我正在使用JTextFields的 只有一个问题: 正如你所看到的,背景是灰色阴影,我甚至试图将背景颜色设置为白色,它仍然是灰色的。下面是我当前设置提示的代码: 这是对的吗?谢谢。 final JTextField aText = new JTextField(6);
final JTextField bText = new JTextField(6);
PromptSupport.setPrompt("Digit", aText);
答案 0 :(得分:0)
这似乎是PromptSupport
和MaxOS X之间的错误(或者至少是我遇到问题的地方)
我尝试使用PromprtSupport.setBackground
,但似乎没有用,所以我最终使用了PromptSupport.setBackgroundPainter
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import org.jdesktop.swingx.painter.Painter;
import org.jdesktop.swingx.prompt.PromptSupport;
public class TestPrompt {
public static void main(String[] args) {
new TestPrompt();
}
public TestPrompt() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JTextField prompt = new JTextField(20);
PromptSupport.setPrompt("Go ahead, make my day", prompt);
PromptSupport.setFocusBehavior(PromptSupport.FocusBehavior.SHOW_PROMPT, prompt);
PromptSupport.setBackgroundPainter(new Painter() {
@Override
public void paint(Graphics2D g, Object object, int width, int height) {
g.setColor(UIManager.getColor("TextField.background"));
g.fillRect(0, 0, width, height);
}
}, prompt);
prompt.setOpaque(true);
JTextField noPrompt = new JTextField(20);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.insets = new Insets(4, 4, 4, 4);
frame.add(prompt, gbc);
frame.add(noPrompt, gbc);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
这是一个解决方案,而不是解决方案,因为仍然存在一些问题......