java 使用 JavaFX 8 场景，在运行时读取键盘输入
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Using JavaFX 8 Scene, Read Keyboard Input while running
提问by JCoder
I have my JavaFX 8 Scene going nicely. Now, while everything else is happening, I would like to continuously check for any KeyEvent/KeyCode while the program is running. I have a Timeline called timeline set to INDEFINITE and I've set my cycle count to indefinite with
我的 JavaFX 8 场景运行良好。现在，当其他一切都在发生时，我想在程序运行时不断检查任何 KeyEvent/KeyCode。我有一个名为时间轴的时间线设置为 INDEFINITE 并且我已将我的周期计数设置为无限期
timeline.setCycleCount(Timeline.INDEFINITE);
I'm looking for an easy method that is also clean and won't make my program choppy.
我正在寻找一种简单的方法，它也很干净并且不会使我的程序断断续续。
回答by ItachiUchiha
You can use a KeyEventlistener to listen to when key is pressed, release, typedor anyof them. It does matter whether you have some infinite loop running on another thread, if the user presses a button, the listener will be called.
您可以使用KeyEvent侦听器来侦听 key 被按下、释放、键入或其中任何一个的时间。您是否在另一个线程上运行一些无限循环很重要，如果用户按下按钮，则将调用侦听器。
You just need to add a listenerto the scene and the key event which you want to listen to.
您只需要在场景中添加一个监听器和您想要监听的关键事件。
scene.addEventHandler(KeyEvent.KEY_PRESSED, (key) -> {
if(key.getCode()==KeyCode.ENTER) {
System.out.println("You pressed enter");
}
});
