calling .net web service with android using ksoap2

Question

I am new in android programming (first project) and i need help on making my code to work... ok, so I have a method that would call the webservice and get the string from there. And it is working on the avd (on 2.2)

Here is the code:

public void NewCall(int Position)
{
    String SOAP_ACTION = "http://tempuri.org/";
    String NAMESPACE = "http://tempuri.org/";
    String METHOD_NAME = "";
    String URL = "http://test.com/Service1.asmx?WSDL";

    if(Position == 0)
    {
        SOAP_ACTION += "Method1";
        METHOD_NAME = "Method1";
    }
    else if(Position == 1)
    {
        SOAP_ACTION += "Method2";
        METHOD_NAME = "Method2";
    }
    else if(Position == 2)
    {
        SOAP_ACTION += "Method3";
        METHOD_NAME = "Method3";
    }
    else if(Position == 3)
    {
        SOAP_ACTION += "Method4";
        METHOD_NAME = "Method4";
    }

    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

    envelope.setOutputSoapObject(request);
    envelope.dotNet = true;

    try 
    {
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapObject result = (SoapObject)envelope.bodyIn;

        if(result != null)
        {
            String textRez = result.getProperty(0).toString();

            addRow(textRez); //method for inserting new row in the database

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

But as i read, you can not do this in the 'main thread' with android 3.0+ , and as a solution I saw that you can do it with AsyncClass. And regarding this, i tried to combine examples i found, with my code, but it has not given me the result yet... What i think is that i need to parse the Position as Integer to the AssyncClass, do the code needed in doInBackground, and then i need to get the result as a String. I tried to compose something similar like this, but it gave me no success...

So if someone of you can help/guide me on solving this problem, i would be very grateful.

Thanks .

Edit: This is how i tried with using AsyncClass:

private class wsGet extends AsyncTask<String, Void, String>
{

    @Override
    protected String doInBackground(String... params) {
    int Position = Integer.parseInt(params[0]); 
    String SOAP_ACTION = "http://tempuri.org/";
    String NAMESPACE = "http://tempuri.org/";
    String METHOD_NAME = "";
    String URL = "http://test.com/Service1.asmx?WSDL";


    if(Position == 0)
    {
        SOAP_ACTION += "Method1";
        METHOD_NAME = "Method1";
    }
    else if(Position == 1)
    {
        SOAP_ACTION += "Method2";
        METHOD_NAME = "Method2";
    }
    else if(Position == 2)
    {
        SOAP_ACTION += "Method3";
        METHOD_NAME = "Method3";
    }
    else if(Position == 3)
    {
        SOAP_ACTION += "Method4";
        METHOD_NAME = "Method4";
    }

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

        envelope.setOutputSoapObject(request);
        envelope.dotNet = true;

        try 
        {
            HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
            androidHttpTransport.call(SOAP_ACTION, envelope);
            SoapObject result = (SoapObject)envelope.bodyIn;

            if(result != null)
            {
                tekstRez = result.getProperty(0).toString();

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

        return tekstRez;
    }

And then for calling this i tried with:

public void NewTenders(int Pos)
{
    String Position = String.valueOf(Pos);

    String[] params= {Position}; //to pass to doInBackground

    //Pass your args array and the current activity to the AsyncTask    

    String tekst = "";
    try {
        tekst = new wsGet().execute(params).get();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ExecutionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }addRow(tekst);

Though, it didn't work for me...

Answer 1

From android 3.0+ you cannot call web service from the main thread. write this whole code in the DoInBackground of your AsyncClass.

the AsyncClass cannot return value to the calling class. The return here passe the value to onPostExecute. use the folloing function in your AsyncClass

protected void onPostExecute(String result) 
{
//from here you have to pass your value to your main class
}