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01-31 12:27:51.238  15927-15951/? E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
    Process: com.sami.hello.databasetest, PID: 15927
    java.lang.RuntimeException: An error occured while executing doInBackground()
            at android.os.AsyncTask$3.done(AsyncTask.java:304)
            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
            at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
     Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Ljavax/microedition/io/Connector;
            at org.ksoap2.transport.ServiceConnectionMidp.<init>(Unknown Source)
            at org.ksoap2.transport.HttpTransport.getServiceConnection(Unknown Source)
            at org.ksoap2.transport.HttpTransport.call(Unknown Source)
            at com.sami.hello.databasetest.MainActivity.getHelloWorld(MainActivity.java:80)
            at com.sami.hello.databasetest.MainActivity$GibVonDatabase.doInBackground(MainActivity.java:49)
            at com.sami.hello.databasetest.MainActivity$GibVonDatabase.doInBackground(MainActivity.java:38)
            at android.os.AsyncTask$2.call(AsyncTask.java:292)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "javax.microedition.io.Connector" on path: DexPathList[[zip file "/data/app/com.sami.hello.databasetest-1/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
            at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
            at org.ksoap2.transport.ServiceConnectionMidp.<init>(Unknown Source)
            at org.ksoap2.transport.HttpTransport.getServiceConnection(Unknown Source)
            at org.ksoap2.transport.HttpTransport.call(Unknown Source)
            at com.sami.hello.databasetest.MainActivity.getHelloWorld(MainActivity.java:80)
            at com.sami.hello.databasetest.MainActivity$GibVonDatabase.doInBackground(MainActivity.java:49)
            at com.sami.hello.databasetest.MainActivity$GibVonDatabase.doInBackground(MainActivity.java:38)
            at android.os.AsyncTask$2.call(AsyncTask.java:292)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
    Suppressed: java.lang.ClassNotFoundException: javax.microedition.io.Connector
            at java.lang.Class.classForName(Native Method)
            at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
            at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
            ... 13 more
     Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available					

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    public static String SOAP_ACTION = "http://tempuri.org/BenutzerAuslesen";
    public static String NAMESPACE = "http://tempuri.org/";
    public static String METHOD_BENUTZER_AUSLESEN = "BenutzerAuslesen";
    public static String URL = "http://localhost:14988/Service1.asmx";

    public EditText et;
    private static String m_ausgabe;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        et = (EditText)findViewById(R.id.txt_box);
        new GibVonDatabase().execute();

    }

    public class GibVonDatabase extends AsyncTask<Void, Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            et.setText("PreExecute");

        }

        @Override
        protected Void doInBackground(Void... params) {

            getHelloWorld();

            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {

            //super.onPostExecute(aVoid);
            et.setText(m_ausgabe);
        }
    }
    public void getHelloWorld() {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_BENUTZER_AUSLESEN);
        //request.addProperty("HelloWorld", null);
        //PropertyInfo info = new PropertyInfo();
        /*info.setName("GibBack");
        info.setValue(9);
        info.setType(int.class);
        request.addProperty(info);*/
        //int zahl = 9;
        //request.addProperty("GibBack", zahl);
        request.addProperty("benutzerauslesen", null);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.setOutputSoapObject(request);
        envelope.dotNet = true;
        HttpTransport transport = new HttpTransport(URL);

        //transport.debug = true;
        try
        {
            transport.call(SOAP_ACTION, envelope);
            SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
            m_ausgabe = response.toString();
        }
        catch (Exception e)
        {
            m_ausgabe = "FEHLER";
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

}