java - 获取 JavaFX 中 ListView 的最后一个选定项

Question

我需要在 JavaFX 的 MultipleSelectionMode 中获取 ListView 的最后一个选定项目。我的代码在下面，但它没有给我最后选择的项目。它似乎从所选项目中随机给出一个项目。

addDocumentPagesListView.getSelectionModel().getSelectedItems().addListener(new ListChangeListener<PageFile>() {

        @Override
        public void onChanged(ListChangeListener.Change<? extends PageFile> change) {
            while (change.next()) {

                if (change.wasAdded()) {
                    List <? extends PageFile> l = change.getAddedSubList();
                    Object o = l.get(l.size() - 1);                        
                    PageFile pf = (PageFile) o;
                    System.out.println("Showing pdf file: " + pf.getFile().getName());
                 }
            }
        }
    });

Answer 1

你应该看看 selectedItemProperty它总是指向最后选择的项目:

The selected item property is most commonly used when the selection model is set to be single selection, but is equally applicable when in multiple selection mode. When in this mode, the selected item will always represent the last selection made.