JavaFX 8:调整ListView单元格的高度以适应其ScrollBar

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class ListViewExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        ListView<String> listView = new ListView<>();
        ObservableList<String> items = FXCollections.observableArrayList(
                "Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6", "Item 7", "Item 8", "Item 9", "Item 10",
                "Item 11", "Item 12", "Item 13", "Item 14", "Item 15", "Item 16", "Item 17", "Item 18", "Item 19", "Item 20"
        );
        listView.setItems(items);

        listView.setCellFactory(param -> new ListCell<String>() {
            @Override
            protected void updateItem(String item, boolean empty) {
                super.updateItem(item, empty);

                if (empty || item == null) {
                    setText(null);
                    setGraphic(null);
                } else {
                    setText(item);
                    setPrefHeight(30); // 设置单元格的高度
                }
            }
        });

        VBox root = new VBox(listView);
        Scene scene = new Scene(root, 200, 200);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}