SOAP in Android

Soap in Android

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 

After that just follow these steps:

-> Creating a folder "libs" in the project
-> Copying the external jars in to the folder
-> Refresh the folder
-> Go to properties -> Build path -> Add Jar (not external JAR)
-> Clean the project
-> Restart Eclipse 

AndroidManifest.xml

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

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

      package="com.pxr.tutorial.soap.weather"

      android:versionCode="1"

      android:versionName="1.0">

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

        <activity android:name=".Main"

                  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-sdk android:minSdkVersion="4" />

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

</manifest> 

Main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <EditText
        android:id="@+id/txt_from_currency" 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="FromCurrency"/>
      <EditText
         android:id="@+id/txt_to_currency" 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="ToCurrency"/> 
     <Button 
         android:id="@+id/btn"
         android:layout_height="wrap_content"
         android:layout_width="fill_parent"
         android:text="Submit"/>
     <TextView  
android:id="@+id/lbl_rate"
   android:layout_width="fill_parent" 
   android:layout_height="fill_parent"   
   android:gravity="center"
   android:textSize="40dip" />
</LinearLayout>

Main.java


public class Main extends Activity {

private final String NAMESPACE = "http://www.webserviceX.NET/";
private final String URL = "http://www.webservicex.net/CurrencyConvertor.asmx";
private final String SOAP_ACTION = "http://www.webserviceX.NET/ConversionRate";
private final String METHOD_NAME = "ConversionRate";
    
    EditText from;
    EditText to;
    Button btn;
    TextView rate;
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        from = (EditText)findViewById(R.id.txt_from_currency);
        to = (EditText)findViewById(R.id.txt_to_currency);
        btn = (Button)findViewById(R.id.btn);        
        rate = (TextView)findViewById(R.id.lbl_rate);
        
        
        btn.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub

String from_ = from.getText().toString();
String to_ = to.getText().toString();

SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 
        
       PropertyInfo _from =new PropertyInfo();
       _from.setName("FromCurrency");
       _from.setValue(from_);
       _from.setType(double.class);
       request.addProperty(_from);
       
       PropertyInfo _to =new PropertyInfo();
       _to.setName("ToCurrency");
       _to.setValue(to_);
       _to.setType(double.class);
       request.addProperty(_to);          
       
        
       SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
       envelope.dotNet = true;
       envelope.setOutputSoapObject(request);
       HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
 
       try 
       {
               
           androidHttpTransport.call(SOAP_ACTION, envelope);          
           SoapPrimitive result = (SoapPrimitive)envelope.getResponse();
          
           //SoapObject result = (SoapObject)envelope.getResponse();
           
           rate.setText(result.toString());

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