Android Web Service with .NET using SOAP

In this post I'm going to illustrate how we can access web service in Android usingksoap2-android project that provides a lightweight and efficient SOAP library for the Android platform. 

You can download the jar file from following link; 
http://ksoap2-android.googlecode.com/svn/m2-repo/com/google/code/ksoap2-android/ksoap2-android-assembly/2.5.8/ksoap2-android-assembly-2.5.8-jar-with-dependencies.jar 

Here is the sample code that illustrate SOAP web service call. I have access a live web service ConvertWeight from http://www.webserviceX.NET/ which convert weight from one unit to another. I have set "envelope.dotNet = true;" in Line 53 since I'm accessing .NET web service. You can comment that line if your web service is not .NET one. 

package com.sencide;  

import org.ksoap2.SoapEnvelope;

import org.ksoap2.serialization.PropertyInfo;

import org.ksoap2.serialization.SoapObject;

import org.ksoap2.serialization.SoapPrimitive;

import org.ksoap2.serialization.SoapSerializationEnvelope;

import org.ksoap2.transport.HttpTransportSE;  

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.widget.TextView;

  

public class AndroidWebService extends Activity {

   

    private final String NAMESPACE = "http://www.webserviceX.NET/";

    private final String URL = "http://www.webservicex.net/ConvertWeight.asmx";

    private final String SOAP_ACTION = "http://www.webserviceX.NET/ConvertWeight";

    private final String METHOD_NAME = "ConvertWeight";

  

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

  

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

       

        String weight = "3700";

        String fromUnit = "Grams";

        String toUnit = "Kilograms";

       

        PropertyInfo weightProp =new PropertyInfo();

        weightProp.setName("Weight");

        weightProp.setValue(weight);

        weightProp.setType(double.class);

        request.addProperty(weightProp);

          

        PropertyInfo fromProp =new PropertyInfo();

        fromProp.setName("FromUnit");

        fromProp.setValue(fromUnit);

        fromProp.setType(String.class);

        request.addProperty(fromProp);

          

        PropertyInfo toProp =new PropertyInfo();

        toProp.setName("ToUnit");

        toProp.setValue(toUnit);

        toProp.setType(String.class);

        request.addProperty(toProp);

         

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

        envelope.dotNet = true;

        envelope.setOutputSoapObject(request);

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

  

        try {

            androidHttpTransport.call(SOAP_ACTION, envelope);

            SoapPrimitive response = (SoapPrimitive)envelope.getResponse();

            Log.i("myApp", response.toString());

     

            TextView tv = new TextView(this);

            tv.setText(weight+" "+fromUnit+" equal "+response.toString()+ " "+toUnit);

            setContentView(tv);

  

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}




You have to add INTERNET permission to AndroidManifest.xml as follows; 

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

      package="com.sencide"

      android:versionCode="1"

      android:versionName="1.0">

    <application android:icon="@drawable/icon" android:label="@string/app_name">

        <activity android:name=".AndroidWebService"

                  android:label="@string/app_name">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

     

    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

</manifest>







You can download the source code of above project (Password:sara). 

I have updated my previous code in the post Android Login Screen Using HttpClientto authenticate users from web service. There I have illustrate how you can start new activity if the login is successful. 

You can download the updated source code with sample .NET web service application (Password:sara).