Java Swing动画

我要做一个关于电梯管理系统的Java项目

我的问题是在2杰帕内尔的。第一个是JLabel和Button，每层一个-我使用布局，因为我希望它能够响应。在程序开始之前，我有一个对话框，可以设置第一层和最后一层的标高。以下是代码：

public void setFloors() {
    floorNavigation = new JPanel();
    floorNavigation.setLayout(new BoxLayout(floorNavigation, BoxLayout.Y_AXIS));
    floorNavigation.add(Box.createVerticalGlue());
    for(JPanel p : floorPanels){
        floorNavigation.add(p);
    }
    floorNavigation.add(Box.createVerticalGlue());
    frame.add(floorNavigation, BorderLayout.LINE_START);
}

public void createFloorPanel() {
    JPanel floorPanel;
    for(JLabel l : floorLabels){
        floorPanel = new JPanel(new FlowLayout());
        floorPanel.add(l);
        floorPanel.add(floorButtons.get(floorLabels.indexOf(l)));
        floorPanels.add(floorPanel);
    }
}

---

我想制作一个电梯移动动画到另一个JPanel中每个JLabel的Y。有什么办法吗？像盖蒂这样的事情是行不通的

如果我理解正确，包含按钮的面板和包含动画的面板将并排放置，从而具有相同的高度。在这种情况下，只需知道面板的当前高度和按钮数量，即可计算Y坐标位置。只需将高度除以按钮数，再乘以你想要到达的楼层数。注意，这将按相反的顺序，自上而下计算楼层数

计算完这些位置后，您可以使用简单的线性动画将电梯移动到按钮的相应位置，我猜是导入的图标或图像。下面是一个简单的动画模板，小圆圈代表您的电梯图像：

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class SimpleAnimation {

  static int x;
  static int y = 150;
  static int floor_distance = 130;
  static int animation_speed = 10; //less is faster
  static MyDrawPanel panel = new MyDrawPanel();

  public static void main(String[] args) {

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final JButton buttonUp = new JButton("Floor Up");
    final JButton buttonDown = new JButton("Floor Down");

    buttonUp.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
      (new AnimatorUp()).execute();
      }
    });

    buttonDown.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
      (new AnimatorDown()).execute();
      }
    });

    frame.getContentPane().add(BorderLayout.NORTH, buttonUp);
    frame.getContentPane().add(BorderLayout.SOUTH, buttonDown);
    frame.getContentPane().add(panel);
    frame.setSize(300,300);
    frame.setVisible(true);
  }

  static class AnimatorUp extends SwingWorker<String, Object> {
    @Override
    public String doInBackground() {
      try {
        x = (int)(panel.getWidth() / 2);
        for(int i = 0; i < floor_distance; i++) {
          y--;
          panel.repaint();
          try{ Thread.sleep(animation_speed); } catch(Exception ex) { ex.printStackTrace(); }
        }
      } catch (Exception ignore) {
      }
      return "";
    }
  }

  static class AnimatorDown extends SwingWorker<String, Object> {
    @Override
    public String doInBackground() {
      try {
        x = (int)(panel.getWidth() / 2);
        for(int i = 0; i < floor_distance; i++) {
          y++;
          panel.repaint();
          try{ Thread.sleep(animation_speed); } catch(Exception ex) { ex.printStackTrace(); }
        }
      } catch (Exception ignore) {
      }
      return "";
    }
  }

  static class MyDrawPanel extends JPanel {
    public void paintComponent(Graphics g) {
      g.fillRect(0, 0, this.getWidth(), this.getHeight());
      g.setColor(new Color(215,215,215));
      x = (int)(panel.getWidth() / 2);
      g.fillOval(x, y, 50, 50);
    }
  }

}

您可以修改此代码，使按钮触发将电梯移动到特定楼层的动画。通过计算电梯当前Y位置与所需楼层Y位置之间的差值，可以设置要执行的动画的方向和范围