JavaFX的通外汇：id来控制器或参数FXML的OnAction方法 [英] javafx pass fx:id to controller or parameter in fxml onAction method

问题描述

有没有办法将参数传递给在FXML文件的OnAction方法呢？或者，我可以以某种方式获取外汇：？调用该方法的OnAction组件的ID

Is there any way to pass parameters to the onAction methods in the fxml files? Alternatively, can I somehow get the fx:id of the component that called the onAction method?

我会有几个按钮，应该做同样的事情，说的5个按钮与IDS Button1的 - button5，当pressed，应打印相应的号码1-5。我不希望有5的OnAction方法是相同高达此变量

I have several Buttons that should do the same thing, say 5 buttons with ids button1 - button5 that, when pressed, should print the corresponding number 1-5. I don't want to have 5 onAction methods that are identical up to this variable.

任何帮助AP preciated，

Any help appreciated,

推荐答案

呼叫只是一个处理程序，该actionEvent.source是发起事件的对象。

Call just one handler, the actionEvent.source is the object that originated the event.

试试这个：

myButton1.setOnAction(new MyButtonHandler());
myButton2.setOnAction(new MyButtonHandler());

private class MyButtonHandler implements EventHandler<ActionEvent>{
    @Override
    public void handle(ActionEvent evt) {
        if (evt.getSource().equals(myButton1)) {
          //do something
        } else if (evt.getSource().equals(myButton2)) {
          //do something
        }
    }
}

或者

myButton1.addEventHandler(ActionEvent.ACTION, new MyButtonHandler());
myButton2.addEventHandler(MouseEvent.CLICKED, new MyButtonHandler());

private class MyButtonHandler implements EventHandler<Event>{
    @Override
    public void handle(Event evt) {
        if (evt.getSource().equals(myButton1)) {
          //do something
        } else if (evt.getSource().equals(myButton2)) {
          //do something
        }
    }
}

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