如何更改 JProgressBar 的颜色
how to change the color of JProgressBar
1 我正在尝试更改进度条的颜色,但它仍然是橙色这里是代码:
test(){
UIManager.put("ProgressBar.background", Color.BLACK);
UIManager.put("ProgressBar.foreground", Color.RED);
UIManager.put("ProgressBar.selectionBackground", Color.YELLOW);
UIManager.put("ProgressBar.selectionForeground", Color.BLUE);
bar = new JProgressBar();
bar.setBounds(20, 30,400 , 200);
bar.setString("Welcome...");
bar.setStringPainted(true);
this.add(bar);
我试过 .setbackground 也没用
您的代码问题可能与您调用的位置有关 UIManager
。
如果您在对象初始化之前调用它,它会正常工作:
UIManager.put("ProgressBar.background", Color.GREEN);
UIManager.put("ProgressBar.foreground", Color.BLUE);
UIManager.put("ProgressBar.selectionBackground", Color.RED);
UIManager.put("ProgressBar.selectionForeground", Color.GREEN);
JProgressBar progress = new JProgressBar();
结果:
如果您在初始化后调用 UIManager
,结果将不同:
JProgressBar progress = new JProgressBar();
UIManager.put("ProgressBar.background", Color.GREEN);
UIManager.put("ProgressBar.foreground", Color.BLUE);
UIManager.put("ProgressBar.selectionBackground", Color.RED);
UIManager.put("ProgressBar.selectionForeground", Color.GREEN);
结果:
]2
1 我正在尝试更改进度条的颜色,但它仍然是橙色这里是代码:
test(){
UIManager.put("ProgressBar.background", Color.BLACK);
UIManager.put("ProgressBar.foreground", Color.RED);
UIManager.put("ProgressBar.selectionBackground", Color.YELLOW);
UIManager.put("ProgressBar.selectionForeground", Color.BLUE);
bar = new JProgressBar();
bar.setBounds(20, 30,400 , 200);
bar.setString("Welcome...");
bar.setStringPainted(true);
this.add(bar);
我试过 .setbackground 也没用
您的代码问题可能与您调用的位置有关 UIManager
。
如果您在对象初始化之前调用它,它会正常工作:
UIManager.put("ProgressBar.background", Color.GREEN);
UIManager.put("ProgressBar.foreground", Color.BLUE);
UIManager.put("ProgressBar.selectionBackground", Color.RED);
UIManager.put("ProgressBar.selectionForeground", Color.GREEN);
JProgressBar progress = new JProgressBar();
结果:
如果您在初始化后调用 UIManager
,结果将不同:
JProgressBar progress = new JProgressBar();
UIManager.put("ProgressBar.background", Color.GREEN);
UIManager.put("ProgressBar.foreground", Color.BLUE);
UIManager.put("ProgressBar.selectionBackground", Color.RED);
UIManager.put("ProgressBar.selectionForeground", Color.GREEN);
结果: