爲什麼整個Horizo​​ntalFieldManager可點擊？

Question

我在MainScreen的setStatus方法中添加了按鈕。現在整個HFM都是可點擊的我不知道爲什麼？請指導。下面的代碼：

setStatus(setFooter()); 
    ... 
    public Field setFooter() { 

      HorizontalFieldManager hfm1 = new HorizontalFieldManager(USE_ALL_WIDTH|Manager.NO_HORIZONTAL_SCROLL|Manager.NO_HORIZONTAL_SCROLLBAR); 

      Bitmap bm; 
      bm = Bitmap.getBitmapResource("statusImage.PNG"); 
      Background bg = BackgroundFactory.createBitmapBackground(bm, Background.POSITION_X_LEFT, Background.POSITION_Y_BOTTOM, Background.REPEAT_SCALE_TO_FIT); 
      hfm1.setBackground(bg); 
      hfm1.add(new DummyField(bm.getHeight())); 
      hfm1.add(backButton); 
      hfm1.add(nextButton); 

      return hfm1; 
      } 

空場：

class DummyField extends Field { 
    private int logoHeight; 

    public DummyField(int height) { 
     logoHeight = height; 
    } 

    protected void layout(int width, int height) { 
     setExtent(1, logoHeight); 
    } 

    protected void paint(Graphics graphics) { 
    } 
} 

我也重寫這些方法（lionscribe implementation），以避免HFM被點擊，但它不工作：

protected boolean touchEvent(TouchEvent message) 
    { 
    int event = message.getEvent(); 
    if (event == TouchEvent.CLICK || event == TouchEvent.UNCLICK) 
    { 
     // Ignore clcik events that happen outside any fields 
     if (getFieldAtLocation(message.getX(1), message.getY(1)) == -1) 
     return true; // kill the event 
    } 
    return super.touchEvent(message); 
    } 

    // The regular getFieldAtLocation returns wrong values in open spaces in complex managers, so we override it 
    public int getFieldAtLocation(int x, int y) 
    { 
    XYRect rect = new XYRect(); 
    int index = getFieldCount() -1; 
    while (index >= 0) 
    { 
     getField(index).getExtent(rect); 
     if (rect.contains(x, y)) 
     break; 
     --index; 
    } 
    return index; 
    } 

Answer 1

我可以在Peter's post的幫助下修復它0我不得不重寫我的CustomButtonField內touchEvent方法，並呼籲navigationClick內，如果現場邊界條件返回false：

if(!(x < 0 || y < 0 || x > getExtent().width || y > getExtent().height)) { 
    navigationClick(x,y); 
}