Android code for calling web service giving "application stopped unexpectedly" error

Question

I have trying this for some time now but I am not able to get proper output.I am facing a problem calling the web service from my Android code. My web service code returns a string with a delimiter '#' in between. Now i need to make a code in Android that will call the web service , separate the delimiters such that the actual names are displayed using a check box for the user to select

Here is my Android code :

    package com.sencide;

    import java.net.SocketException;
    import android.app.Activity;
    import android.app.AlertDialog;
    import android.content.DialogInterface;
    import android.os.Bundle;
    import android.widget.TextView;
    import org.ksoap2.SoapEnvelope;
    import org.ksoap2.serialization.SoapObject;
    import org.ksoap2.serialization.SoapPrimitive;
    import org.ksoap2.serialization.SoapSerializationEnvelope;
    import org.ksoap2.transport.HttpTransportSE;


    public class TestApp extends Activity {

private static final String SOAP_ACTION = "http://tempuri.org/getData";

    private static final String METHOD_NAME = "getData";

    private static final String NAMESPACE = "http://tempuri.org/";
    private static final String URL = "http://10.0.2.2/login2/Service1.asmx";
    TextView tv;

boolean[] bln1=null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    tv=(TextView)findViewById(R.id.text1);


    String[] arr2= call();
    boolean[] bln = {false, false, false};

     bln1 = new boolean[arr2.length];


    new AlertDialog.Builder(TestApp.this)
    .setIcon(R.drawable.alert_dialog_icon)
    .setTitle("Title")
    .setMultiChoiceItems(arr2,
            bln,
            new DialogInterface.OnMultiChoiceClickListener() {
                public void onClick(DialogInterface dialog, int whichButton,
                        boolean isChecked) {


                    if(isChecked){
                        bln1[whichButton] = true;
                    }
                    else{
                        bln1[whichButton] = false;
                    }
                }
            })
      .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {


        }
      })
      .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {


        }
      })
     .show();


      }


      public String[] call()
     {
    SoapPrimitive responsesData = null; 

    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 

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

    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

    androidHttpTransport.debug = true; 

    try {

    androidHttpTransport.call(SOAP_ACTION, envelope);

    responsesData = (SoapPrimitive) envelope.getResponse(); 
    System.out.println(" --- response ---- " + responsesData); 

    } catch (SocketException ex) { 
    ex.printStackTrace(); 
    } catch (Exception e) { 
    e.printStackTrace(); 
    } 
    System.out.println( " ----" + responsesData );

    String serviceResponse= responsesData .toString(); 


    String[] temp; 
    String delimiter = "#"; 
    temp= serviceResponse.split(delimiter);
    System.out.println( " ---- length ---- " + temp.length); 

    return temp; 
    }


   }

Please can anyone help me solve my problem since everytime I run the code I get an error saying "Application terminated unexpectedly"

Thanks

Answer 1

You are calling the web service in the UI thread, which means that the UI thread is blocked till you get the response from the web service. Since Android is a mobile OS, it terminates blocked threads to improve performance.

Try writing the web service call in an Async Task. Using an Async task you can run the web service call in a background thread and your UI thread wouldn't be blocked.

That should solve your problem.