求各位大大帮忙了、我是一个新手!java.Swing中Tree如何设置默认所有子节点展开、、、
tree.scrollPathToVisible(new TreePath(node.getPath()));
但是Tree的节点还是不能打开、、
求帮忙了、、、
------解决方案--------------------
遍历所有节点,展开每个
------解决方案--------------------
just do like this
for(int i=0; i<tree.getRowCount(); i++)
{
tree.expandRow(i);
}
------解决方案--------------------
使用方法:SwingUtil.expandTree(tree);
public class SwingUtil {
public static void expandTree(JTree tree) {
TreeNode root = (TreeNode) tree.getModel().getRoot();
expandTree(tree, new TreePath(root));
}
public static void expandTree(JTree tree, TreePath path) {
TreeNode node = (TreeNode) path.getLastPathComponent();
// Go to leaf
if (node.getChildCount() > 0) {
Enumeration<TreeNode> children = node.children();
while (children.hasMoreElements()) {
TreeNode n = children.nextElement();
TreePath newPath = path.pathByAddingChild(n);
expandTree(tree, newPath);
}
}
tree.expandPath(path);
}
}