下面的示例展示了如何在基于swing的应用程序中的对话框中创建和使用颜色选择器。
使用以下API -
JColorChooser()- 创建标准颜色选择器，允许用户从托盘中选择颜色。JColorChooser.showDialog();- 将“颜色选择器”显示为对话框。
示例
package com.yiibai.swingdemo;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class SwingTester {
public static void main(String[] args) {
createWindow();
}
private static void createWindow() {
JFrame frame = new JFrame("Swing对话框中创建颜色选择器(yiibai.com)");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
createUI(frame);
frame.setSize(560, 400);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void createUI(final JFrame frame) {
JPanel panel = new JPanel();
LayoutManager layout = new FlowLayout();
panel.setLayout(layout);
final JLabel colorLabel = new JLabel("颜色选择器示例");
JButton button = new JButton("选择颜色：");
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
Color color = JColorChooser.showDialog(frame, "选择标签颜色", Color.white);
colorLabel.setForeground(color);
}
});
panel.add(colorLabel);
panel.add(button);
frame.getContentPane().add(panel, BorderLayout.CENTER);
}
}
执行上面示例代码，得到以下结果：
