面向BaseClassLoader.Class在Ksoap2調用Android時未發現運行時錯誤調用

我正在爲我的android應用程序開發使用eclipse Helios。我做了一個.Net網絡服務，然後我製作了一個android應用程序，我在其中使用Ksoap2 jar文件調用web服務。我看到這個鏈接幫助http://www.codeproject.com/Articles/304302/Calling-Asp-Net-Webservice-ASMX-From-an-Android-Ap求助我下載與依賴了Android ksoap2.jar文件然後使用構建路徑每一件事情順利，但添加的jar文件每當我運行或調試程序的時候，給我一個錯誤隨叫隨到肥皂方法 BaseClassLoader.Class未找到錯誤請附上源在log cat中，它的節目找不到類org.ksoap2.serialization。 SOAP對象甚至是類存在於庫面向BaseClassLoader.Class在Ksoap2調用Android時未發現運行時錯誤調用

This is my soap class 

package com.nrf; 
import org.ksoap2.SoapEnvelope; 
import org.ksoap2.serialization.SoapSerializationEnvelope; 
import org.ksoap2.transport.HttpTransportSE; 
import org.ksoap2.serialization.PropertyInfo; 
import org.ksoap2.serialization.SoapObject; 


public class CallSoap 
{ 
    public String SOAP_ACTION; 

    public String OPERATION_NAME; 

    public final String WSDL_TARGET_NAMESPACE = "NRF_Cargo_App"; 

    public final String SOAP_ADDRESS = "http://localhost:5265/NRF_Cargo_Service.asmx"; 

    public CallSoap() 
    { 
    } 

    public String Call(String a,String b) 
    { 
      SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE,OPERATION_NAME); 
      PropertyInfo pi = new PropertyInfo(); 

      pi.setName("userName"); 
      pi.setValue(a); 
      pi.setType(String.class); 
      request.addProperty(pi); 

      pi=new PropertyInfo(); 
      pi.setName("Password"); 
      pi.setValue(b); 
      pi.setType(String.class); 
      request.addProperty(pi); 

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

      envelope.setOutputSoapObject(request); 

      HttpTransportSE httpTransport = new HttpTransportSE(SOAP_ADDRESS); 
      Object response=null; 

    try 
    { 
      httpTransport.call(SOAP_ACTION, envelope); 
      response = envelope.getResponse(); 

    } 
    catch (Exception exception) 
    { 
      response=exception.toString(); 
    } 
      return response.toString(); 
    } 
} 

This is my MainActivityclass 

package com.nrf; 
import android.os.Bundle; 
import android.app.Activity; 
import android.content.Intent; 
import android.view.Menu; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class MainActivity extends Activity 
{ 

Button btnlogin; 

@Override 
protected void onCreate(Bundle savedInstanceState) 
{ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     btnlogin = (Button) findViewById(R.id.btnsign);   

     btnlogin.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 

       CallSoap cs = new CallSoap(); 
       cs.OPERATION_NAME = "UserLogin"; 
       cs.SOAP_ACTION ="NRF_Cargo_App/UserLogin"; 
       String resp=cs.Call("Numair", "1234"); 

      } 
     }); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 

     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

} 

Please help me for making this app run 
or suggest me another easy way of calling .net web-service in android.Thanks

錯誤記錄貓

http://i.stack.imgur.com/mi5hN.png

來源

2014-06-18 user2731688