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javaandroideclipseweb-servicesasmx

Using KSOAP in Android to access Webservice don't work


i'm using the webservice from http://www.w3schools.com/webservices/tempconvert.asmx

But I can't get out any data...

This is my code:

public class MainActivity extends Activity {

private static final String SOAP_ACTION="http://tempuri.org/CelsiusToFahrenheit";
private static final String METHOD_NAME="CelsiusToFahrenheit";
private static final String NAMESPACE="http://tempuri.org/";
private static final String URL="http://www.w3schools.com/webservices/tempconvert.asmx";



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    TextView tv = (TextView) findViewById(R.id.textView1);


    SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);
    Request.addProperty("Celsius", "32");

    SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    soapEnvelope.dotNet = true;
    soapEnvelope.setOutputSoapObject(Request);

    HttpTransportSE aht = new HttpTransportSE(URL);

    try{
        aht.call(SOAP_ACTION, soapEnvelope);
        SoapPrimitive resultString = (SoapPrimitive)soapEnvelope.getResponse();
        tv.setText("Farenheit: " + resultString);
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}

Ps: I have imported ksoap2-android-assembly-3.2.0-jar-with-dependencies.jar

and I have set permission for internet

please help


Solution

  • Solved it with a Asynctask => AsyncCallWS, thnx Raghunandan.

    Remember to download the Ksoap from here

    and add it to the libs folder in Eclipse

    Here is all my code:

    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.os.AsyncTask;
    
    
    
    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.activity_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");
            }
    
        }   
    }
    

    I had to add permission in Manifest for internet, otherwise I got null as response.

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

    And this is my layout.xml file:

        <?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>
    

    PS: If you have created your own WebService in Asp.Net and made it public, remember to change default namespace http://tempuri.org/ to something unique.

    You change it in the WebService.asmx.cs

    Like this:

    [WebService(Namespace = "http://microsoft.com/webservices/")]