如何延迟动画移动 jlabel Java Swing

Question

我想把一些标签从x移动到y！但我不知道如何拖延它！

我尝试了 Thread.sleep 但它不起作用，有人说这是通过阻止 EDT 引起的，但由于我的英语不好，我无法在互联网上学习自己！请帮我举个例子！谢谢！

这是我的代码：

    public void jump(JLabel x, int y){
         x.setLocation(x.getX()+y, 310);
 }
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        jump(frog3,100);
        //i want to delay each jump about 1 second! please give me some example! 
        jump(fr0g3,-200);
        jump(fr0g2,-100);
        jump(frog3,200);
        jump(frog2,200);
        jump(frog1,100);        
        jump(fr0g3,-200);
        jump(fr0g2,-200);
        jump(fr0g1,-200);
        jump(frog3,100);
        jump(frog2,200);
        jump(frog1,200);
        jump(fr0g2,-100);
        jump(fr0g1,-200);
        jump(frog1,100);
    }                                        

感谢您的阅读！

Answer 1

我看不懂英语

所以请原谅我，如果这个答案在文字上很轻

最简单的...

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
    public static void main(String[] args) {
        new Test();
    }
    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }
                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }
    public class TestPane extends JPanel {
        private JLabel label = new JLabel("Testing");
        private int delta = 4;
        public TestPane() {
            setLayout(null);
            label.setSize(label.getPreferredSize());
            add(label);
            Timer timer = new Timer(40, new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    int x = label.getX() + delta;
                    if (x + label.getWidth() > getWidth()) {
                        x = getWidth() - label.getWidth();
                        delta *= -1;
                    } else if (x < 0) {
                        x = 0;
                        delta *= -1;
                    }
                    int y = (getHeight() - label.getHeight()) / 2;
                    label.setLocation(x, y);
                    repaint();
                }
            });
            timer.start();
        }
        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }
    }
}

有关更多详细信息，请参阅如何使用摆动计时器。

我不喜欢null布局，我不建议null布局，但鉴于这是学校作业，唯一可行的解决方案是使用自定义绘画，我很欣赏为什么会选择这个方向，尽管自定义绘画解决方案通常会更简单。