App carashesh during reading of row from table

I'm getting error during reading a row from table. My app works like this: int main activity you select which table you want to display, than another activity will start showing every single entry in database and when you click on item in list wiew another activity will start loading the selected row columns in edit texts and here is where the error happens.

public class DVD_activity extends AppCompatActivity {
String a;
String b;
DB_Worker dw;
int x;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dvd_activity);
    NapojAdapter();
    pridajListener();
}

private void NapojAdapter() {
    dw = new DB_Worker(this);
    SimpleCursorAdapter myAdapter = new SimpleCursorAdapter(this,R.layout.dvd_list_layout,dw.VratKurzorD(),new String[] { DVD.KEY_ID,
            DVD.KEY_title,DVD.KEY_autor},new int[] {R.id.id2, R.id.nazov, R.id.autor},0);

    ListView lv = (ListView)findViewById(R.id.listView2);
    lv.setAdapter(myAdapter);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_dvd_activity, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

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

    return super.onOptionsItemSelected(item);
}

public void button4click(View view) {
    Intent intent = new Intent (this, Pridaj_DVD.class);
    String verzia = "1";
    intent.putExtra("verzia",verzia);
    startActivityForResult(intent, 1);
}

private void pridajListener() {
    AdapterView.OnItemClickListener mMessageClickedHandler = new AdapterView.OnItemClickListener() {public void onItemClick(AdapterView parent, View v, int position, long id) {

        TextView lv = (TextView)v.findViewById(R.id.id2);
        x = Integer.parseInt(lv.getText().toString());
        DVD s = dw.getDVD(x);
        a =s.title;
        b = s.autor;
        String verzia = "2";
        Intent intent = new Intent(DVD_activity.this,Pridaj_DVD.class);
        intent.putExtra("verzia", verzia);
        intent.putExtra("a",a);
        intent.putExtra("b",b);
        startActivityForResult(intent, 1);

    }};
    ListView myList= (ListView) findViewById(R.id.listView2);
    myList.setOnItemClickListener(mMessageClickedHandler);

}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 1) {
        if (resultCode == 0) {
            DVD s = new DVD();
            s.title = data.getStringExtra("a");
            s.autor = data.getStringExtra("b");
            dw.addDVD(s);
            NapojAdapter();
            }
        if (resultCode == 1) {
            dw.deleteDVD(x);
            NapojAdapter();
        }
        if (resultCode == 2) {
            a = data.getStringExtra("a");
            b = data.getStringExtra("b");
            dw.updateDVD(Integer.toString(x),a,b);
            NapojAdapter();
        }

        }
    }
}

here is the DB_WORKER class

public class DB_Worker {
public SQLiteDatabase db;
private DB_Helper dbHelper;

public DB_Worker(Context context) {
    dbHelper = new DB_Helper(context);
    db = dbHelper.getWritableDatabase();
}



public void addDVD(DVD s) {

    ContentValues values = new ContentValues();
    values.put(DVD.KEY_title, s.title);
    values.put(DVD.KEY_autor, s.autor);

    long newRowId = db.insert(DVD.TABLE,null,values);
}





public DVD getDVD(long ID) {
    DVD s = new DVD();

    VratKurzorD();
    String[] projection = {DVD.KEY_title, DVD.KEY_autor};
    String selection = DVD.KEY_ID;
    String[] selectionArgs = {""+ID};
    Cursor c = db.query(DVD.TABLE,projection,selection,selectionArgs,null,null,null);

    s.DVD_ID = ID;
    s.title = c.getString(c.getColumnIndex(DVD.KEY_title));
    s.autor = c.getString(c.getColumnIndex(DVD.KEY_autor));

    c.close();
    return s;
}




public void updateDVD(String ID, String title, String autor)
{
    ContentValues cv = new ContentValues();
    cv.put(DVD.KEY_title,title);
    cv.put(DVD.KEY_autor, autor);
    db.update(DVD.TABLE, cv, DVD.KEY_ID + "= ?", new String[]{ID});
}





public void deleteDVD(int ID) {
    db.delete(DVD.TABLE, DVD.KEY_ID + "= ?", new String[]{"" + ID});
}




public Cursor VratKurzorD() {
    Cursor c = db.rawQuery("select * from "+DVD.TABLE, null);
    c.moveToFirst();
    return c;
}

}

and here is the error

12-03 23:11:42.240    2067-2067/com.example.lowrider.pozicovna E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.lowrider.pozicovna, PID: 2067
java.lang.IllegalArgumentException: Cannot bind argument at index 1 because the index is out of range.  The statement has 0 parameters.
        at android.database.sqlite.SQLiteProgram.bind(SQLiteProgram.java:212)
        at android.database.sqlite.SQLiteProgram.bindString(SQLiteProgram.java:166)
        at android.database.sqlite.SQLiteProgram.bindAllArgsAsStrings(SQLiteProgram.java:200)
        at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47)
        at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1316)
        at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1163)
        at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1034)
        at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1202)
        at com.example.lowrider.pozicovna.DB_Worker.getDVD(DB_Worker.java:78)
        at com.example.lowrider.pozicovna.DVD_activity$1.onItemClick(DVD_activity.java:66)
        at android.widget.AdapterView.performItemClick(AdapterView.java:310)
        at android.widget.AbsListView.performItemClick(AbsListView.java:1145)
        at android.widget.AbsListView$PerformClick.run(AbsListView.java:3042)
        at android.widget.AbsListView$3.run(AbsListView.java:3879)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)