问题描述
当我单击它时,我正在尝试更改JButton的颜色,但是会出现蓝色,而不是我写的颜色。
目标:目标是当您单击按钮时颜色会改变
我进行了几次搜索,但是每次出现蓝色字体。
我尝试覆盖paintComponent,并使用this.getModel等几种替代方法,但没有任何效果。
我的按钮类:
package com.tralamy.lancherX.display;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class TButton extends JButton {
private Color hoverColor = Display.LIGHT_GRAY;
private Color pressColor = Display.LIGHT_DARK;
private Color firstColor;
private Color basic;
private MouseAdapter hoverAdapter = new MouseAdapter() {
@Override
public void mouseEntered(MouseEvent e) {
basic = firstColor;
TButton.this.setBackground(hoverColor);
}
@Override
public void mouseExited(MouseEvent e) {
TButton.this.setBackground(basic);
}
};
private MouseAdapter pressAdapter = new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
TButton.this.setBackground(pressColor);
super.mousePressed(e);
}
@Override
public void mouseReleased(MouseEvent e) {
TButton.this.setBackground(basic);
super.mouseReleased(e);
}
};
public TButton (String text){
super(text);
init();
}
public TButton (Icon icon){
super(icon);
init();
}
public TButton (){
super();
init();
}
private void init()
{
firstColor = this.getBackground();
setBorder(null);
setBorderPainted(false);
setContentAreaFilled(false);
setOpaque(false);
setFocusPainted(false);
setPressedIcon(new ImageIcon());
}
@Override
public void setBackground(Color bg) {
super.setBackground(bg);
firstColor = bg;
}
public void setHover()
{
this.addMouseListener(hoverAdapter);
}
public void removeHover()
{
this.removeMouseListener(hoverAdapter);
}
public void setPress()
{
this.addMouseListener(pressAdapter);
}
public void removePress()
{
this.removeMouseListener(pressAdapter);
}
public void setHoverColor(Color color)
{
hoverColor = color;
}
public Color getHoverColor()
{
return hoverColor;
}
public Color getPressColor() {
return pressColor;
}
public void setPressColor(Color pressColor) {
this.pressColor = pressColor;
}
}
主菜单面板:
private JPanel menuPanel() {
mp = new JPanel();
setPercentWidth(mp,25);
mp.setBackground(LIGHT_GRAY);
mp.setLayout(new BorderLayout());
JPanel userSection = new JPanel();
userSection.setLayout(new GridBagLayout());
setPercentHeight(userSection,5);
userSection.setPreferredSize(new Dimension(userSection.getWidth(),0));
userSection.setBackground(LIGHT_DARK);
userIconButton.setHorizontalAlignment(SwingConstants.CENTER);
userName.setHorizontalAlignment(SwingConstants.CENTER);
userIconButton.setBorder(new EmptyBorder(0,10));
userSection.add(userIconButton);
userSection.add(userName);
menuButtons.add(new TButton("Library"));
menuButtons.add(new TButton("Store"));
menuButtons.add(new TButton("Friends"));
menuButtons.add(new TButton("News"));
JPanel menuSection = new JPanel();
menuSection.setLayout(new BoxLayout(menuSection,BoxLayout.Y_AXIS));
menuSection.setOpaque(false);
for (TButton button : menuButtons) {
button.setAlignmentX(TButton.CENTER_ALIGNMENT);
button.setFont(App.setSemiBoldNunito(48));
button.setForeground(SUPER_SUPER_LIGHT_GRAY);
button.setBackground(SUPER_LIGHT_GRAY);
button.setBorder(null);
button.setBorderPainted(true);
button.setContentAreaFilled(true);
button.setOpaque(true);
button.setHoverColor(DARK_GRAY);
button.setHover();
button.setPressColor(LIGHT_DARK);
button.setPress();
TButton marginLabel = new TButton();
marginLabel.setSize(MAIN_MENU_MARGIN,MAIN_MENU_MARGIN);
marginLabel.setMaximumSize(new Dimension(MAIN_MENU_MARGIN,MAIN_MENU_MARGIN));
marginLabel.setMinimumSize(new Dimension(MAIN_MENU_MARGIN,MAIN_MENU_MARGIN));
setPercentWidth(button,20);
menuSection.add(marginLabel);
menuSection.add(button);
}
mp.add(menuSection);
mp.add(userSection,BorderLayout.SOUTH);
return mp;
}
然后是一些图像: My bug
在此先谢谢你
解决方法
如果您想在用户单击按钮时以持久的颜色更改按钮的背景,则可以在其上使用setContentAreaFilled(false)
。然后需要将opaque属性重置为true
,因为根据the docs of setContentAreaFilled
:“ 此函数可能导致组件的opaque属性发生更改。”,例如:>
import java.awt.Color;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class MainPersist {
private static void createAndShowGUI() {
final JButton button = new JButton("Click to change color");
button.addActionListener(e -> {
button.setContentAreaFilled(false);
button.setOpaque(true); //Reset the opacity.
button.setBackground(Color.CYAN.darker()); //Set your desired color as the background.
});
final JFrame frame = new JFrame("Button bg on click");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(button);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(final String[] args) {
SwingUtilities.invokeLater(MainPersist::createAndShowGUI);
}
}
否则,如果您希望按钮仅在单击时改变其颜色,然后在释放时恢复正常,则请看一下this question,它就是这样。它尚无接受的答案(此答案本身发布时是最近的),但是至少有一个/我的答案(建议修改按钮的ButtonUI
),应该有一个答案我猜还会有更多答案。