我正在尝试将列添加到表格视图中:
@FXML
private TableView tblView;
//private Label tblViewTitle;
@FXML
public void showTable(ActionEvent e) throws Exception{
Stage TableView = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("tableView.fxml"));
TableView.setTitle("Table");
TableView.setScene(new Scene(root));
//tblViewTitle.setText("test");
//For dynamic calculate later on
TableColumn clm1 = new TableColumn("Test");
TableColumn clm2 = new TableColumn("Test");
TableColumn clm3 = new TableColumn("Test");
TableColumn clm4 = new TableColumn("Test");
tblView.getColumns().addAll(clm1, clm2, clm3, clm4);
TableView.show();
}
fxml文件如下所示:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.101" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<TableView fx:id="tblView" editable="true" layoutX="84.0" layoutY="94.0" prefHeight="306.0" prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="94.0" />
<Label fx:id="tblViewTitle" layoutX="14.0" layoutY="26.0" prefHeight="49.0" prefWidth="181.0">
<font>
<Font size="39.0" />
</font>
</Label>
</children>
</AnchorPane>
当我尝试将列添加到表视图中时,我得到一个nullPointerException,我不明白为什么。
我是否因为表视图不是对象而无法添加列?