如何使用 javafx 隐藏或停用 TextField 和标签
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How to hide or deactivate a TextField and a Label with javafx
提问by David
I would like to hide or deactivate a TextFieldand its Labelin my JavaFX application.
我想在我的 JavaFX 应用程序中隐藏或停用 aTextField及其Label。
This is what I tried
这是我试过的
myTextField.setVisible(false);
, but it's not working
，但它不起作用
I use Eclipse V4.5.0 on windows 7 with jfx8 V2.0.0
我在带有 jfx8 V2.0.0 的 Windows 7 上使用 Eclipse V4.5.0
采纳答案by Chetan Hallan
There is difference between hiding and deactivating a TextField in JavaFX.
在 JavaFX 中隐藏和停用 TextField 是有区别的。
To Hide :-You need to set the visible property to false.
隐藏：-您需要将可见属性设置为 false。
The possible reason's why its not working in your case is that if you have skipped mentioning the fx:id for your TextField or Label.
它在您的情况下不起作用的可能原因是，如果您跳过提及您的 TextField 或 Label 的 fx:id。
To do so just go through the fxml if using and set the fx:id="myTextField" , and then the same code that you have write will start to work.
为此，如果使用并设置 fx:id="myTextField" ，只需通过 fxml，然后您编写的相同代码将开始工作。
The same is used to hide any Label.
同样用于隐藏任何标签。
To Deactivate :-There is a field named as disable just set that disable property to true to disable or deactivate any field.
停用：-有一个名为 disable 的字段，只需将该禁用属性设置为 true 即可禁用或停用任何字段。
回答by Seiran
I am not sure that I understand correctly your question, but I will try to answer to what I understand.
我不确定我是否正确理解了您的问题，但我会尽力回答我的理解。
if you only want to deactivate TextFieldyou can use:
如果您只想停用，TextField您可以使用：
myTextField.setEditable(false);
This will not "hide" the TextFieldit will be only not editable.
这不会“隐藏”TextField它只是不可编辑。
Based on your provided code, the problem might be in static created (in the FXML) TextField. What I suggest is to try and create the Paneand the TextFielddynamically in the runtime.
Here is simple example how to create and use JavaFX components in the runtime :
根据您提供的代码，问题可能出在 static created (in the FXML) 中TextField。我的建议是尝试在运行时动态创建Pane和TextField。以下是如何在运行时创建和使用 JavaFX 组件的简单示例：
public class ButtonInPane extends Application{
// Override the start method in the Application class
Button btn=new Button("OK");
HBox cont;
TextField myTextField;
public void start(Stage stage1){
Label myLable=new Label("Some Lable");
myTextField=new TextField("Some text");
cont=new HBox();
cont.getChildren().addAll(myLable,myTextField);
Stage stage = new Stage(); //this instead of JFrame
FlowPane pane2 = new FlowPane(); //this instead of JPanel
pane2.getChildren().addAll(btn,cont);
Scene scene2 = new Scene(pane2, 250, 50);
stage.setTitle("Button in a FlowPane"); // Set the stage title
stage.setScene(scene2); // Place the scene in the stage
stage.show(); // Display the stage
stage.setAlwaysOnTop(true);
//set event
setEventActions();
}
private void handlePlayAction() {
cont.setVisible(false);
//OR myTextField.setVisible(false);
}
private void setEventActions() {
this.btn.setOnAction(event -> this.handlePlayAction());
}
public static void main(String[] args)
{ launch(args);
}
}
回答by Hossein ElDelbani
I understand that you want to hide/show a text field (javaFX), i usually use the same method you mentioned assume that the text field variable name is field then:
我知道你想隐藏/显示一个文本字段（javaFX），我通常使用你提到的相同方法假设文本字段变量名称是字段然后：
to hide it use
隐藏它使用
field.setVisible(false);
to show it use
显示它使用
field.setVisible(true);
and it works always for me.
它总是对我有用。
回答by Ojonugwa Jude Ochalifu
You can also do this for a Label in your .fxmlfile like this:
您还可以对.fxml文件中的 Label 执行此操作，如下所示：
<Label layoutX="349.0" layoutY="85.0"
text="Label" visible="false" fx:id="actionSuccessLabel"/>
and then display it later in your Controller class like this:
然后稍后在您的 Controller 类中显示它，如下所示：
actionSuccessLabel.setVisible(true);
回答by Maxime Durand
Don't forget to do the setVisibleor the visible property binding afterthe new function.
不要忘记在新函数之后进行setVisible或visible 属性绑定。
TextField textField = new TextField(field.getValue());
textField.visibleProperty().bind(field.getVisibleProperty());
回答by Niloy Quazi
You can use:
您可以使用：
myTextField.setDisable(true);
myTextField.setDisable(true);
It will disable field for a particular Action.
它将禁用特定操作的字段。
