Can't connect to WCF service on Android

Question

I am trying to connect to a .NET WCF service in Android using kSOAP2 (v 2.1.2), but I keep getting a fatal exception whenever I try to make the service call. I'm having a bit of difficulty tracking down the error and can't seem to figure out why it's happening. The code I am using is below:

package org.example.android;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransport;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;

public class ValidateUser extends Activity {
    private static final String SOAP_ACTION = "http://tempuri.org/mobile/ValidateUser";
    private static final String METHOD_NAME = "ValidateUser";
    private static final String NAMESPACE = "http://tempuri.org/mobile/";    
    private static final String URL = "http://192.168.1.2:8002/WebService.Mobile.svc"; 

     /** Called when the activity is first created. */ 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);     
        setContentView(R.layout.validate_user);

        Intent intent = getIntent();

        Bundle extras = intent.getExtras();

        if (extras == null) {
         this.finish();
        }
        String username = extras.getString("username");
        String password = extras.getString("password");                               

        Boolean validUser = false;


        try {
         SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
            PropertyInfo uName = new PropertyInfo();
            uName.name = "userName";

            PropertyInfo pWord = new PropertyInfo();
            pWord.name = "passWord";

            request.addProperty(uName, username);
            request.addProperty(pWord, password);

            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
            envelope.dotNet = true;
            envelope.setOutputSoapObject(request);

            HttpTransport androidHttpTransport = new HttpTransport(URL);
            androidHttpTransport.call(SOAP_ACTION, envelope); // error occurs here

         Integer userId = (Integer)envelope.getResponse();
         validUser = (userId != 0);
        } catch (Exception ex) {

        }            
    }

    private void exit () {
        this.finish();
    }
}

EDIT: Remove the old stack traces. In summary, the first problem was the program being unable to open a connection due to missing methods or libraries due to using vanilla kSOAP2 rather than a modified library for Android (kSOAP2-Android). The second issue was a settings issue. In the Manifest I did not add the following setting:

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

I am now having an issue with the XMLPullParser which I need to figure out.

12-23 10:58:06.480: ERROR/SOCKETLOG(210): add_recv_stats recv 0

12-23 10:58:06.710: WARN/System.err(210): org.xmlpull.v1.XmlPullParserException: unexpected type (position:END_DOCUMENT null@1:0 in java.io.InputStreamReader@433fb070)

12-23 10:58:06.710: WARN/System.err(210): at org.kxml2.io.KXmlParser.exception(KXmlParser.java:243)

12-23 10:58:06.720: WARN/System.err(210): at org.kxml2.io.KXmlParser.nextTag(KXmlParser.java:1363)

12-23 10:58:06.720: WARN/System.err(210): at org.ksoap2.SoapEnvelope.parse(SoapEnvelope.java:126)

12-23 10:58:06.720: WARN/System.err(210): at org.ksoap2.transport.Transport.parseResponse(Transport.java:63)

12-23 10:58:06.720: WARN/System.err(210): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:100)

12-23 10:58:06.730: WARN/System.err(210): at org.example.android.ValidateUser.onCreate(ValidateUser.java:68)

12-23 10:58:06.730: WARN/System.err(210): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1122)

12-23 10:58:06.730: WARN/System.err(210): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2104)

12-23 10:58:06.730: WARN/System.err(210): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2157)

12-23 10:58:06.730: WARN/System.err(210): at android.app.ActivityThread.access$1800(ActivityThread.java:112)

12-23 10:58:06.730: WARN/System.err(210): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1581)

12-23 10:58:06.730: WARN/System.err(210): at android.os.Handler.dispatchMessage(Handler.java:88)

12-23 10:58:06.730: WARN/System.err(210): at android.os.Looper.loop(Looper.java:123)

12-23 10:58:06.730: WARN/System.err(210): at android.app.ActivityThread.main(ActivityThread.java:3739)

12-23 10:58:06.730: WARN/System.err(210): at java.lang.reflect.Method.invokeNative(Native Method)

12-23 10:58:06.730: WARN/System.err(210): at java.lang.reflect.Method.invoke(Method.java:515)

12-23 10:58:06.730: WARN/System.err(210): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)

12-23 10:58:06.730: WARN/System.err(210): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497)

12-23 10:58:06.730: WARN/System.err(210): at dalvik.system.NativeStart.main(Native Method)

Answer 1

Got this working. There were some issues as mentioned above with the Manifest file. On top of that the NAMESPACE, SOAP_ACTION, and URL parameters were incorrect. The NAMESPACE required "uri:" to be pre-pended to it, as did SOAP_ACTION. The URL needed to have an endpoint specified so instead of http://192.168.1.2:8002/WebService.Mobile.svc it needed to be http://192.168.1.2:8002/WebService.Mobile.svc/Mobile. Connection issues resolved, just need to figure out the data transport thing now.

Answer 2

I have tried your solution but it does not work. I found a solution in which you only need to change Soap Action and rest is same like consuming asmx webservice like this

String SOAP_ACTION = "http://tempuri.org/ServiceContactName/MethodName"; like in if my service contract is IService and method name is HelloAndroid the this will be like SOAP_ACTION = "http://tempuri.org/IService/HelloAndroid"; METHOD_NAME = "HelloAndroid"; NAMESPACE = "http://tempuri.org/"; URL = "http://192.168.1.1:80/android/Service1.svc";

Answer 3

Hello I am getting the same error.

org.xmlpull.v1.XmlPullParserException: unexpected type (position:END_DOCUMENT null@1:0 in java.io.InputStreamReader

Has anyone find the solution ???????????? Please guide....am really stuck