[Java\Android] Utilizzo webservice asmx

[ubbicom]

Ciao a tutti.

Grazie all'aiuto del forum ho realizzato la mia applicazione Android che si collega ad un db MySQL in hosting tramite l'utilizzo del web service.

Provata sul tablet l'applicazione funziona ma non mi visualizza l'output previsto dal web service che lanciato sul browser invece funziona correttamente.

In Eclipse il log degli errori è vuoto ma l'output sul tablet è bianco.

Grazie in anticipo a chi potrà dedicare qualche minuto a questa discussione.

package com.ccmex.myFirstApp;

import android.app.Activity;


import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;


import android.os.Bundle;
import android.widget.TextView;


public class WebServiceDemoActivity extends Activity {


    private final String NAMESPACE = "http://www.nomedominio.com/cartelladominio/";
    private final String URL = "http://www.nomedominio.com/cartelladominio/cartellaWebService/StockService.asmx";
    private final String SOAP_ACTION = "http://www.nomedominio.com/cartelladominio/cartellaWebService/StockService";
    private final String METHOD_NAME = "StockService";
    
     public void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         
         SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);          
         SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
         envelope.setOutputSoapObject(request);
         envelope.dotNet = true;
         
         try {
             
             SoapPrimitive response = (SoapPrimitive)envelope.getResponse();
             HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
            
                 androidHttpTransport.call(SOAP_ACTION, envelope);
            
                 TextView tv = new TextView(this);
                 tv.setText(response.toString());
                 setContentView(tv);
                 
       } catch (Exception e) {
             e.printStackTrace();
       }
     }
}

[ubbicom]

Ho fatto alcune modifiche ed adesso ho l'errore applicazione arrestata in modo anomalo, questo è il log:

02-09 11:24:27.550: E/AndroidRuntime(26928): java.lang.NullPointerException

02-09 11:24:27.550: E/AndroidRuntime(26928):     at com.ccmex.myFirstApp.WebServiceDemoActivity$1.run(WebServiceDemoActivity.java:65)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at android.os.Handler.handleCallback(Handler.java:605)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at android.os.Handler.dispatchMessage(Handler.java:92)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at android.os.Looper.loop(Looper.java:137)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at android.app.ActivityThread.main(ActivityThread.java:4424)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at java.lang.reflect.Method.invokeNative(Native Method)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at java.lang.reflect.Method.invoke(Method.java:511)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)

02-09 11:24:27.550: E/AndroidRuntime(26928):     at dalvik.system.NativeStart.main(Native Method)

Questa la classe java WebServiceDemoActivity:

package com.ccmex.myFirstApp;

import android.app.Activity;


import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;


import android.os.Bundle;
import android.os.Handler;
import android.widget.TextView;


public class WebServiceDemoActivity extends Activity {


    private final String NAMESPACE = "http://www.miodominio.com/WebService";
    private final String URL = "http://www.miodominio.com/cartelladominio/WebService.asmx";
    private final String SOAP_ACTION = "http://www.miodominio.com/WebService/GetCustomers";
    private final String METHOD_NAME = "GetCustomers";


    private String Webresponse = "";
    private TextView textView;
    private Thread thread;
    private Handler handler = new Handler();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        textView = (TextView) findViewById(R.id.textView1);
        webAccess();
    }


    public void webAccess() {
        thread = new Thread() {
            public void run() {
                try {
                    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.call(SOAP_ACTION, envelope);
                    SoapPrimitive response = (SoapPrimitive) envelope
                            .getResponse();
                    Webresponse = response.toString();
                }


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


                handler.post(createUI);
            }
        };


        thread.start();
    }


    final Runnable createUI = new Runnable() {
        public void run() {
            textView.setText(Webresponse);
        }
    };


}

Il problema è su questa chiamata:

    final Runnable createUI = new Runnable() {
        public void run() {
            textView.setText(Webresponse);
        }
    };

Se la elimino non ho errore ma non ho l'output del webservice sul tablet.

[ubbicom]

Risolto grazie a questo tutorial, lo posto forse servirà a qualcuno:
http://java.dzone.com/articles/invok...rvices-android