好吧,我正在制作一个点击游戏,等等等等……重点是,我无法更新 JLabel……我很困惑……看到我以前做过这个……这是我的代码。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class ClickingGame extends JPanel implements ActionListener {
private static final long serialVersionUID = 1L;
static JFrame frame;
static JButton startbutton, clickingbutton, timerstop;
static JLabel timelabel, scorelabel;
static int time = 0;
static JTextField entertime;
static Timer clock;
static Timer countdown;
public ClickingGame() {
setLayout(new GridLayout(3, 2, 5, 5));
startbutton = new JButton("Start CountDown");
timelabel = new JLabel("Time Left = NULL", SwingConstants.CENTER);
entertime = new JTextField();
clickingbutton = new JButton("Click Here!");
scorelabel = new JLabel("Score = NULL", SwingConstants.CENTER);
timerstop = new JButton("Stop Timer!");
clock = new Timer(1000, this);
countdown = new Timer(1000, this);
add(entertime);
add(startbutton);
add(timelabel);
add(scorelabel);
add(clickingbutton);
add(timerstop);
clickingbutton.setEnabled(false);
timerstop.setEnabled(false);
startbutton.addActionListener(this);
}
public static void openGUI() {
frame = new JFrame("Clicking Game");
ClickingGame contentpane = new ClickingGame();
frame.setContentPane(contentpane);
frame.pack();
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == startbutton) {
startbutton.setEnabled(false);
clickingbutton.setEnabled(true);
}
if (e.getSource() == clickingbutton) {
int score = 0;
score++;
scorelabel.setText("Score = "+score);
scorelabel.repaint();
}
}
}
如您所见,我使用了'setText'方法,但它没有工作...... :(有人可以帮忙吗?