From the past few days, I have been working on an Android code to call a local web service. I am using ksoap libraries for Android to call my SOAP web service created in .NET. However, I feel there is something wrong in my code as the response I get when I call the web service from my app hits a catch block . I tried debugging my Android code but I am still not able to solve my problem.
Please can someone tell me what’s wrong or any other simpler way to do this ?
Here is my Android code I have implemented till now :
package com.demo;
import java.net.SocketException;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.AndroidHttpTransport;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class Login extends Activity {
private static final String SOAP_ACTION = "http://tempuri.org/GetLoginDetails";
private static final String METHOD_NAME = "GetLoginDetails";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://10.0.2.2/testlogin/Service1.asmx";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button signin = (Button) findViewById(R.id.regsubmitbtn);
signin.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
EditText etxt_user = (EditText) findViewById(R.id.usereditlog);
user_id = etxt_user.getText().toString();
EditText etxt_password = (EditText) findViewById(R.id.pwdeditlog);
password = etxt_password.getText().toString();
new LoginTask().execute();
}
});
}
String user_id;
String password;
String auth=null;
private class LoginTask extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(
Login.this);
protected void onPreExecute() {
this.dialog.setMessage("Logging in...");
this.dialog.show();
}
protected Void doInBackground(final Void... unused) {
auth = doLogin("lalit", "lalit");
return null; // don't interact with the ui!
}
protected void onPostExecute(Void result) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
}
private String doLogin(String user_id, String password) {
SoapPrimitive resultstring = null;
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("user", user_id);
request.addProperty("password", password);
SoapSerializationEnvelope soapenvelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
soapenvelope.dotNet = true;
soapenvelope.setOutputSoapObject(request);
AndroidHttpTransport httptransport = new AndroidHttpTransport(URL);
httptransport.debug = true;
try {
httptransport.call(SOAP_ACTION, soapenvelope);
resultstring = (SoapPrimitive) soapenvelope.getResponse();
//Log.d("Authenticaion", resultstring+"");
System.out.println(resultstring);
}
catch (SocketException ex) {
Log.e("Error : " , "Error on soapPrimitiveData() " + ex.getMessage());
ex.printStackTrace();
} catch (Exception e) {
Log.e("Error : " , "Error on soapPrimitiveData() " + e.getMessage());
e.printStackTrace();
}
return resultstring+"";
}
}
}
my web service code :
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Data.SqlClient;
namespace LoginDetails
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{
[WebMethod]
public String GetLoginDetails(string UserName, string Password)
{
try
{
using (SqlConnection myConnection = new SqlConnection(@"Data Source= .\SQLEXPRESS;Initial Catalog=student;User ID=sa;Password=demo"))
{
myConnection.Open();
using (SqlCommand myCommand = new SqlCommand())
{
myCommand.Connection = myConnection;
myCommand.CommandText = "SELECT COUNT(*) FROM Login WHERE UserName = @UserName AND Password = @Password";
myCommand.Parameters.Add("@UserName", SqlDbType.VarChar).Value = UserName;
myCommand.Parameters.Add("@Password", SqlDbType.VarChar).Value = Password;
return (int)myCommand.ExecuteScalar() == 1 ? "success" : "bad username or password";
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return "an error occurred.";
}
}
}
}
my logcat :
10-22 21:49:17.635: DEBUG/dalvikvm(117): GC_EXTERNAL_ALLOC freed 901 objects /
10-22 21:49:18.015: WARN/KeyCharacterMap(117): No keyboard for id 0
10-22 21:49:18.015: WARN/KeyCharacterMap(117): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
10-22 21:49:22.275: INFO/ARMAssembler(58): generated s scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x23df98:0x23e054] in 675711 ns
10-22 21:49:42.025: INFO/System.out(274): an error occurred.
10-22 21:49:42.045: WARN/InputManagerService(58): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44eda178
Working with kSOAP2 can be challenging… i know. But it is a good library and I have been able to get it to work. I have written a little on working with kSOAP2 on Android. I discuss passing simple and complex parameters, receiving arrays, and working with JDBC WebRowSet objects over the wire.
http://roderickbarnes.com/blog/droid-chronicles-web-services-handling-complex-parameters
There are other blog articles on working with kSOAP2 on the site. I hope this helps.