Get Checked items in Checkbox tree-view JavaFx

Question

I am creating application in javaFX, Where I have used Treeview
with CheckBoxTreeItem of String as its nodes. I want to get all checked item in the treeview , How do I achieve that?

Heres code :

private TreeView<String> treeView_businessAreas;
Set<String> businessAreas = config.getBusinessAreas();
    CheckBoxTreeItem<String> item = null;
    for (String businessArea : businessAreas) {
        item = new CheckBoxTreeItem<>(businessArea);
        root.getChildren().add(item);
    }



    treeView_businessAreas.setRoot(root);

Answer 1

This is the code that you need:

treeView_businessAreas.getSelectionModel().getSelectedItems().addListener(new ListChangeListener<TreeItem>() {

    @Override
    public void onChanged(Change<? extends TreeItem> change) {
        ObservableList<TreeItem<String>> allSelectedItems = (ObservableList<TreeItem<String>>) treeView_businessAreas.getSelectionModel().getSelectedItems();
        //DO SOMETHING HERE WITH THE SELECTED ITEMS
    }

});