java JavaFX 如何在单击鼠标时清除 TextField
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/28516654/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
JavaFX how to clear TextField when mouse is clicked on it
提问by RichardK
I have a problem with chosing correct action on TextField. On Java class:
我在 TextField 上选择正确的操作时遇到问题。在 Java 类上：
@FXML
private TextField projectNameInput;
@FXML
private void clearProjectName(MouseEvent event) {
// some if - else statements
projectNameInput.clear();
}
On FXML it looks like this:
在 FXML 上，它看起来像这样：
<TextField fx:id="projectNameInput" onMouseClicked="#clearProjectName" GridPane.columnIndex="1">
I tried most options, in Java I tried (as arg) Event, MouseEvent, ActionEvent, combined with FXML onAction, etc but no luck. What kind of action should I choose that when I click mouse button on TextField it will be automaticly cleared ?
我尝试了大多数选项，在 Java 中我尝试过（作为 arg）Event、MouseEvent、ActionEvent，结合 FXML onAction 等，但没有运气。我应该选择什么样的操作，当我在 TextField 上单击鼠标按钮时它会自动清除？
采纳答案by kintu david
TextField1.addEventFilter(KeyEvent.KEY_TYPED , numeric_Validation(5));
AutoControl.setOnMousePressed(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
TextField1.clear();
}
