Java 按下按钮时如何更改按钮文本颜色和背景颜色
我试图在按下鼠标按钮时,使用Java中的Swing UI更改按钮的背景色和文本(前景)色。我的主要课程非常简单明了:Java 按下按钮时如何更改按钮文本颜色和背景颜色,java,swing,synth,Java,Swing,Synth,我试图在按下鼠标按钮时,使用Java中的Swing UI更改按钮的背景色和文本(前景)色。我的主要课程非常简单明了: public class Main { public static void main(String[] args) { SynthLookAndFeel laf = new SynthLookAndFeel(); try { laf.load(Main.class.getResourceAsStream(&qu
public class Main {
public static void main(String[] args) {
SynthLookAndFeel laf = new SynthLookAndFeel();
try {
laf.load(Main.class.getResourceAsStream("/styles.xml"), Main.class);
} catch (ParseException e) {
e.printStackTrace();
}
try {
UIManager.setLookAndFeel(laf);
} catch (UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
JFrame frame = new JFrame("Not hello world");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 300);
frame.setLocation(50, 50);
frame.setLayout(new FlowLayout());
frame.add(new JButton("Button 1"));
frame.add(new JButton("Button 2"));
frame.add(new JButton("Button 3"));
frame.setVisible(true);
}
}
加载的XML Synth样式文件如下所示:
<synth>
<style id="basicStyle">
<font name="Verdana" size="16"/>
<state>
<color value="#eeeeee" type="BACKGROUND"/>
<color value="#000000" type="FOREGROUND"/>
</state>
</style>
<bind style="basicStyle" type="region" key=".*"/>
<style id ="button_style">
<state value="PRESSED">
<color value="#666666" type="FOREGROUND" />
<color value="#aaaaaa" type="BACKGROUND" />
</state>
</style>
<bind style="button_style" type="region" key="button"/>
但我得到的只是屏幕上有黑色文本和灰色背景的按钮。按下按钮时,不会发生任何情况:
有什么方法可以实现这样的行为吗?您的
Synth
文件中存在一些问题:
opaque=“true”
,默认情况下,JButton
将是透明的(即,您的背景将不可见)
TEXT\u foreground
而不是foreground
键
<synth>
<style id="basicStyle">
<font name="Verdana" size="16" />
<state>
<color value="#eeeeee" type="BACKGROUND" />
<color value="#000000" type="FOREGROUND" />
</state>
</style>
<bind style="basicStyle" type="region" key=".*" />
<style id="button_style">
<opaque value="true" />
<insets top="4" left="4" right="4" bottom="4" />
<state>
<color value="blue" type="TEXT_FOREGROUND" />
<color value="#ffffff" type="BACKGROUND" />
</state>
<state value="PRESSED">
<color value="white" type="TEXT_FOREGROUND" />
<color value="#aaaaaa" type="BACKGROUND" />
</state>
</style>
<bind style="button_style" type="region" key="button" />
</synth>