我在写俄罗斯方块游戏。当应用程序启动时,用按钮"Play“打开Jlabel。如何在现有的Jframe中切换到不同的标签(板)?
就这样,它直接打开游戏。但是首先,我想使用ButtonPage类来显示一些欢迎屏幕,而不是一个按钮,然后调用游戏。
public class Tetris extends JFrame {
public Tetris(){
// JFrame Properties
setSize(198, 409);
setResizable(false);
setTitle("Tetris");
setDefaultCloseOperation(EXIT_ON_CLOSE);
// ButtonPage buttons = new ButtonPage();
// add(buttons);
// buttons.setOpaque(true);
Board board = new Board(this);
add(board);
board.start();
} // end of constructor
public static void main(String[] args){
Tetris game = new Tetris();
game.setLocationRelativeTo(null);
game.setVisible(true);
game.setLayout(null);
} // end of main
} // end of class
这里是ButtonPage类.
public class ButtonPage extends JPanel implements ActionListener{
JButton buttonPLAY = new JButton();
JLabel backgroundImage = new JLabel();
public ButtonPage(){
setLayout(null);
ImageIcon buttonIcon = new ImageIcon(getClass().getResource("PlayButton.png"));
ImageIcon buttonIconHover = new ImageIcon(getClass().getResource("PlayButtonHover.png"));
ImageIcon buttonIconClicked = new ImageIcon(getClass().getResource("PlayButtonClicked.png"));
int buttonHeight = buttonIcon.getIconHeight();
int buttonWidth = buttonIcon.getIconWidth();
buttonPLAY.addActionListener(this);
buttonPLAY.setActionCommand("Play");
buttonPLAY.setIcon(buttonIcon);
buttonPLAY.setRolloverIcon(buttonIconHover);
buttonPLAY.setPressedIcon(buttonIconClicked);
buttonPLAY.setBorderPainted(false);
add(buttonPLAY);
Dimension size2 = getSize();
Dimension size = buttonPLAY.getPreferredSize();
buttonPLAY.setBounds((192 - buttonWidth)/2, 100 ,buttonWidth, buttonHeight);
}// end of constructor
@Override
public void actionPerformed(ActionEvent e) {
if ("Play".equals(e.getActionCommand())) {
Tetris game = new Tetris();
// opens the window in the middle of the screen
game.setLocationRelativeTo(null);
// set the tetris window visible, unless its true - its invisible DUH!
game.setVisible(true);
game.setLayout(null);
}
} // end of actionPerformed
}// end of class
使用actionPerformed方法,我可以打开游戏在一个新的框架,但我不知道如何切换面板。
谢谢您的提示!
发布于 2012-10-26 21:56:11
俄罗斯方块来自main,下面一行来自actionPerformed():
Tetris game = new Tetris();
实例化第二个俄罗斯方块,你到底想要什么?
若要将多个面板添加到一个框架中,一次只能看到一个面板,请使用CardLayout。
发布于 2012-10-26 21:56:38
https://stackoverflow.com/questions/13094932
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