我是JavaFX的新手。 我尝试了一个具有自定义单元格列表视图的应用程序。在列表视图单元格中，我有一个HBox，其中包含4个标签，1个imageview和2个按钮。我使用SceneBuilder创建了一个单元。我无法处理任何按钮的Onaction事件。您能检查一下我的代码并提出建议吗？所有标签和imageview都可以正常工作。

1. 我的列表视图在MainSCeneController中声明

public class MainSceneController implements Initializable {

    @FXML public ListView<model.Post> listView = new ListView<>();;
    ObservableList <model.Post> StudentObservablelist;
     public void LoadDataButtonPushed(actionEvent actionEvent) {

                StudentObservablelist = FXCollections.observableArrayList();
                for (int i = 0; i < Uni_Link.All_posts.size(); i++) {
                    StudentObservablelist.add(Uni_Link.All_posts.get(i));
                }
                listView.setItems(StudentObservablelist);
                listView.setCellFactory(new Callback<ListView<Post>,ListCell<Post>>() {
                    @Override
                    public ListCell<Post> call(ListView<Post> studentListView) {
                        return new StudentListViewCell();
                    }
                });

    }

1. 列表单元格看起来像这样：

public class StudentListViewCell extends ListCell<Post> {
    @FXML private HBox hMain /*,hButton*/;
    //@FXML private VBox V1,V2,V3,V4;
    @FXML private ImageView image = new ImageView();
    @FXML private Label label1  = new Label();
    @FXML private Label label2 = new Label() ;
    @FXML private Label label3 = new Label();
    @FXML private Label label4 = new Label();
    @FXML private Label label5 = new Label();
    @FXML private Label label6 = new Label();
    @FXML private Button reply = new Button("Reply") ;
    @FXML private Button more_details = new Button("More Details") ;

    FXMLLoader loader;

    public StudentListViewCell(){
        super();
    }

    protected void updateItem(Post post,boolean empty) {
        super.updateItem(post,empty);

        setText(null);  // No text in label of super class
        if (empty){
            setGraphic(null);
        }
        else {
            if(loader == null) {
                   try {
                          loader = new FXMLLoader(getclass().getResource("/view/ListViewCell.fxml"));
                          loader.setController(this);
                          loader.load();
                   } catch (IOException e) {
                          e.printStackTrace();
                   }   
            }
            label1.setText("Title: "+post.getTitle());
            label2.setText("Status: "+post.getStatus());
            label3.setText("Creator: "+post.getcreator_ID());
            String photo = post.getPhoto();
            image.setImage(new Image("/Images/"+photo));
            setGraphic(hMain);

在此处，使用Scenebuilder创建ListViewCell.fxml文件。看起来像这样

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

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>

<HBox fx:id="hMain" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="110.0" prefWidth="691.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <VBox fx:id="V3" prefHeight="110.0" prefWidth="130.0">
         <children>
            <ImageView fx:id="image" fitHeight="110.0" fitWidth="144.0" pickOnBounds="true" preserveRatio="true" />
         </children>
      </VBox>
      <VBox fx:id="V1" alignment="TOP_CENTER" prefHeight="110.0" prefWidth="117.0" spacing="20.0">
         <children>
            <Label fx:id="label1" text=" " />
            <Label fx:id="label2" text=" " />
         </children>
         <padding>
            <Insets top="20.0" />
         </padding>
      </VBox>
      <VBox fx:id="V2" alignment="TOP_CENTER" layoutX="149.0" layoutY="10.0" prefHeight="110.0" prefWidth="131.0" spacing="20.0">
         <children>
            <Label fx:id="label3" text=" " />
            <Label fx:id="label4" text=" " />
         </children>
         <padding>
            <Insets top="20.0" />
         </padding>
      </VBox>
      <VBox fx:id="V4" alignment="TOP_CENTER" prefHeight="110.0" prefWidth="125.0" spacing="20.0">
         <children>
            <Label fx:id="label5" text=" " />
            <Label fx:id="label6" prefHeight="19.0" prefWidth="116.0" text=" " />
         </children>
         <padding>
            <Insets top="20.0" />
         </padding>
      </VBox>
      <HBox fx:id="hButton" alignment="CENTER_LEFT" prefHeight="110.0" prefWidth="180.0" spacing="20.0">
         <children>
            <Button fx:id="reply" mnemonicParsing="false" onaction="#replyButtonPushed" text="Reply" />
            <Button fx:id="more_details" mnemonicParsing="false" text="More Details" />
         </children>
         <padding>
            <Insets left="20.0" />
         </padding>
      </HBox>
   </children>
</HBox>

我必须处理listButton中每个Post单元格的ReplyButtonPushed方法，该方法是回复按钮的onaction方法。