Hello
 
I am new to android , i am developing android application which has log in through dot net web services but my code is not working out.
 
Here is my code 
my main activity it is named as CheckDNLoginActivity.java
 
public class CheckDNLoginActivity extends Activity {
    //Set Error Status
    static boolean errored = false;
    Button b;
    TextView statusTV;
    EditText userNameET , passWordET;    
    ProgressBar webservicePG;
    String editTextUsername;
    boolean loginStatus;
    String editTextPassword;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //Name Text control
        userNameET = (EditText) findViewById(R.id.editText1);
        passWordET = (EditText) findViewById(R.id.editText2);
        //Display Text control
        statusTV = (TextView) findViewById(R.id.tv_result);
        //Button to trigger web service invocation
        b = (Button) findViewById(R.id.button1);
        //Display progress bar until web service invocation completes
        webservicePG = (ProgressBar) findViewById(R.id.progressBar1);
        //Button Click Listener
        b.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                //Check if text controls are not empty
                if (userNameET.getText().length() != 0 && userNameET.getText().toString() != "") {
                    if(passWordET.getText().length() != 0 && passWordET.getText().toString() != ""){
                        editTextUsername = userNameET.getText().toString();
                        editTextPassword = passWordET.getText().toString();
                        statusTV.setText("");
                        //Create instance for AsyncCallWS
                        PostDataAsyncTask task = new PostDataAsyncTask();
                        //Call execute 
                        task.execute();
                    }
                    //If Password text control is empty
                    else{
                        statusTV.setText("Please enter Password");
                    }
                //If Username text control is empty
                } else {
                    statusTV.setText("Please enter Username");
                }
            }
        });
    }
    
    private class PostDataAsyncTask extends AsyncTask<String, Void, Void> {
        @Override
        protected Void doInBackground(String... params) {
            //Call Web Method
            loginStatus = WebService.invokeLoginWS(editTextUsername,editTextPassword,"AuthenticateUser");
            return null;
        }
        @Override
        //Once WebService returns response
        protected void onPostExecute(Void result) {
            //Make Progress Bar invisible
            webservicePG.setVisibility(View.INVISIBLE);
            Intent intObj = new Intent(CheckDNLoginActivity.this,HomeActivity.class);
            //Error status is false
            if(!errored){
                //Based on Boolean value returned from WebService
                if(loginStatus){
                    //Navigate to Home Screen
                    startActivity(intObj);
                }else{
                    //Set Error message
                    statusTV.setText("Login Failed, try again");
                }
            //Error status is true    
            }else{
                statusTV.setText("Error occured in invoking webservice");
            }
            //Re-initialize Error Status to False
            errored = false;
        }
        @Override
        //Make Progress Bar visible
        protected void onPreExecute() {
            webservicePG.setVisibility(View.VISIBLE);
        }
        @Override
        protected void onProgressUpdate(Void... values) {
        }
    }    
}
 
 
HERE IS MY WEB SERVICES CODE BELOW
 
public class WebService {
    //Namespace of the Webservice - can be found in WSDL
    private static String NAMESPACE = "http://tempuri.org/";
    //Webservice URL - WSDL File location    
    private static String URL = "http://198.7.57.72:8080/PropertytaxWB.asmx";//Make sure you changed IP address
    //SOAP Action URI again Namespace + Web method name
    private static String SOAP_ACTION = "http://tempuri.org/WS_Get_UserProfile";
    
    public static boolean invokeLoginWS(String userName,String passWord, String webMethName) {
        boolean loginStatus = false;
        // Create request
        SoapObject request = new SoapObject(NAMESPACE, webMethName);
        // Property which holds input parameters
        PropertyInfo unamePI = new PropertyInfo();
        PropertyInfo passPI = new PropertyInfo();
        // Set Username
        unamePI.setName("User_Name");
        // Set Value
        unamePI.setValue(userName);
        // Set dataType
        unamePI.setType(String.class);
        // Add the property to request object
        request.addProperty(unamePI);
        //Set Password
        passPI.setName("User_Password");
        //Set dataType
        passPI.setValue(passWord);
        //Set dataType
        passPI.setType(String.class);
        //Add the property to request object
        request.addProperty(passPI);
        // Create envelope
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        // Set output SOAP object
        envelope.setOutputSoapObject(request);
        // Create HTTP call object
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        try {
            // Invoke web service
            androidHttpTransport.call(SOAP_ACTION+webMethName, envelope);
            // Get the response
            SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
            // Assign it to  boolean variable variable
            loginStatus = Boolean.parseBoolean(response.toString());
        } catch (Exception e) {
            //Assign Error Status true in static variable 'errored'
            CheckDNLoginActivity.errored = true;
            e.printStackTrace();
        } 
        //Return booleam to calling object
        return loginStatus;
    }
}