问题描述
我有一个 JList ，其项目名称非常长，导致水平滚动条显示在滚动窗格中。
I have a JList with very long item names that cause the horizontal scroll-bar to appear in scroll-pane.
无论如何，我可以自动换行，以便整个项目名称出现在2行中，但只需点击一下即可选择？ IE它仍应表现作为单个项目，但显示分为两行。
Is there anyway that I can word wrap so that the whole whole item name appears in 2 rows yet can be selected in one click? I.E it should still behave as a single item but be displayed in two rows.
以下是看到下面的例子后我做的事情
Here is what I did after seeing the example below
我在我的项目MyCellRenderer中添加了一个新类，然后我添加了 MyList.setCellRenderer（new MyCellRenderer（80））; 在我的列表的帖子创建代码中。还有什么我需要做的吗？
I added a new class to my project MyCellRenderer and then I went added MyList.setCellRenderer(new MyCellRenderer(80)); in the post creation code of my List. Is there anything else I need to do?
推荐答案
是的，使用安德鲁的代码，我想出了类似的东西：
Yep, using Andrew's code, I came up with something like this:
import java.awt.Component;
import javax.swing.*;
public class JListLimitWidth {
public static void main(String[] args) {
String[] names = { "John Smith", "engelbert humperdinck",
"john jacob jingleheimer schmidt" };
MyCellRenderer cellRenderer = new MyCellRenderer(80);
JList list = new JList(names);
list.setCellRenderer(cellRenderer);
JScrollPane sPane = new JScrollPane(list);
JPanel panel = new JPanel();
panel.add(sPane);
JOptionPane.showMessageDialog(null, panel);
}
}
class MyCellRenderer extends DefaultListCellRenderer {
public static final String HTML_1 = "<html><body style='width: ";
public static final String HTML_2 = "px'>";
public static final String HTML_3 = "</html>";
private int width;
public MyCellRenderer(int width) {
this.width = width;
}
@Override
public Component getListCellRendererComponent(JList list, Object value,
int index, boolean isSelected, boolean cellHasFocus) {
String text = HTML_1 + String.valueOf(width) + HTML_2 + value.toString()
+ HTML_3;
return super.getListCellRendererComponent(list, text, index, isSelected,
cellHasFocus);
}
}
这篇关于JList项目中的自动换行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！