当使用 fxml 作为 fxml 中的组件时，JavaFX FXML 没有正确地看到我的 Controller 方法 "Controller is not defined on root component"

标签 java javafx fxml scenebuilder

我正在创建丰富的 UI 应用程序，我在 FXML 中使用 FXML，每个部分都有单独的 Controller 。我决定关注this教程并使用我的 fxml 作为组件。所以我使用类作为 Controller 和组件。一切似乎都在工作，但是当我尝试将方法放入我的类/ Controller 时，我遇到了困难。我编辑了我的 FXML，所以我没有将 Controller 直接放入其中。但是使用类本身。这就是有问题的行所在的地方

<fx:root fx:id="profilePane" onMouseClicked="#select" onMouseEntered="#hoverOver" onMouseExited="#hoverOut" type="javafx.scene.layout.Pane" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">...etc

每个方法都是红色的，表示 Controller 未在根组件上定义 我知道我已从我的 fxml 中删除了该部分。但是它如何在我遵循的教程中起作用？这是我使用的组件类

imports etc..
public class FxmlProfilePanel extends Pane implements Initializable{

    @FXML
    private ToggleButton toggleButton;

    @FXML
    private Pane profilePane;

    private FadeTransition fadeTransition=new FadeTransition(Duration.millis(500),toggleButton);


    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO


        System.out.println("Is fx thread?:"+Platform.isFxApplicationThread());
    }   

    public FxmlProfilePanel(){
        FXMLLoader fxmlLoader=new FXMLLoader(getClass().getResource("/bitcompile/ecps/fxml/FxmlProfilePanel.fxml"));
        fxmlLoader.setRoot(this);
        fxmlLoader.setController(this);
        try {
            fxmlLoader.load();
        } catch (IOException ex) {
            Logger.getLogger(FxmlProfilePanel.class.getName()).log(Level.SEVERE, null, ex);
        }
    }


    public void hoverOver(MouseEvent event){
        Platform.runLater(() -> {
            if(!toggleButton.isSelected()){
            toggleButton.setText("Select profile");
            fadeTransition.setFromValue(0);
            fadeTransition.setToValue(1.0);
            fadeTransition.play();

            }else{
            toggleButton.setText("Deselect profile");
            fadeTransition.setFromValue(0);
            fadeTransition.setToValue(1.0);
            fadeTransition.play();
            }
        });
    }

      public void hoverOut(MouseEvent event){
        Platform.runLater(() -> {
            if(toggleButton.isSelected())
            fadeTransition.setFromValue(1.0);
            fadeTransition.setToValue(0);
            fadeTransition.play();
        });
    }

    public void selected(MouseEvent event){
        if(!toggleButton.isSelected()){
          toggleButton.setSelected(true);
          toggleButton.setText("Profile Selected");

        }else{
            toggleButton.setSelected(false);
            toggleButton.setText("Select profile");
        }
    }
}

所以问题是。当我在另一个 fxml 中使用 fxml/controller 作为组件时，另一个 fxml 又在另一个 fxml 等中。我如何从我的组件类中连接我的方法？(我知道该怎么做所有这些都遵循带有单独 Controller 等的普通 fxml 样式，但不是这种方式)。我是否选择了错误的方法？我应该考虑另一种方法吗？感谢任何见解。

完整的fxml代码:

<fx:root fx:id="profilePane" onMouseClicked="#select" onMouseEntered="#hoverOver" onMouseExited="#hoverOut" type="javafx.scene.layout.Pane" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children><AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="384.0" prefWidth="270.0" style="-fx-border-color: #40464A;">
<children>
<StackPane prefHeight="430.0" prefWidth="270.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<Pane prefWidth="270.0">
<children><ImageView fitHeight="288.0" fitWidth="270.0" layoutY="49.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@../resources/images/category/TechnologyTemp.png" />
</image>
<StackPane.margin>
<Insets top="45.0" />
</StackPane.margin>
<viewport>
<Rectangle2D />
</viewport></ImageView>
</children>
</Pane><BorderPane layoutX="79.0" layoutY="100.0" prefHeight="258.0" prefWidth="270.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<top>
<Pane prefHeight="49.0" prefWidth="268.0" style="-fx-background-color: white;">
<children><VBox prefHeight="143.0" prefWidth="270.0" BorderPane.alignment="CENTER">
<children><Label text="Adobe">
<font>
<Font name="System Bold" size="15.0" />
</font>
<padding>
<Insets left="10.0" top="5.0" />
</padding>
</Label><Label text="Adobe Systems,inc">
<font>
<Font name="System Bold" size="14.0" />
</font>
<padding>
<Insets bottom="3.0" left="10.0" />
</padding>
</Label>
<Pane layoutX="-1.0" opacity="0.82" prefHeight="82.0" prefWidth="220.0">
<children><TextArea cache="true" editable="false" focusTraversable="false" mouseTransparent="true" pickOnBounds="false" prefHeight="82.0" prefWidth="268.0" style="-fx-background-radius: 0;" text="Oracle continually applies good corporate governance principles. The composition and activities of the company's Board of Directors, the approach to public disclosure" wrapText="true">
<VBox.margin>
<Insets top="53.0" />
</VBox.margin></TextArea>
</children>
</Pane>
</children></VBox>
</children>
</Pane>
</top>
<bottom>
<Pane prefHeight="45.0" prefWidth="270.0" style="-fx-background-color: white;">
<children><VBox prefHeight="55.0" prefWidth="270.0" BorderPane.alignment="CENTER">
<children><Label text="Technology">
<font>
<Font name="System Bold" size="14.0" />
</font>
<padding>
<Insets left="10.0" top="4.0" />
</padding>
</Label><Label text="Software services &amp; provider">
<padding>
<Insets left="10.0" />
</padding>
<font>
<Font size="13.0" />
</font></Label>
</children></VBox>
</children>
</Pane>
</bottom></BorderPane>
</children>
</StackPane><Pane prefHeight="382.0" prefWidth="270.0">
<children><ToggleButton fx:id="toggleButton" layoutX="1.0" layoutY="191.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="268.0" style="-fx-background-radius: 0; -fx-background-color: #57A1DE;" text="Select profile" textFill="WHITE">
<font>
<Font name="System Bold" size="14.0" />
</font></ToggleButton>
</children></Pane>
</children></AnchorPane>
</children>
</fx:root>

最佳答案

它适用于:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class LoadOwnFXML extends Application {

    @Override
    public void start(Stage primaryStage) {


            Scene scene = new Scene(new ProfilPane());
            primaryStage.setTitle("Hello World!");
            primaryStage.setScene(scene);
            primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}

和 ProfilePane 类

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.AnchorPane;

public class ProfilPane extends AnchorPane {

    public ProfilPane() {
        try {
            FXMLLoader loader = new FXMLLoader(getClass().getResource("my.fxml"));
            loader.setRoot(this);
            loader.setController(this);
            loader.load();
        } catch (IOException ex) {
            Logger.getLogger(ProfilPane.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @FXML
    public void select() {
        System.out.println("selected");
    }

    @FXML
    public void hoverOver() {
        System.out.println("hovered");
    }

    @FXML
    public void hoverOut() {
        System.out.println("hovered out");
    }
}

FXML 文件

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.text.*?>
<?import javafx.geometry.*?>
<fx:root fx:id="profilePane" onMouseClicked="#select" onMouseEntered="#hoverOver" onMouseExited="#hoverOut" type="javafx.scene.layout.Pane" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children><AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="384.0" prefWidth="270.0" style="-fx-border-color: #40464A;">
<children>
<StackPane prefHeight="430.0" prefWidth="270.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<Pane prefWidth="270.0">
<children><ImageView fitHeight="288.0" fitWidth="270.0" layoutY="49.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@../resources/images/category/TechnologyTemp.png" />
</image>
<StackPane.margin>
<Insets top="45.0" />
</StackPane.margin>
<viewport>
<Rectangle2D />
</viewport></ImageView>
</children>
</Pane><BorderPane layoutX="79.0" layoutY="100.0" prefHeight="258.0" prefWidth="270.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<top>
<Pane prefHeight="49.0" prefWidth="268.0" style="-fx-background-color: white;">
<children><VBox prefHeight="143.0" prefWidth="270.0" BorderPane.alignment="CENTER">
<children><Label text="Adobe">
<font>
<Font name="System Bold" size="15.0" />
</font>
<padding>
<Insets left="10.0" top="5.0" />
</padding>
</Label><Label text="Adobe Systems,inc">
<font>
<Font name="System Bold" size="14.0" />
</font>
<padding>
<Insets bottom="3.0" left="10.0" />
</padding>
</Label>
<Pane layoutX="-1.0" opacity="0.82" prefHeight="82.0" prefWidth="220.0">
<children><TextArea cache="true" editable="false" focusTraversable="false" mouseTransparent="true" pickOnBounds="false" prefHeight="82.0" prefWidth="268.0" style="-fx-background-radius: 0;" text="Oracle continually applies good corporate governance principles. The composition and activities of the company's Board of Directors, the approach to public disclosure" wrapText="true">
<VBox.margin>
<Insets top="53.0" />
</VBox.margin></TextArea>
</children>
</Pane>
</children></VBox>
</children>
</Pane>
</top>
<bottom>
<Pane prefHeight="45.0" prefWidth="270.0" style="-fx-background-color: white;">
<children><VBox prefHeight="55.0" prefWidth="270.0" BorderPane.alignment="CENTER">
<children><Label text="Technology">
<font>
<Font name="System Bold" size="14.0" />
</font>
<padding>
<Insets left="10.0" top="4.0" />
</padding>
</Label><Label text="Software services &amp; provider">
<padding>
<Insets left="10.0" />
</padding>
<font>
<Font size="13.0" />
</font></Label>
</children></VBox>
</children>
</Pane>
</bottom></BorderPane>
</children>
</StackPane><Pane prefHeight="382.0" prefWidth="270.0">
<children><ToggleButton fx:id="toggleButton" layoutX="1.0" layoutY="191.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="268.0" style="-fx-background-radius: 0; -fx-background-color: #57A1DE;" text="Select profile" textFill="WHITE">
<font>
<Font name="System Bold" size="14.0" />
</font></ToggleButton>
</children></Pane>
</children></AnchorPane>
</children>
</fx:root>

关于当使用 fxml 作为 fxml 中的组件时，JavaFX FXML 没有正确地看到我的 Controller 方法 "Controller is not defined on root component"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23293759/

上一篇：java - 我如何可视化查找列表最大数量的递归实现？

下一篇：java - 有没有办法注释代码块的每一行？

相关文章：

java - 尝试使用 lucene 获得更多匹配

java - Selenium webdriver 正在寻找 Chrome.exe 的错误路径

java - 在超时连接调用后 Java 线程会发生什么

Javafx如何触发舞台布局更新

java - 如何找到 fxml 文件以便我的 JavaFX 项目可以在任何 PC 上轻松运行？

java - 创建具有不同样式的大量文本 - JavaFX FXML

java - 用于迭代/取消引用混合对象类型列表的 instanceof 和 if-else 语句的替代方案

javafx - 自定义 javafx 3d 框或旋转堆栈 Pane

Java FX "mass"处理按钮

spinner - 如何在微调器中设置 3 个值

©2024 IT工具网  联系我们