JavaFX:最初从FXML加载Scene时，将新节点添加到Java代码中的Scene中 [英] JavaFX : Adding a new node to Scene in java code when Scene is initially loaded from FXML

问题描述

当最初从FXML加载Scene时，如何在Java代码中为Scene添加一个新节点? 我已经从FXML加载，如下所示

How can I add a new node to the Scene in java code when Scene is initially loaded from FXML ? I have loaded from FXML as shown below

Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));

Scene scene = new Scene(root, 1000, 600, Color.DODGERBLUE);

例如，现在说如何在Java代码中向场景添加按钮?

Now say for example how do I add button to the scene in Java code?

推荐答案

我不知道您的问题背后的原因.如果要在应用程序或场景初始化期间动态插入一些节点，建议您使用

I do not know the reason behind your question. If what you want is to insert some nodes dynamically during the application or scene initialization, I suggest you use a initialize method at your controller.

此方法必须用@FXML注释并具有以下签名:

This method must be annotated with @FXML and have the following signature:

void initialize()

然后，您可以将必须​​在其上插入按钮的容器注入到控制器中，然后将按钮添加到其中:

Then, you can inject the container where the button must be inserted on the controller and add the button to it:

@FXML
HBox buttonBox // assuming your button container is a HBox
...

@FXML
protected void initialize() {
    buttonBox.getChildren().add(new Button("Click me!"));
}

在构建FXML文件定义的组件之后，将调用方法initialize.

The method initialize is called after the components defined at the FXML file were built.

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