我有一个文本字段，我设置了 seteditable(false) 和 setEnabled(false) 但问题是，在这种情况下，它的背景颜色会发生变化，并且我不能把它改回来。
看，app的背景色和2个禁用文本框的背景色是不一样的 问题:如何更改已禁用且不可编辑的文本字段的背景颜色。
t5 是右边的文本字段(在照片中)。我试过的是:放置 t5.setBackground(Color....), t5.setBackground(UIManager.getColor("t5.background")), t5.setBackground( null ); 在构造函数的末尾。我什至读过Background color of JTextField doesn't become 'grayed out' when disabled after the background color had been changed before和 JTextField background color on enable/disable但无法想出一种方法来做我想做的事。我正在使用 Netbeans 8(Nimbus 主题)。如果我将 LaF 设置为 Windows，那么颜色是相同的，但是如何使 Nimbus 本身的颜色相同？
最佳答案
“非 Activity ”颜色(通常)由外观提供。例如，在 Windows 下，属性 TextField.inactiveBackground 可用于影响不可编辑的背景颜色...
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.ColorUIResource;
public class TestTextField {
public static void main(String[] args) {
new TestTextField();
}
public TestTextField() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
UIManager.put("TextField.inactiveBackground", new ColorUIResource(new Color(255, 0, 0)));
JTextField field = new JTextField("Hello", 10);
field.setEditable(false);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
frame.add(field);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
更新了 Nimbus 示例
Nimbus 就是喜欢困难...
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Path2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.Painter;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.nimbus.AbstractRegionPainter;
public class TestTextField {
public static void main(String[] args) {
new TestTextField();
}
public TestTextField() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JTextField field = new JTextField("Hello", 10);
field.setEditable(false);
field.setEnabled(false);
UIDefaults overrides = new UIDefaults();
overrides.put("TextField.background", new ColorUIResource(Color.RED));
overrides.put("TextField[Enabled].backgroundPainter", new Painter<JTextField>() {
@Override
public void paint(Graphics2D g, JTextField field, int width, int height) {
g.setColor(Color.RED);
g.fill(new Rectangle(0, 0, width, height));
}
});
overrides.put("TextField[Disabled].backgroundPainter", new Painter<JTextField>() {
@Override
public void paint(Graphics2D g, JTextField field, int width, int height) {
g.setColor(Color.GREEN);
Insets insets = field.getInsets();
g.fill(new Rectangle(
insets.left,
insets.top,
width - (insets.left + insets.right),
height - (insets.top + insets.bottom)));
}
});
field.putClientProperty("Nimbus.Overrides", overrides);
// field.putClientProperty("Nimbus.Overrides.InheritDefaults",false);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
frame.add(field);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
我只显示了两个值(默认值和禁用值)，您需要尝试其他值。
TextField.background = DerivedColor(color=255,255,255 parent=nimbusLightBackground offsets=0.0,0.0,0.0,0 pColor=255,255,255
TextField.contentMargins = javax.swing.plaf.InsetsUIResource[top=6,left=6,bottom=6,right=6]
TextField.disabled = DerivedColor(color=214,217,223 parent=control offsets=0.0,0.0,0.0,0 pColor=214,217,223
TextField.disabledText = DerivedColor(color=142,143,145 parent=nimbusDisabledText offsets=0.0,0.0,0.0,0 pColor=142,143,145
TextField.focusInputMap = javax.swing.plaf.InputMapUIResource@6a4ba620
TextField.font = javax.swing.plaf.FontUIResource[family=SansSerif,name=sansserif,style=plain,size=12]
TextField.foreground = DerivedColor(color=0,0,0 parent=text offsets=0.0,0.0,0.0,0 pColor=0,0,0
TextFieldUI = javax.swing.plaf.synth.SynthLookAndFeel
TextField[Disabled].backgroundPainter = javax.swing.plaf.nimbus.TextFieldPainter@c87b565
TextField[Disabled].borderPainter = javax.swing.plaf.nimbus.TextFieldPainter@21960050
TextField[Disabled].textForeground = DerivedColor(color=142,143,145 parent=nimbusDisabledText offsets=0.0,0.0,0.0,0 pColor=142,143,145
TextField[Enabled].backgroundPainter = javax.swing.plaf.nimbus.TextFieldPainter@7eee9569
TextField[Enabled].borderPainter = javax.swing.plaf.nimbus.TextFieldPainter@61936199
TextField[Focused].borderPainter = javax.swing.plaf.nimbus.TextFieldPainter@12ecb5db
TextField[Selected].backgroundPainter = javax.swing.plaf.nimbus.TextFieldPainter@72974691
TextField[Selected].textForeground = DerivedColor(color=255,255,255 parent=nimbusSelectedText offsets=0.0,0.0,0.0,0 pColor=255,255,255
有趣的是，如果您使用 field.putClientProperty("Nimbus.Overrides.InheritDefaults",false);，那么您往往会得到一个非常简单的字段(无边框等)。
这种方法只影响单个组件...
关于java - 设置文本字段的禁用背景颜色，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22927451/