JavaNullPointer異常填充

我執行此代碼的數組：JavaNullPointer異常填充

HttpTransportSE transportSE = new HttpTransportSE(URL); 
      try{ 
       //Web service call 
       transportSE.call(SOAP_ACTION_BRING_NEEDS, envelope); 

       //create SoapPrimitive and obtain response 
       resultsRequestSOAP = (SoapObject)envelope.getResponse(); 

       int intPropertyCount = resultsRequestSOAP.getPropertyCount(); 
       strNeeds = new String[intPropertyCount]; 

       for(int i= 0;i< intPropertyCount; i++) 
       { 
        //strNeeds[i]= resultsRequestSOAP.getPropertyAsString(i).toString(); 
        //Format the information from the web service 
        Object property = resultsRequestSOAP.getProperty(i); 
        if (property instanceof SoapObject) { 
         SoapObject needsList = (SoapObject) property; 
         strNeeds[i] = needsList.getProperty("Descripcion").toString(); 
         strCodeNeeds[i] = needsList.getProperty("Codigo").toString(); 
        } 
       } 
      }catch (Exception e){ 
       exc = true; 
       e.printStackTrace(); 
      }

及其對這行代碼制動：

strCodeNeeds[i] = needsList.getProperty("Codigo").toString();

，不同之處和suppressedExceptions = {[email protected]} = 0上的錯誤java.lang.NullPointerException。

我戴上「needList」迭代「對於」手錶，它包含這樣的結果在position 0 = anyType{Codigo=3; CodigoClase=1; Descripcion=Acceso a puerto; }

和陣列strNeeds[i]被正確填充。

任何想法發生了什麼？謝謝你的建議。

來源

2014-10-02 Elsanty

做的需要sysList.getProperty（「Codigo」），看看你得到什麼。我的猜測是空的。 – Susie 2014-10-02 15:32:16

@Susie我這樣做，我得到正確的價值，我需要needsList.getProperty（「Codigo」）。toString（）= {[email protected]}「3」 – Elsanty 2014-10-02 15:43:48

你在哪裏實例化'strCodeNeeds '？ – 2014-10-02 16:05:00

那麼它會導致教程錯誤！他們忘了初始化strCode需要，

strCodeNeeds = new String[intPropertyCount];

來源

2014-10-02 16:01:30 Elsanty

JavaNullPointer異常填充

回答

相關問題