问

根节点(TreeItem)未在TreeView中显示

kg9854997 发布于 2023-02-10 14:32

xml

我在.fxml文件中创建TreeView,然后我尝试显示根节点.但它没有显示出来.

这是我的代码.

我也在主要类中给出了这个参考.

public class Mainextends Application {
@FXML
public TreeView soariteTree;
@FXML
public TreeItem rootTreeItem;

请给我任何参考或提示.

1 个回答

你用fxml做了一个小错误,

你可以看到你写的AnchorPane.rightAnchor="167.0"是你的树视图消失了(同样的小错误,锚窗格和树视图的宽度).

用,替换你的滚动窗格,

<ScrollPane fx:id="soariteTreeScrollPane" pref pref AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                              <content>
                                <AnchorPane id="Content" fx:id="soariteTreeAnchorPane" min min pref pref>
                                  <children>
                                    <TreeView fx:id="soariteTree" pref pref showRoot="true" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
                                      <TreeItem expanded="true" value="categories" fx:id="rootTreeItem" />
                                    </TreeView>
                                  </children>
                                </AnchorPane>
                              </content>
                            </ScrollPane>

更新: - 处理鼠标事件

soariteTree.addEventHandler(MouseEvent.MOUSE_PRESSED, new EventHandler<MouseEvent>() {
        @Override
        public void handle(MouseEvent event) {
            if (event.getButton().equals(MouseButton.SECONDARY)) {
                System.out.println(">> " + event.getEventType());
            }
        }
    });

2023-02-10 14:35 回答

奶油泡芙2覀21

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