Question

我一直在绝望地试图想出这个，但我没有运气。我的想法是，当我输入信息并按“保存员工”按钮时，中心的表格应相应更新。我知道达到这个的方法让我相信我创建表和列表的方式有问题。

编辑过的miminal代码：

控制器：

package application;

import java.net.URL;
import java.util.ResourceBundle;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;

public class Controller implements Initializable {

    @FXML // fx:id="nameField"
    private TextField nameField;

    @FXML // fx:id="wageField"
    private TextField wageField;

    @FXML // fx:id="saveBtn"
    private Button saveBtn;

    @FXML // fx:id="nameColumn"
    private TableColumn<Employee, String> nameColumn;

    @FXML // fx:id="wageColumn"
    private TableColumn<Employee, Double> wageColumn;

    private TableView<Employee> employeeTable;

    ObservableList<Employee> employeeList = FXCollections.observableArrayList();

    @Override
    public void initialize(URL location, ResourceBundle resources) {

        nameColumn.setCellValueFactory(dataCell -> dataCell.getValue().nameProperty());
        wageColumn.setCellValueFactory(dataCell -> dataCell.getValue().wageProperty().asObject());


    }

    public void saveButtonClick() {

        Employee employee = new Employee();
        employee.setName(nameField.getText());
        employee.setWage(Double.parseDouble(wageField.getText()));

        employeeList.add(employee);

    }
}

员工：

package application;

import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;

public class Employee {

    private StringProperty name = new SimpleStringProperty(this, "name", "");

    public String getName() {
        return name.get();
    }

    public StringProperty nameProperty() {
        return name;
    }

    public void setName(String name) {
        this.name.set(name);
    }

    private DoubleProperty wage = new SimpleDoubleProperty(this, "wage", 0.0);

    public Double getWage() {
        return wage.get();
    }

    public DoubleProperty wageProperty() {
        return wage;
    }

    public void setWage(Double wage) {
        this.wage.set(wage);
    }

}

FXML：

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

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.VBox?>

<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.Controller">
   <center>
      <TableView prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER">
        <columns>
          <TableColumn fx:id="nameColumn" prefWidth="75.0" text="Name" />
          <TableColumn fx:id="wageColumn" prefWidth="75.0" text="Wage" />
        </columns>
      </TableView>
   </center>
   <left>
      <VBox prefHeight="200.0" prefWidth="100.0" BorderPane.alignment="CENTER">
         <children>
            <Label text="Add new Entry" />
            <TextField fx:id="nameField" promptText="name" />
            <TextField fx:id="wageField" promptText="wage" />
            <Button fx:id="saveBtn" mnemonicParsing="false" onAction="#saveButtonClick" text="save new entry" />
         </children>
      </VBox>
   </left>
</BorderPane>

主：

package application;

import javafx.application.Application;
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 primaryStage) throws Exception {

        Parent root = FXMLLoader.load(getClass().getResource("debug.fxml"));
        primaryStage.setTitle("Minimal Debug");
        primaryStage.setScene(new Scene(root, 1920, 1080));
        primaryStage.show();

    }

    public static void main(String[] args) {
        launch(args);
    }
}

由于

Answer 1

您需要将TableView注入控制器，就像使用其他控件一样。即。

// add @FXML annotation
@FXML
private TableView<Employee> employeeTable;

和

<!-- note fx:id attribute -->
<TableView fx:id="employeeTable" prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER">

然后您可以使用initialize()方法将数据设置为表格：

@Override
public void initialize(URL location, ResourceBundle resources) {

    nameColumn.setCellValueFactory(dataCell -> dataCell.getValue().nameProperty());
    wageColumn.setCellValueFactory(dataCell -> dataCell.getValue().wageProperty().asObject());

    employeeTable.setItems(employeeList);
}

无法添加到表JavaFXML

1 个答案: