如何在服務實現LocatonListener的線程中顯示Toast？

Question

我有類GPSTracker擴展Service實現LocationListener。 Insinde onLocationChanged（），我有一個線程，我想顯示吐司「ABC」，我該怎麼做？ Plz幫助我？

public void onLocationChanged(Location location) { 
     //Log.d(TAG, "Your Location is - \nLat: " + latitude + "\nLong: " + longitude); 
     // update location here 
     String regChildID = SharePreferenceData.getCheckedRegister(mContext); 

      if (regChildID.split(",")[0].equalsIgnoreCase("1")) { 

       try { 
        String locationData; 
        String regID = regChildID.split(",")[2]; 
        locationData = URLEncoder.encode("reg_child_id", "UTF-8") + "=" + URLEncoder.encode(regID.substring(0, regID.length()-1), "UTF-8"); 
        locationData += "&" + URLEncoder.encode("lat", "UTF-8") + "=" + URLEncoder.encode(String.valueOf(latitude), "UTF-8"); 
        locationData += "&" + URLEncoder.encode("long", "UTF-8") + "=" + URLEncoder.encode(String.valueOf(longitude), "UTF-8"); 
        numberRequest = numberRequest +1; 
        final String data = locationData; 
        new Thread(new Runnable() { 

         @Override 
         public void run() { 
          String response = HttpRequest.sendData(Def.HTTP_METHOD_POST, Def.LOCATION_API, data); 
          if (response != null) { 
           //Log.d(TAG, "Response from server: " + data); 
           Log.d(TAG, "Response from server: " + response); 
           Log.d(TAG, "Number request update: " + numberRequest); 
           new Handler(Looper.getMainLooper()).post(new Runnable() { 

            @Override 
            public void run() { 
             Toast.makeText(getApplicationContext(), "asd", Toast.LENGTH_SHORT).show(); 
            } 
           }); 
          }else { 
           Log.d(TAG, "Number request update: " + "No response from server"); 
          } 
         } 
        }).start(); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 

     } 

==================================>更新我的解決方案

謝謝大家，我剛剛做到了。我把，我在構造器類擴展服務調用上下文，內螺紋我做這樣的代碼，謝謝@busylee

new Thread(new Runnable() { 

         @Override 
         public void run() { 
          ... 
        new Handler(Looper.getMainLooper()).post(new Runnable() { 

            @Override 
            public void run() { 
             Toast.makeText(mContext, "abc", Toast.LENGTH_SHORT).show(); 
            } 
           }); 
          ... 
        }).start(); 

Answer 1

所有你需要定義Handler內螺紋你服務正在運行，並張貼Runnable它。此代碼可以幫助你：

Handler handler = new Handler(); 

new Thread(new Runnable() { 

         @Override 
         public void run() { 
          ... 
          handler.post(new Runnable() { 

            @Override 
            public void run() { 
             Toast.makeText(getApplicationContext(), "asd", Toast.LENGTH_SHORT).show(); 
            } 
          ... 
        }).start(); 

希望它可以幫助

Answer 2

可以顯示敬酒消息，就像那個..

new Thread(new Runnable() { 

     @Override 
     public void run() { 


      //your code is here 


      MainActivity.this.runOnUiThread(new Runnable() { 

       @Override 
       public void run() { 


         Toast.makeText(context, "Your messsage", Toast.LENGTH_LONG).show();     



       } 
      }); 
     } 
    }).start();