Ошибка веб-службы вызова в android

Question

Я пытаюсь вызвать службу WCF на основе .net, используя ksoap2 в Android. При вызове httptransport я получил следующую ошибку.

Вот мой код:

public class MainActivity extends Activity { 
EditText t1,t2; 
Button b1; 
TextView result; 

private static final String NAMESPACE="http://tempuri.org/"; 
private static final String METHOD_NAME="AddEmployee"; 
private static final String URL="http://10.32.4.24/Android/AndroidBus.svc"; 
private static final String SOAP_ACTION="http://tempuri.org/IAndroidBus/AddEmployee"; 
SoapObject request=new SoapObject(NAMESPACE,METHOD_NAME); 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     t1=(EditText)findViewById(R.id.editText1); 
     t2=(EditText)findViewById(R.id.editText2); 
     result=(TextView)findViewById(R.id.textView1); 
     b1=(Button)findViewById(R.id.button1); 
     b1.setOnClickListener(new OnClickListener() 
     { 

      @Override 
      public void onClick(View arg0) { 
      PropertyInfo pi=new PropertyInfo(); 
      pi.setValue("abc"); 
      pi.setName("value1"); 
      //pi.type=PropertyInfo.STRING_CLASS; 
      SoapObject Request=new SoapObject(NAMESPACE,METHOD_NAME); 

      Request.addProperty(pi); 

      SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12); 
      envelope.dotNet=true; 
      envelope.setOutputSoapObject(Request); 

      new servicecall(envelope).execute(); 



      } 

     }); 
    } 

    public class servicecall extends AsyncTask<String,Void,String> 
    { 
     String res; 
     SoapSerializationEnvelope envelope; 
     public servicecall(SoapSerializationEnvelope envelope) 
     { 
      this.envelope=envelope; 
     } 

     @Override 
     protected String doInBackground(String... arg0) { 
      HttpTransportSE ht=new HttpTransportSE(URL); 
      ht.debug=true; 
      try 
      { 
       Log.d("WEBSERVICE","Calling"); 
       ht.call(SOAP_ACTION,envelope); 
       SoapPrimitive response = (SoapPrimitive)envelope.getResponse(); 
       String dump=ht.responseDump.toString(); 
       System.out.println("dumppp"+dump); 
       Log.d("Tag","Response"+response); 
       res=response.toString(); 

      } 
      catch(Exception e) 
      { 
       e.printStackTrace(); 

      } 

      return res; 
     } 

     protected void onPostExecute(String res) { 
      super.onPostExecute(res); 
      result.setText("completed"); 

    } 
    } 

Это ошибка я получаю:

11-08 15:00:24.421: W/System.err(767): java.lang.NullPointerException 
11-08 15:00:24.451: W/System.err(767): at org.ksoap2.transport.ServiceConnectionSE.getResponseProperties(ServiceConnectionSE.java:85) 
11-08 15:00:24.473: W/System.err(767): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:187) 
11-08 15:00:24.483: W/System.err(767): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:114) 
11-08 15:00:24.504: W/System.err(767): at com.example.androidservice.MainActivity$servicecall.doInBackground(MainActivity.java:81) 
11-08 15:00:24.522: W/System.err(767): at com.example.androidservice.MainActivity$servicecall.doInBackground(MainActivity.java:1) 
11-08 15:00:24.533: W/System.err(767): at android.os.AsyncTask$2.call(AsyncTask.java:287) 
11-08 15:00:24.541: W/System.err(767): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 
11-08 15:00:24.661: W/System.err(767): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
11-08 15:00:24.671: W/System.err(767): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
11-08 15:00:24.685: W/System.err(767): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
11-08 15:00:24.711: W/System.err(767): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
11-08 15:00:24.722: W/System.err(767): at java.lang.Thread.run(Thread.java:856) 

Answer 1

Просто позвоните фоновую службу по нажатию кнопки и изменить код в doInBackground metode ниже

    SoapObject request = new SoapObject(NAMESPACE, methode); 
     // Add the input required by web service 

     request.addProperty("abc", value1); 



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

     envelope.setOutputSoapObject(request); 

     HttpTransportSE httpTransport = new HttpTransportSE(URL); 

     httpTransport.call(Action, envelope); 

     Object response = envelope.getResponse(); 

     Log.v("Responce", "Responce:::" + response.toString()); 

     result = response.toString(); 

Answer 2

Убедитесь, что полученный вами ответ не является нулевым.

SoapPrimitive response = (SoapPrimitive)envelope.getResponse(); 
    if(null==response){ 
     return; 
    } 
    else{ 
     //continue processing 
    } 

Working KSOAP code

Answer 3

Пожалуйста, прочитайте эту статью, это объясняет все то, что вы должны сделать. Вы можете восстановить код. Оно работает. http://insightforfuture.blogspot.com/2012/02/accessing-apache-axis2-web-service_24.html