JavaFX中的默认表模型 [英] Default Table Model in JavaFX

问题描述

我在尝试从JavaFX中的表视图中选择单行时遇到了一些问题。

I have encountered some problem when trying to select single row from table view in JavaFX.

以下是我使用数据库中的数据填充表格的方法：

Here is how I populate my table with data from database:

public void populateCategoryTable() {
    data = FXCollections.observableArrayList();
    try {
        db.getConnection();
        String sql = "SELECT * FROM sm_category";
        ResultSet rs = null;
        // Call readRequest to get the result
        rs = db.readRequest(sql);

        while (rs.next()) {
            ObservableList<String> row = FXCollections.observableArrayList();
            //All the rows are added here dynamically 
            row.add(rs.getString("categoryID"));
            data.add(row);
        }
        viewCategory.setItems(data);
        rs.close();
    } catch (SQLException ex) {
        ex.printStackTrace();
        System.out.println("Error SQL!!!");
        System.exit(0);
    }

    TableColumn id = new TableColumn("ID");
    id.setVisible(false);
    id.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<ObservableList, String>, ObservableValue<String>>() {
        public ObservableValue<String> call(TableColumn.CellDataFeatures<ObservableList, String> param) {
            return new SimpleStringProperty(param.getValue().get(0).toString());
        }
    });

    viewCategory.getColumns().addAll(id);

    TableView.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); //Error here
    TableView.TableViewSelectionModel selectionModel = viewCategory.getSelectionModel();
    ObservableList selectedCells = selectionModel.getSelectedCells();
    TablePosition tablePosition = (TablePosition) selectedCells.get(0);
    int row = tablePosition.getRow(); // yields the row that the currently selected cell is in

}

但是，当我尝试插入setSelectionMode代码时，出现错误。它告诉我找不到符号
符号：方法setSelectionMode（int）
location：class TableView

However, when I tried to insert the setSelectionMode code, there is an error. It tells me that cannot find symbol symbol: method setSelectionMode(int) location: class TableView

我记得当我在JavaSwing中执行表时，我使用它来为表设置模型：DefaultTableModel tableModel =（DefaultTableModel）jTable.getModel（）;

I remember when I did table in JavaSwing, I used this to set a model for table: DefaultTableModel tableModel = (DefaultTableModel) jTable.getModel();

但是，我不能这样做在javaFX中。有人可以帮我解决这个问题吗？

However, I cannot do this in javaFX. Anybody could help me fix this?

提前致谢。

推荐答案

tableview的默认选择模式是 SelectionMode.SINGLE 。要将其更改为多次尝试

The default selection mode of tableview is SelectionMode.SINGLE. To change it to multiple try

tableView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);

> 我要做的是选择一个从表中获取行并获取索引

> what am I trying to do is select a single row from table and get the index

获取所选索引：

viewCategory.getSelectionModel().getSelectedIndex();

收听指数的变化：

viewCategory.getSelectionModel().selectedIndexProperty().addListener(new ChangeListener<Number>() {
    @Override
    public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
        System.out.println("index changed from " + oldValue + " to " + newValue);
    }
});

这篇关于JavaFX中的默认表模型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！