener); 
         refreshThread.getLooper().quit(); 
         }     
       } 

       @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 onClickLoad(){ 

       try 
       { 
         FileInputStream fIn = openFileInput("user.txt"); 
         InputStreamReader isr = new InputStreamReader(fIn); 

         char[] inputBuffer = new char[READ_BLOCK_SIZE];        

         int charRead; 
         while((charRead = isr.read(inputBuffer))>0) 
         { 
           String readString = String.copyValueOf(inputBuffer,0,charRead); 

           s += readString;          
           inputBuffer = new char[READ_BLOCK_SIZE]; 
         }        

       }catch(IOException ioe){ 
         ioe.printStackTrace(); 
       } 
     } 

    public void onDestroy(){ 
      super.onDestroy();     
      if(timer != null){ 
        timer.cancel(); 
      } 
      Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show(); 
    } 

}

來源

2012-11-30 Raphael Thomas Liewl

什麼是行'MyService.java：125'？我想你是從後臺線程調用一些'UI'調用。 –

MyService.java:125 >> lm.requestLocationUpdates（LocationManager.NETWORK_PROVIDER，60000，1000，locationListener）; –

使用處理程序來調用此！ –