I created a simple class for call web service
public class CallSoap {
    public final String SOAP_ACTION = "http://tempuri.org/Add";
    public  final String OPERATION_NAME = "Add"; 
    public  final String WSDL_TARGET_NAMESPACE = "http://tempuri.org/";
    public  final String SOAP_ADDRESS = "http://localhost:41614/Service1.asmx";
    public CallSoap() 
    { 
    }
    public String Call(int a,int b)
    {
    SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE,OPERATION_NAME);
    request.addProperty("a",a);
    request.addProperty("b",b);
    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.dotNet = true;
    envelope.setOutputSoapObject(request);
    HttpTransport httpTransport = new HttpTransport(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 Activity click method
public void clickData(View v)
{
    //Intent intent = new Intent(this, DisplayMessageActivity.class);
    EditText et=(EditText) findViewById(R.id.editText1);
    EditText et2=(EditText) findViewById(R.id.editText2);
    TextView tv=(TextView) findViewById(R.id.textView1);
    int a=Integer.parseInt(et.getText().toString());
    int b=Integer.parseInt(et2.getText().toString()); 
    CallSoap cs=new CallSoap();
    tv.setText(cs.Call(a, b));
}
There is an error "Unportunately App1 has sttoped". Please help me..
 
     
     
    