如何将图像添加到JavaFx TableView列

Z时代
2024-01-10
分类：问答

我正在尝试找到一种将图像添加到JavaFx

TableView列的方法，该图像具有通过hibernate从H2数据库填充的其他列中的数据。TableView是在JavaFx Scene Builder中设计的。

到目前为止，这是我设法做到的：

public class HomeController implements Initializable {
    @FXML
    private TableView<NewBeautifulKiwi> KIWI_TABLE;
    @FXML
    private TableColumn<NewBeautifulKiwi, Image> KiwiId;
    @FXML
    private TableColumn<NewBeautifulKiwi, String> Kiwi;
    public ObservableList<NewBeautifulKiwi> data;
    // Initializes the controller class.
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        KiwiId.setCellFactory(new Callback<TableColumn<NewBeautifulKiwi, Image>, TableCell<NewBeautifulKiwi, Image>>() {
            @Override
            public TableCell<NewBeautifulKiwi, Image> call(TableColumn<NewBeautifulKiwi, Image> param) {
                //Set up the ImageView
                final ImageView imageview = new ImageView();
                imageview.setFitHeight(50);
                imageview.setFitWidth(50);
                //Set up the Table
                TableCell<NewBeautifulKiwi, Image> cell = new TableCell<NewBeautifulKiwi, Image>() {
                    public void updateItem(NewBeautifulKiwi item, boolean empty) {
                        if (item != null) {
                            imageview.setImage("arrow.png");
                        }
                    }
                };
                // Attach the imageview to the cell
                cell.setGraphic(imageview);
                return cell;
            }
        });
        Kiwi.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, String>("Kiwi"));
        KIWI_TABLE.setItems(gobbledyGook());
    }
    private ObservableList<NewBeautifulKiwi> gobbledyGook() {
        data = FXCollections.observableArrayList();
        Session session = HibernateUtil.getSessionFactory().openSession();
        Transaction transaction = null;
        try {
            transaction = session.beginTransaction();
            List courses = session.createQuery("from KIWI_TABLE").list();
            for (Iterator iterator = courses.iterator(); iterator.hasNext();) {
                NewBeautifulKiwi course = (NewBeautifulKiwi) iterator.next();
                System.out.println(course.getKiwi());
                data.add(course);
            }
            transaction.commit();
        } catch (HibernateException e) {
            transaction.rollback();
            e.printStackTrace();
        } finally {
            session.close();
        }
        return data;
    }
}

我imageview.setImage("arrow.png");说那是一个错误Incopatibletypes: String cannot be

converted to Image。

这是我第一次尝试将图像添加到TableView中。

从昨天开始，我一直四处张望，但现在似乎被困住了。我希望能有所帮助。我真的很感谢您的帮助。

@Entity(name = "KIWI_TABLE")
public class NewBeautifulKiwi implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int KiwiId;
    private String Kiwi;
    public int getKiwiId() {
        return KiwiId;
    }
    public void setKiwiId(int KiwiId) {
        this.KiwiId = KiwiId;
    }
    public String getKiwi() {
        return Kiwi;
    }
    public void setKiwi(String Kiwi) {
        this.Kiwi = Kiwi;
    }
}

谢谢大家。

回答：

更新资料

由于该链接不起作用，并且我有多个请求对其进行更新，因此我用一个新的答案对其进行了更新。

从问题上来说，我不确定OP是否要从某个字段中加载图像，NewBeautifulKiwi或者他是否希望对所有数据显示相同的图像。因此，我将为这两种方法回答。

方法1对我而言意义不大，仅因为我对OP的要求感到困惑而存在。

问题是大约4岁，我认为从OP中进行澄清不会产生任何影响。建议的解决此类问题的方法是2。

arrow.png为所有行加载相同的

码：

KiwiId.setCellFactory(new Callback<TableColumn<NewBeautifulKiwi, Integer>, TableCell<NewBeautifulKiwi, Integer>>() {
    @Override
    public TableCell<NewBeautifulKiwi, Integer> call(TableColumn<NewBeautifulKiwi, Integer> param) {
      ...
      TableCell<NewBeautifulKiwi, Integer> cell = new TableCell<NewBeautifulKiwi, Integer>() {
         public void updateItem(Integer item, boolean empty) {
            if (item != null) {
              imageview.setImage(new Image("arrow.png"));
            }
         }
      };
      // Attach the imageview to the cell
      cell.setGraphic(imageview);
      return cell;
    }
 });
 KiwiId.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, Integer>("KiwiId"));

从中的a属性加载图片NewBeautifulKiwi。由于该列TableColumn<NewBeautifulKiwi, Image> KiwiId;似乎应该将自身绑定到缺少的属性图像NewBeautifulKiwi。我将介绍它，并稍后使用它绑定到此列的（重命名为“ kiwiImageCol”）单元格值工厂。

码：

@Entity(name = "KIWI_TABLE")
public class NewBeautifulKiwi implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int KiwiId;
    private String Kiwi;
    private Image kiwiImage;
    public int getKiwiId() {
        return KiwiId;
    }
    public void setKiwiId(int KiwiId) {
        this.KiwiId = KiwiId;
    }
    public String getKiwi() {
        return Kiwi;
    }
    public void setKiwi(String Kiwi) {
        this.Kiwi = Kiwi;
    }
    public Image getKiwiImage() {
        return kiwiImage;
    }
    public void setKiwiImage(Image kiwiImage) {
        this.kiwiImage = kiwiImage;
    }
}

在表中，我将TableColumn绑定到此新属性

...
@FXML
private TableColumn<NewBeautifulKiwi, Image> KiwiImageCol;
...
@Override
public void initialize(URL url, ResourceBundle rb) {
    KiwiImageCol.setCellFactory(param -> {
       //Set up the ImageView
       final ImageView imageview = new ImageView();
       imageview.setFitHeight(50);
       imageview.setFitWidth(50);
       //Set up the Table
       TableCell<NewBeautifulKiwi, Image> cell = new TableCell<NewBeautifulKiwi, Image>() {
           public void updateItem(Image item, boolean empty) {
             if (item != null) {
                  imageview.setImage(item);
             }
           }
        };
        // Attach the imageview to the cell
        cell.setGraphic(imageview);
        return cell;
   });
   KiwiImageCol.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, Image>("kiwiImage"));
}