使用鍵盤

Question

Jbutton將之間移動我想使用FlowLayout或任何其他佈局和上下移動使用Up和Down key..Having問題JButtons之間移動JPanel中添加JButtons，因爲我不知道的JButton的行和列。

public class abc{ 
List<ControlCenterButton> buttons=getButtons();  
JPanel buttonPanel= new JPanel(); 
buttonPanel.setLayout(new FlowLayout) 
for (int i = 0; i < buttons.size(); i++) { 
      ControlCenterButton button = buttons.get(i); 
      if (button.getLayarID().equals(id)) { 
       flag = true; 
       button.addActionListener(this); 
       button.setPosition(i); 
       button.addMouseListener(new MouseAdapter() { 
        @Override 
        public void mousePressed(MouseEvent mouseEvent) { 
         buttonPanel.requestFocusInWindow(); 
        } 
       }); 
       buttonPanel.add(button); 
} 

    buttonPanel.addKeyListener(new KeyAdapter() { 
      @Override 
      public void keyPressed(KeyEvent keyEvent) { 
       final ControlCenterButton selectedControlCenterButton =  (ControlCenterButton) Session.getSession().getAttribute("controlcenter.selectedbutton"); 
       int position = selectedControlCenterButton.getPosition(); 
       int keycode = keyEvent.getKeyCode(); 
       switch (keycode) { 
        case KeyEvent.VK_RIGHT: { 
         if (position + 1 >= buttons.size()) { 
          ControlCenterButton.selectButton(buttons.get(0)); 
         } else 
          ControlCenterButton.selectButton(buttons.get(position +)); 
         break; 
        } 
      case KeyEvent.VK_UP: { 
          break; 
         } 
         case KeyEvent.VK_DOWN: { 
         }    
     case KeyEvent.VK_ENTER: { 
         selectedControlCenterButton.requestFocusInWindow(); 
         new ControlCenterButton().openApplication(selectedControlCenterButton); 
         break; 
        } 
       } 
} 
public class ControlCenterButton extends JButton implements ActionListener { 
private int position; 
public int getPosition() { 
     return position; 
} 

public void setPosition(int position) { 
    this.position = position; 
} 
} 

Answer 1

1. 添加一鍵收聽到偵聽了和下按鍵

2. 添加X的所有按鈕，y座標的按鈕。 IE瀏覽器。你可以擴展JButton或者使用某種將座標與JButton關聯的映射。

3. 當上下按下時，計算焦點應該落在哪裏，然後在找出它應該是什麼按鈕之後。請在按鈕上調用requestFocusInWindow（）。