参考此bug:
4848910: UIManager只更新一次颜色
在JFrame上有两个按钮。从第一个按钮开始,我用
改变LAF颜色UIManager.put( "Button.background", new ColorUIResource(Color.red) );
SwingUtilities.updateComponentTreeUI( this.getContentPane() );
在第二个按钮上,我用
改变LAF的颜色UIManager.put( "Button.background", new ColorUIResource(Color.green) );
SwingUtilities.updateComponentTreeUI( this.getContentPane() );
这里我使用ColorUIResource(如所描述的错误的解决方案),但我的问题仍然是相同的,在提到的错误中描述。例如,UIManager在第一次点击任何按钮时改变颜色,但在随后的点击中不改变颜色。
我错过了什么吗?
-
不可能直接改变
-
可以通过重置当前的光轮配色方案(
UIManager.getLookAndFeel().uninitialize();
) -
另一个(类似的)问题是在我的问题关于光轮& &;字体
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.LookAndFeel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.UnsupportedLookAndFeelException;
public class NimbusTestButtonsBackground extends JFrame {
private static final long serialVersionUID = 1L;
private javax.swing.JButton button;
public NimbusTestButtonsBackground() {
button = new javax.swing.JButton();
button.setText("Text");
add(button);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
this.pack();
Timer t = new Timer(1000, new ActionListener() {
private Random r = new Random();
@Override
public void actionPerformed(ActionEvent e) {
Color c = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256));
try {
LookAndFeel lnf = UIManager.getLookAndFeel().getClass().newInstance();
UIDefaults uiDefaults = lnf.getDefaults();
uiDefaults.put("nimbusBase", c);
UIManager.getLookAndFeel().uninitialize();
UIManager.setLookAndFeel(lnf);
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
UIDefaults defaults = UIManager.getDefaults();
defaults.put("Button.background", c);
SwingUtilities.updateComponentTreeUI(button);
}
});
t.start();
}
public static void main(String args[]) {
try {
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e) {
return;
}
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new NimbusTestButtonsBackground().setVisible(true);
}
});
}
}