问如何从QuietlyCoding的NumberPicker中检索值？

EN

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"/>
    <com.mypackage.NumberPicker
         //set your layout
         />
    <LinearLayout
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal">
         <Button
              //cancel button
              />
         <Button
              //Ok button
              />
    </LinearLayout>
</LinearLayout>

public class DialogPicker extends Picker {

    public DialogPicker(Context context) {
        super(context);
        setContentView(R.layout.picker_dialog);
        NumberPicker numberPicker = (NumberPicker)findViewById(R.id.my_number_picker);
        //do whatever
        Button okbutton = (Button) findViewById(R.id.my_ok_button);
        //set your click listener
    }
}

PickerDialog pd = new PickerDialog(this);
pd.show();

public DialogPicker(Context context) {
    super(context);
    setContentView(R.layout.picker_dialog);
    NumberPicker numberPicker = (NumberPicker)findViewById(R.id.my_number_picker);
    //do whatever
    Button okbutton = (Button) findViewById(R.id.my_ok_button);
    //set your click listener
}