Android ksoap2拋出異常與AsyncTask

我有一個函數，連接到一個Web服務並返回SoapObject。如果我在沒有AsyncTask的情況下直接調用它，但是下面的代碼拋出一個異常，這個函數沒有問題。有什麼建議麼？Android ksoap2拋出異常與AsyncTask

private class LoginTask extends AsyncTask<String, Object, Object> { 
    protected SoapObject doInBackground(String... params) { 
     try 
     { 
      return callWebService("a","a");   
     } 
     catch (Exception e) 
     { 
      return null; 
     } 
    } 
    protected void onPostExecute(SoapObject result) { 
     setErrorText(result); 
    } 

} 

private SoapObject callWebService(String UserName, String Password) { 

    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 
    request.addProperty("UserName", UserName); 
    request.addProperty("Password", Password); 

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
    envelope.dotNet = true; 
    envelope.setOutputSoapObject(request); 

    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); 
    androidHttpTransport.debug = true; 

    try { 
     androidHttpTransport.call(SOAP_ACTION, envelope); 
     SoapObject response = (SoapObject) envelope.getResponse(); //this code causes the problem 
     return response; 
    } catch (IOException e) { 
     e.printStackTrace(); 
     return null; 
    } catch (XmlPullParserException e) { 
     e.printStackTrace(); 
     return null; //Directly jumps to here 
    } 

}

來源

2012-11-07 user1805390

你有什麼異常？ – Venkat

我加了callWebService函數。代碼直接跳轉到返回null ;. – user1805390

你被問到異常而不是方法 –

如果從改變你對任務的聲明：

private class LoginTask extends AsyncTask<String, Object, Object>

到

private class LoginTask extends AsyncTask<String, Object, SoapObject>

您onPostExecute（）應該執行。

來源

2012-11-28 16:48:18

Android ksoap2拋出異常與AsyncTask

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