相关疑难解决方法(0)

当用户点击按钮时,我有一个正在旋转的图像.但它没有用.

我想看到图像逐渐旋转到90度直到它停止但它没有.单击按钮时,图像必须逐渐旋转90度.

我创建了一个SSCCE来演示这个问题.请使用CrossingPanelSSCE您选择的任何图像替换班级中的图像.只需将图像放入您的images文件夹并命名即可images/railCrossing.JPG.

RotateButtonSSCE

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;

public class RotateButtonSSCE extends JPanel implements ActionListener{
      private JButton rotate = new JButton("Rotate");
      private VisualizationPanelSSCE vis = new VisualizationPanelSSCE();

    public RotateButtonSSCE() {
        this.setBorder(BorderFactory.createTitledBorder("Rotate Button "));
        this.rotate.addActionListener(this);
        this.add(rotate);
    }

    public void actionPerformed(ActionEvent ev) {
        vis.rotatetheCrossing();
    }

}

CrossingPanelSSCE

import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import …