javafx如何将变量值从一个控制器传输到另一个控制器 [英] javafx how to transfer variable values from one controller to another

问题描述

我是javafx的新手，我想将变量值从一个控制器转移到另一个控制器，我不知道如何做到这一点。所以请帮助我。

i am new to javafx and i want to transfer variable values from one controller to another and i have no idea how to do this. so please help me.

例如：

我想显示来自的用户名>第一个登录窗口到第二个仪表板窗口那么我应该怎么做才能将userid保存在一个变量中并将其发送到第二个窗口并显示在 label 。

i want to display username from first login window to second dashboard window so what should i do to save userid in one variable and send it to second window and display there in a label.

代码测试：

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.layout.AnchorPane;

/**
 * FXML Controller class
 *
 * @author wabcon
 */
public class AdmissionController implements Initializable {

int userid=0;
    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {
    userid=10001;

    }    

}

我怎么可能将此 userid 发送到下一个窗口控制器。
请帮帮我。
谢谢。

how could i send this userid to next window controller. please help me. Thank you.

推荐答案

我假设您正在为自定义组件执行此操作。

因此，您为自定义组件创建了一个类，并将该类设置为控制器：

So, you create a class for your custom component and set that class as the controller:

public class CustomControl extends AnchorPane implements Initializable {
    String customId;

    public CustomControl() {
        //if you want to set a FXML
        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/res/customControl.fxml"));
        //Defines this class as the controller
        fxmlLoader.setRoot(this);
        //this.getStylesheets().add("/res/style.css"); <- if you want to set a css
        fxmlLoader.setController(this);
        try {
            fxmlLoader.load();
        } catch (IOException exception) {
            throw new RuntimeException(exception);
        }

    }
        public String getCustomId() {
            return customId;
        }
    public void setCustomId(String customId) {
        return this.customId = customId;
    }
    @Override
    public void initialize(URL arg0, ResourceBundle arg1) {
          //Initializes the controller
    }
}

在您的MainController上：

On your MainController:

CustomControl c = new CustomControl();
c.setCustomId("StackOverflow");

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