本文介绍了如何更改JPanels的背景颜色与Nimbus看和感觉?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想在应用程序中为我的所有JPanels使用不同的背景颜色。在使用Nimbus Look and Feel时,我该怎么做?
我按照以更改Nimbus外观中的组件颜色。
有时,随机。如果我在更改颜色之前设置了 PropertyChagneListener
,则只会通知一次。
这里是一些测试代码:
public class RedPanels extends JFrame {
public RedPanels {
JPanel panel = new JPanel();
add(panel);
setPreferredSize(new Dimension(100,100));
pack();
setVisible(true);
}
public static void main(String [] args){
SwingUtilities.invokeLater(new Runnable(){
@Override
public void run(){
try {
for(LookAndFeelInfo info:UIManager.getInstalledLookAndFeels()){
if(Nimbus.equals(info.getName )){
UIManager.setLookAndFeel(info.getClassName());
UIManager.getDefaults()。addPropertyChangeListener(
new PropertyChangeListener(){
@Override
public void propertyChange(PropertyChangeEvent event){
if(event.getPropertyName()。equals(Panel.background)){
System.out.println(color changed);
}
});
UIManager.put(Panel.background,new Color(255,0,0));
break;
}
}
} catch(Exception e){
// Nimbus不可用。
}
new RedPanels();
}
});
}
}
解决方案
p> UIManager.getLookAndFeelDefaults()。put(Panel.background,Color.RED);
I want to use a different background color for all my JPanels in an application. How can I do that when using Nimbus Look and Feel?
I follow Changing the Color Theme to change the color of components in Nimbus Look and Feel.
It only works sometimes, randomly. If I set a PropertyChagneListener
before I change the color, it is only notified once.
Here is some test code:
public class RedPanels extends JFrame {
public RedPanels() {
JPanel panel = new JPanel();
add(panel);
setPreferredSize(new Dimension(100, 100));
pack();
setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
UIManager.getDefaults().addPropertyChangeListener(
new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent event) {
if (event.getPropertyName().equals("Panel.background")) {
System.out.println("color changed");
}
});
UIManager.put("Panel.background", new Color(255,0,0));
break;
}
}
} catch (Exception e) {
// Nimbus is not available.
}
new RedPanels();
}
});
}
}
解决方案
UIManager.getLookAndFeelDefaults().put("Panel.background", Color.RED);
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