单击 j/ToggleButton 然后设置图标/图像

Question

我正在制作一个类似于扫雷的 4x4 棋盘。每个按钮都有一个炸弹或其他图像。

这是我的代码：

private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
    this.jToggleButton1.setIcon(new javax.swing.ImageIcon("bombaa.png"));          
}         

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    this.jToggleButton1.setIcon(new javax.swing.ImageIcon("bombaa.png"));
}                    

也试过这种方式...

private void setIcon1(){
    setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("bombaa.png")));
}

并在 jButton1ActionPerformed 和 jButton1MouseClicked 中调用 setIcon() 但这会将我的图像设置为程序的主图标。

基本上我需要的是：单击一个按钮并只设置一次图像/图标。

Answer 1

首先创建您自己的按钮，您可以控制所选状态...

public class StickyModel extends JToggleButton.ToggleButtonModel {

    public void reset() {
        super.setSelected(false);
    }

    @Override
    public void setSelected(boolean b) {
        if (!isSelected()) {
            super.setSelected(b);
        }
    }

}

这将防止按钮在被设置为选中后变为“未选中”（它还包括一个 reset 方法，这将使您“未选中”它）

使用“空白”或空“默认”图标创建您的按钮，并将selectedIcon 属性设置为您希望在选择按钮时显示的内容...

JToggleButton btn = new JToggleButton();
btn.setModel(new StickyModel());
btn.setIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Blank.png"))));
btn.setSelectedIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Bomb.png"))));

所以，当按钮被点击时，它将使用selectedIcon

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToggleButton;
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 {

        public TestPane() {
            setLayout(new GridBagLayout());
            try {
                add(createButton());
                add(createButton());
                add(createButton());
            } catch (IOException exp) {
                exp.printStackTrace();
            }
        }

        protected JToggleButton createButton() throws IOException {

            JToggleButton btn = new JToggleButton();
            btn.setModel(new StickyModel());
            btn.setIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Blank.png"))));
            btn.setSelectedIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Bomb.png"))));
            return btn;

        }

    }

    public class StickyModel extends JToggleButton.ToggleButtonModel {

        public void reset() {
            super.setSelected(false);
        }

        @Override
        public void setSelected(boolean b) {
            if (!isSelected()) {
                super.setSelected(b);
            }
        }

    }

}