Java 将背景颜色设置为 JButton

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时间:2020-08-11 22:57:53  来源:igfitidea点击:

Setting background color to JButton

javaswingcolorsjbutton

提问by ro-E

I have a question about setting the background color to JButton.

我有一个关于将背景颜色设置为 的问题JButton

It seems that the this method only changes the color of the border. Here is the difference (left is jButton):

看来这个方法只改变了边框的颜色。这是区别(左边是jButton):

enter image description here

在此处输入图片说明

Is there a way to make the background the same?

有没有办法使背景相同?

I'm using setLookAndFeelon Windows 8.

setLookAndFeel在 Windows 8 上使用。

采纳答案by Andrew Thompson

This will work with either the Metal (default) or Windows PLAFs.

这将适用于 Metal(默认)或 Windows PLAF。

import java.awt.Color;
import javax.swing.*;

class ColoredButton {

    public static void main(String[] args) {
        Runnable r = () -> {
            try {
                UIManager.setLookAndFeel(
                        UIManager.getSystemLookAndFeelClassName());
            } catch (Exception e) {
                e.printStackTrace();
            }

            JButton b1 = new JButton("Button 1");
            b1.setBackground(Color.RED);
            // these next two lines do the magic..
            b1.setContentAreaFilled(false);
            b1.setOpaque(true);

            JOptionPane.showMessageDialog(null, b1);
        };
        SwingUtilities.invokeLater(r);
    }
}

回答by Xabster

Use .setOpaque(true) on the button.

在按钮上使用 .setOpaque(true) 。