带有图像的 JCheckBox

Question

我怎样才能拥有带有图像的复选框组？

我使用：

for (String testata : listaTestate) {
        JCheckBox checkbox = new JCheckBox();
        ImageIcon imgTestata = new ImageIcon("src/img/"+testata+".png");
        checkbox.setName(testata);
        checkbox.setBackground(new Color(194, 169, 221));
        checkbox.setSelected(true);
        testate.add(checkbox);
        JLabel label = new JLabel(imgTestata);
        label.setBackground(new Color(194, 169, 221));
        label.setPreferredSize(new Dimension(500, 50));
        testate.add(label);
    }

但是 ImageIcon 和 JCheckBox 之间有很多 space。

Answer 1

space 发生是因为您在循环中创建的每个标签实例上调用 .setPreferredSize(new Dimension(500, 50));，这会产生宽标签，因此将其删除，结果会很好。

Answer 2

在不了解布局管理器的情况下，很难做到 100%，但如果我这样做，我可能会使用 GridBagLayout...

testate.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridy = 0;
gbc.insets = new Insets(4, 4, 4, 4);
gbc.anchor = GridBagConstraints.WEST;
for (String testata : listaTestate) {
    gbc.gridx = 0;
    JCheckBox checkbox = new JCheckBox();
    ImageIcon imgTestata = new ImageIcon(getClass().getResource("/img/"+testata+".png"));
    checkbox.setName(testata);
    checkbox.setBackground(new Color(194, 169, 221));
    checkbox.setSelected(true);
    testate.add(checkbox, gbc);
    gbc.gridx++;
    JLabel label = new JLabel(imgTestata);
    label.setBackground(new Color(194, 169, 221));
    testate.add(label, gbc);
    gbc.gridy++;
}

您可能还想通读一下：

Retrieving Resources
Location-Independent Access to Resources
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
Reading/Loading an Image
Laying Out Components Within a Container
How to Use GridBagLayout

带有图像的 JCheckBox

JCheckBox with Image

java

swing

jlabel

jcheckbox

imageicon