我正在尝试使用javafx中的fxml创建一个简单的ui。我试图引用我在Controller类的.fxml文件中创建的标签。但由于某种原因，当我查看fx：标签时，我会看到一个错误，其中给出了fx：id。它说Cannot set javafx.scene.control.Label to field 'leaders'。但它适用于ImageView。代码如下：
customcontrol.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.canvas.*?>
<?import javafx.scene.text.*?>
<?import javafx.geometry.*?>
<?import javafx.scene.image.*?>
<?import java.lang.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<fx:root prefHeight="800.0" prefWidth="1005.0" type="javafx.scene.layout.VBox" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<BorderPane prefHeight="800.0" prefWidth="1005.0">
<top>
<MenuBar BorderPane.alignment="CENTER">
<menus>
<Menu mnemonicParsing="false" text="About">
<items>
<MenuItem mnemonicParsing="false" text="Close" />
</items>
</Menu>
</menus>
</MenuBar>
</top>
<left>
<ListView fx:id="mylist" minHeight="765.0" minWidth="250.0" prefHeight="771.0" prefWidth="250.0" BorderPane.alignment="CENTER_LEFT" />
</left>
<center>
<ScrollPane hbarPolicy="NEVER" prefViewportHeight="771.0" prefViewportWidth="750.0" vbarPolicy="ALWAYS">
<content>
<AnchorPane prefHeight="850.0" prefWidth="750.0" BorderPane.alignment="CENTER">
<children>
<ImageView fx:id="icon" fitHeight="200.0" fitWidth="150.0" layoutX="14.0" layoutY="14.0" pickOnBounds="true" preserveRatio="true" />
<ImageView fx:id="leader" fitHeight="200.0" fitWidth="150.0" layoutX="586.0" layoutY="14.0" pickOnBounds="true" preserveRatio="true" />
<Label fx:id="title" layoutX="231.0" layoutY="88.0" text="Punjab -2017" textAlignment="CENTER">
<font>
<Font name="American Typewriter Bold" size="43.0" />
</font>
</Label>
<Label fx:id="overview" layoutX="15.0" layoutY="283.0" text="Party Overview">
<font>
<Font name="AppleGothic Regular" size="23.0" />
</font>
</Label>
<Separator layoutX="15.0" layoutY="316.0" prefHeight="3.0" prefWidth="689.0" AnchorPane.bottomAnchor="1181.0" AnchorPane.leftAnchor="15.0" AnchorPane.rightAnchor="46.0" AnchorPane.topAnchor="316.0">
<opaqueInsets>
<Insets />
</opaqueInsets>
</Separator>
<Label fx:id="overtext" layoutX="17.0" layoutY="336.0" prefHeight="172.0" prefWidth="686.0" text="Label">
<font>
<Font name="Calibri Light" size="15.0" />
</font>
</Label>
<Label fx:id="prediction" layoutX="19.0" layoutY="497.0" text="Election Prediction">
<font>
<Font name="AppleGothic Regular" size="23.0" />
</font>
</Label>
<Label fx:id="predictext" layoutX="21.0" layoutY="547.0" prefHeight="172.0" prefWidth="686.0" text="Label">
<font>
<Font name="Calibri Light" size="15.0" />
</font>
</Label>
<Separator layoutX="19.0" layoutY="530.0" prefHeight="3.0" prefWidth="689.0">
<opaqueInsets>
<Insets />
</opaqueInsets>
</Separator>
<Label fx:id="leaders" layoutX="19.0" layoutY="719.0" text="Major Leaders">
<font>
<Font name="AppleGothic Regular" size="23.0" />
</font>
</Label>
<Separator layoutX="19.0" layoutY="752.0" prefHeight="3.0" prefWidth="689.0">
<opaqueInsets>
<Insets />
</opaqueInsets>
</Separator>
<Label layoutX="21.0" layoutY="769.0" prefHeight="172.0" prefWidth="686.0" text="Label" fx:id="leaderstext">
<font>
<Font name="Calibri Light" size="15.0" />
</font>
</Label>
</children>
</AnchorPane>
</content>
</ScrollPane>
</center>
</BorderPane>
</children>
</fx:root>
CustomControl.java
package sample;
import java.awt.*;
import java.io.File;
import java.io.IOException;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.VBox;
/**
* Sample custom control hosting a text field and a button.
*/
public class CustomControl extends VBox {
@FXML
private ListView mylist;
@FXML
private ImageView icon;
@FXML
private ImageView leader;
@FXML
private Label overview;
@FXML
private Label overtext;
@FXML
private Label prediction;
@FXML
private Label predictext;
@FXML
private Label leaders;
@FXML
private Label leaderstext;
public CustomControl() {
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("custom_control.fxml"));
fxmlLoader.setRoot(this);
fxmlLoader.setController(this);
try {
fxmlLoader.load();
} catch (IOException exception) {
throw new RuntimeException(exception);
}
}
public void setList(){
mylist.setItems(FXCollections.observableArrayList("Home","BJP","Congress","AAP"));
}
public void setOverview(String txt) {
overview.setText(txt);
}
public void setOverviewtext(String txt){
overtext.setText(txt);
}
public void setLeader(String data){
File file =new File(data);
Image image = new Image(file.toURI().toString());
leader.setImage(image);
}
public void setIcon(String data){
File file =new File(data);
Image image = new Image(file.toURI().toString());
icon.setImage(image);
}
public void setPrediction(String txt){
prediction.setText(txt);
}
public void setPredictext(String txt){
predictext.setText(txt);
}
public void setLeaders(String txt){
leaders.setText(txt);
}
public void setLeaderstext(String txt){
leaderstext.setText(txt);
}
}
Main.java
package sample;
import javafx.application.Application;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage stage) throws Exception {
CustomControl customControl = new CustomControl();
// customControl.setText("Hello!");
customControl.setList();
customControl.setIcon("/Users/Arun/Dropbox/Camera Saves/camera uploads/2015-04-02 16.23.11.jpg");
customControl.setLeader("/Users/Arun/Dropbox/Camera Saves/camera uploads/2015-04-02 16.23.11.jpg");
stage.setScene(new Scene(customControl));
stage.setTitle("Custom Control");
stage.setWidth(1017);
stage.setHeight(800);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
提前一百万谢谢......
答案 0 :(得分：2)
您输入错误。删除import java.awt.*;并为JavaFX控件添加正确的导入（import javafx.scene.control.Label;等）