我想更改JProgressbar的颜色，但它不起作用。我可以使用setBackground更改JProgressBar周围的颜色，但不能更改Bar本身的颜色。然而，在这种情况下，setForeground对我不起作用。 我不使用UiManager或任何其他类似的东西。我只是使用swing和awt。 调试器说Foregroundcolor已经改变，但它在视觉上没有改变。 Mac进度条是否有可能无法直观地改变其前景？
//create Progressbar
progBarHeroLife = new JProgressBar(0, Hero.Life.max);
progBarHeroLife.setBounds(25, 676, 200, 50);
progBarHeroLife.setStringPainted(true);
progBarHeroLife.setOpaque(true);
progBarHeroLife.setForeground(Color.orange);
progBarHeroLife.setString(String.valueOf(Hero.Life.actual) + "/" + String.valueOf(Hero.Life.max));
progBarHeroLife.setValue(Hero.Life.actual);
controlePanel.add(progBarHeroLife);
myFrame.add(gamePanel);
Thats how it look like actually
这是窗口的完整源代码
package com.company.Game;
import com.company.Characters.Hero;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Window implements ActionListener
{
public static int scale = 20;
public static JFrame meinFrame;
public static int heightMeinFrame = 800;
public static int heightGamePanel = 500;
public static int heightControlePanel = 300;
public static int heightLabelBackground = heightGamePanel;
public static int widthMeinFrame = 1000;
public static int widthGamePanel = 1000;
public static int widthControlePanel = 1000;
public static int widthLabelBackground = widthGamePanel;
public static int offsetPlayerY = -(5*scale);
public static JPanel gamePanel;
public static JPanel controlePanel;
public static JLabel labelBackground;
static ImageIcon backgroundIcon = new ImageIcon("/Users/MJulich/IdeaProjects/Spiel mit Gui/src/Imports/Background.png");
static JProgressBar progBarHeroLife;
static JProgressBar progBarHeroMana;
static JButton myJBtn1;
static JButton myJBtn2;
static JButton myJBtn3;
static JButton myJBtn4;
static JButton myJBtn5;
static JButton myJBtn6;
static JButton myJBtn7;
static JButton myJBtn8;
public Window()
{
//create Frame
meinFrame = new JFrame("Mein JFrame Beispiel");
meinFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/* Wir setzen die Breite unseres Fensters auf 1000 Pixel
und die Höhe unseres Fensters auf 800 Pixel */
meinFrame.setSize(widthMeinFrame, heightMeinFrame);
meinFrame.setResizable(false);
//create gamePanel
gamePanel = new JPanel();
gamePanel.setLayout(null);
gamePanel.setBounds(0, 0, widthGamePanel, heightGamePanel);
//create Background
backgroundIcon.setImage(backgroundIcon.getImage().getScaledInstance(widthLabelBackground, heightLabelBackground, Image.SCALE_DEFAULT));
labelBackground = new JLabel(backgroundIcon);
labelBackground.setOpaque(true);
labelBackground.setBounds(0,0,widthLabelBackground,heightLabelBackground);
PaintObjects.paintNew();
gamePanel.add(labelBackground);
//create controlePanel
controlePanel = new JPanel();
controlePanel.setLayout(null);
controlePanel.setBounds(0, heightGamePanel+1, widthControlePanel, heightControlePanel);
controlePanel.setBackground(new Color(200,200,255));
//create Buttons
myJBtn1 = new JButton("1");
myJBtn1.setBounds(25, 526, 200, 50);
myJBtn2 = new JButton("2");
myJBtn2.setBounds(275, 526, 200, 50);
myJBtn3 = new JButton("3");
myJBtn3.setBounds(525, 526, 200, 50);
myJBtn4 = new JButton("4");
myJBtn4.setBounds(775, 526, 200, 50);
myJBtn5 = new JButton("5");
myJBtn5.setBounds(25, 601, 200, 50);
myJBtn6 = new JButton("6");
myJBtn6.setBounds(275, 601, 200, 50);
myJBtn7 = new JButton("7");
myJBtn7.setBounds(525, 601, 200, 50);
myJBtn8 = new JButton("8");
myJBtn8.setBounds(775, 601, 200, 50);
myJBtn1.addActionListener(this);
myJBtn2.addActionListener(this);
myJBtn3.addActionListener(this);
myJBtn4.addActionListener(this);
myJBtn5.addActionListener(this);
myJBtn6.addActionListener(this);
myJBtn7.addActionListener(this);
myJBtn8.addActionListener(this);
//create Progressbar
progBarHeroLife = new JProgressBar(0, Hero.Life.max);
progBarHeroLife.setBounds(25, 676, 200, 50);
progBarHeroLife.setStringPainted(true);
progBarHeroLife.setOpaque(true);
/**einfärben funktioniert noch nicht*/
progBarHeroLife.setForeground(Color.yellow);
progBarHeroLife.setString(String.valueOf(Hero.Life.actual) + "/" + String.valueOf(Hero.Life.max));
progBarHeroLife.setValue(Hero.Life.actual);
//add Buttons and Progressbar to controlePanel
controlePanel.add(myJBtn1);
controlePanel.add(myJBtn2);
controlePanel.add(myJBtn3);
controlePanel.add(myJBtn4);
controlePanel.add(myJBtn5);
controlePanel.add(myJBtn6);
controlePanel.add(myJBtn7);
controlePanel.add(myJBtn8);
controlePanel.add(progBarHeroLife);
//add Panels to Frame
meinFrame.add(gamePanel);
meinFrame.add(controlePanel);
//show Frame
meinFrame.setVisible(true);
}
public void actionPerformed (ActionEvent ae)
{
// Die Quelle wird mit getSource() abgefragt und mit den
// Buttons abgeglichen. Wenn die Quelle des ActionEvents einer
// der Buttons ist, wird der Text des JLabels entsprechend geändert
if(ae.getSource() == myJBtn1){
ButtonListener.buttonPressed(1);
}
else if(ae.getSource() == myJBtn2){
ButtonListener.buttonPressed(2);
}
else if(ae.getSource() == myJBtn3){
ButtonListener.buttonPressed(3);
}
else if(ae.getSource() == myJBtn4){
ButtonListener.buttonPressed(4);
}
else if(ae.getSource() == myJBtn5){
ButtonListener.buttonPressed(5);
}
else if(ae.getSource() == myJBtn6){
ButtonListener.buttonPressed(6);
}
else if(ae.getSource() == myJBtn7){
ButtonListener.buttonPressed(7);
}
else if(ae.getSource() == myJBtn8){
ButtonListener.buttonPressed(8);
}
}
}
（我知道我不需要公开所有内容。）
答案 0 :(得分：0)
您应该将setStringPainted（）设置为true。这应该有用。
progBarHeroLife.setStringPainted(true);
progBarHeroLife.setForeground(Color.red);
progBarHeroLife.setString("10%");
或者您可以按如下方式使用UIManager（我知道您在没有UIManager的情况下提到过）。但这是一种简单的方法。
UIManager.put("ProgressBar.background", Color.BLACK); //colour of the background
UIManager.put("ProgressBar.foreground", Color.RED); //colour of progress bar
UIManager.put("ProgressBar.selectionBackground",Color.YELLOW); //colour of percentage counter on black background
UIManager.put("ProgressBar.selectionForeground",Color.BLUE); //colour of precentage counter on red background