如何在JavaFX中处理来自一个类的多个事件类型？ [英] How to handle multiple event types from one class in JavaFX?

问题描述

在JavaFX中，是否可以从一个类处理多个事件类型（例如ActionEvent，MouseEvent等），而无需匿名的EventHandlers？我尝试了以下操作，但这只是创建了一个编译时错误。

In JavaFX, is it possible to handle multiple event types (e.g. ActionEvent, MouseEvent, etc.) from one class, without anonymous EventHandlers? I tried the following, but that just created a compile-time error.

public class GUI extends Application implements EventHandler<ActionEvent>,
                                                EventHandler<MouseEvent>

推荐答案

是的，但不是你期望的方式。

Yes, but not in the way that you are expecting.

据我所知，你不能两次实现相同的界面，即使是不同的类型。

You cannot, as far as I know, implement the same interface twice, even with different types.

EventHandler< ActionEvent>和EventHandler< MouseEvent> 相互冲突，这就是你最终得到错误的原因。

EventHandler<ActionEvent> and EventHandler<MouseEvent> conflict with each other, that is why you end up with the error.

像这样...

class CustomEventHandler implements EventHandler<Event>{

    public void handleActionEvent(ActionEvent ke){
        //handle event
    }

    public void handleMouseEvent(MouseEvent me){
        //handle event
    }

    @Override
    public void handle(Event event) {
        //handle event testing
    }

}

然后你只测试事件是鼠标类型还是动作类型，然后处理该函数的事件。

Then you simply test if the Event is of mouse type or action type, then handle the event from that function.

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