javafx-2 - 如何在 JavaFX 中实现可以处理任何 EventType 的真正自定义事件处理程序？

Question

我计划创建一个单一的 EventHandler 类，它将处理我的 JavaFX 类中所有控件的所有类型的事件。

例如，我添加了我的自定义事件处理程序类以按以下方式处理 Action 事件，它工作正常:

userNameText.addEventHandler(ActionEvent.ACTION, new DataChangeHandler());
cmbBox.addEventHandler(ActionEvent.ACTION, new DataChangeHandler());
btn.addEventHandler(ActionEvent.ACTION, new DataChangeHandler());

这是我的客户事件处理程序类代码:

public class DataChangeHandler implements EventHandler<ActionEvent> {    
    public void handle(ActionEvent event) {
            System.out.println("My Very Own Private Button Handler");
        }               
}

但是当我尝试将其中一个 addEventHandlers 更改为 MouseEvent 并按以下方式修改主 EventHandler 类时，它显示错误“The Interface eventhandler cannot be implemented more than once with different arguements”:

userNameText.addEventHandler(ActionEvent.ACTION, new DataChangeHandler());
cmbBox.addEventHandler(MouseEvent.CLICKED, new DataChangeHandler());
btn.addEventHandler(ActionEvent.ACTION, new DataChangeHandler());

public class DataChangeHandler implements EventHandler<ActionEvent>, EventHandler<MouseEvent> {    
    public void handle(ActionEvent event) {
            System.out.println("My Very Own Private Button Handler - ACTIONEVENT");
        }

        @Override
    public void handle(MouseEvent arg0) {
        System.out.println("My Very Own Private Button Handler - MOUSEEVENT");

    }
}

还有其他方法可以实现吗？请帮忙。提前致谢。

Answer 1

试试这个

public class DataChangeHandler implements EventHandler<Event>{
    @Override
    public void handle(Event event) {
        System.out.println("My Very Own Private Handler For All Kind Of Events");
    }
}