work with SOAP(Simple Object Access Protocol) webservice in android

Hello,

Today I am going to share the code to how to work with SOAP webservice.

For this you have to add ksoap2 jar file in your project.You can download the jar file from the following websites :

-> ksoap2

->ksoap2

After this we will continue with our code,today I going to share the code for changing Celsius to Fahrenheit .

Visit the website of the W3Schools web service that we'll use in this tutorial. You'll see that there are two operations, CelsiusToFahrenheit and FahrenheitToCelsius. The name of each operation is self-explanatory. The web service's URL is the base URL that we'll use to connect to the web service.  

For now I will use CelsiousToFahrenheit.

Now lets move to the coding part:

First make a layout for entering Celsius value in edittext and a textview to show the value of Fahrenheit  ,with button which will handle the onclick listenser. I have named it : main.xml  :

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

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:text="Celsius to Farenheit"
        android:textSize="30dp" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:numeric="integer"
        android:singleLine="true" />

    <Button
        android:id="@+id/button1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:gravity="center"
        android:text="Convert to Farenheit" />

    <TextView
        android:id="@+id/tv_result"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="" android:textSize="26dp"/>


</LinearLayout>

Now let's  move to the java class .I have named it MainActivity.class:

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
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 com.example.webserviceactivity.R;

import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {
private final String NAMESPACE = "http://www.w3schools.com/webservices/";
private final String URL = "http://www.w3schools.com/webservices/tempconvert.asmx";
private final String SOAP_ACTION = "http://www.w3schools.com/webservices/CelsiusToFahrenheit";
private final String METHOD_NAME = "CelsiusToFahrenheit";
private String TAG = "PGGURU";
private static String celcius;
private static String fahren;
Button b;
TextView tv;
EditText et;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//Celcius Edit Control
et = (EditText) findViewById(R.id.editText1);
//Fahrenheit Text control
tv = (TextView) findViewById(R.id.tv_result);
//Button to trigger web service invocation
b = (Button) findViewById(R.id.button1);
//Button Click Listener
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//Check if Celcius text control is not empty
if (et.getText().length() != 0 && et.getText().toString() != "") {
//Get the text control value
celcius = et.getText().toString();
//Create instance for AsyncCallWS
AsyncCallWS task = new AsyncCallWS();
//Call execute 
task.execute();
//If text control is empty
} else {
tv.setText("Please enter Celcius");
}
}
});
}

public void getFahrenheit(String celsius) {
//Create request
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
//Property which holds input parameters
PropertyInfo celsiusPI = new PropertyInfo();
//Set Name
celsiusPI.setName("Celsius");
//Set Value
celsiusPI.setValue(celsius);
//Set dataType
celsiusPI.setType(double.class);
//Add the property to request object
request.addProperty(celsiusPI);
//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 {
//Invole web service
androidHttpTransport.call(SOAP_ACTION, envelope);
//Get the response
SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
//Assign it to fahren static variable
fahren = response.toString();

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

private class AsyncCallWS extends AsyncTask<String, Void, Void> {
@Override
protected Void doInBackground(String... params) {
Log.i(TAG, "doInBackground");
getFahrenheit(celcius);
return null;
}

@Override
protected void onPostExecute(Void result) {
Log.i(TAG, "onPostExecute");
tv.setText(fahren + "° F");
}

@Override
protected void onPreExecute() {
Log.i(TAG, "onPreExecute");
tv.setText("Calculating...");
}

@Override
protected void onProgressUpdate(Void... values) {
Log.i(TAG, "onProgressUpdate");
}

}

}

that's all..hope you like this post for SOAP PARSING.