问题
I\'m new to JavaFX 8 and I am trying to feed a TableView with some data in the controller using the initialize method. I have seen a lot of topic on it, try a lot of stuff but it didn\'t work for me. I\'ve seen :
- How to populate TableView dynamically with FXML and JavaFX
- How to populate a TableView that is defined in an fxml file that is designed in JavaFx Scene Builder
- Javafx PropertyValueFactory not populating Tableview
and a lot more but none of the solutions happend to work for me.
Here is my code : class Employee
public class Employee extends Person{
private SimpleIntegerProperty salary;
private SimpleObjectProperty<Character> droit;
public Employee(){
super();
this.salary = new SimpleIntegerProperty();
this.droit = new SimpleObjectProperty<Character>();
}
public Employee(int id, String firstName, String lastName, String password, char droits, int salary) {
super(id,firstName,lastName,password);
this.salary = new SimpleIntegerProperty(salary);
this.droit = new SimpleObjectProperty<Character>(droits);
}
public Employee(String firstName, String lastName, String password, char droits, int salary) {
super(firstName,lastName,password);
this.salary = new SimpleIntegerProperty(salary);
this.droit = new SimpleObjectProperty<Character>(droits);
}
...
}
class Person
public class Person {
protected SimpleStringProperty firstName;
protected SimpleStringProperty lastName;
public Person(){
this.firstName = new SimpleStringProperty();
this.lastName = new SimpleStringProperty();
}
public Person(String firstName, String lastName){
this.firstName = new SimpleStringProperty(firstName);
this.lastName = new SimpleStringProperty(lastName);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String firstName) {
this.firstName.set(firstName);
}
public StringProperty firstNameProperty(){
return this.firstName;
}
public String getLastName() {
return this.lastName.get();
}
public void setLastName(String lastName) {
this.lastName.set(lastName);
}
public StringProperty lastNameProperty(){
return this.lastName;
}
Here is the FXML that defines the User Interface :
ConsultHR.fxml
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ButtonBar?>
<?import javafx.scene.control.DatePicker?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.StackPane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>
<VBox fx:id=\"ConsultHR\" maxHeight=\"600.0\" maxWidth=\"600.0\" minHeight=\"500.0\" minWidth=\"500.0\" prefHeight=\"550.0\" prefWidth=\"550.0\" xmlns=\"http://javafx.com/javafx/8.0.60\" xmlns:fx=\"http://javafx.com/fxml/1\" fx:controller=\"fr.kaf.app.controller.hr.ConsultHRController\">
<children>
<HBox maxHeight=\"450.0\" minHeight=\"450.0\" prefHeight=\"450.0\">
<children>
<TableView fx:id=\"table\" prefHeight=\"426.0\" prefWidth=\"288.0\">
<columns>
<TableColumn fx:id=\"lastNameCol\" prefWidth=\"131.0\" text=\"Nom\" />
<TableColumn fx:id=\"firstNameCol\" prefWidth=\"154.0\" text=\"Prénom\" />
</columns>
</TableView>
</HBox>
<ButtonBar prefHeight=\"40.0\" prefWidth=\"400.0\">
<buttons>
<Button mnemonicParsing=\"false\" onAction=\"#goHRAction\" text=\"Rssources Humaines\" />
</buttons>
<VBox.margin>
<Insets right=\"15.0\" />
</VBox.margin>
</ButtonBar>
</children>
</VBox>
And finally Here is the Controller : ** class ConsultHRController **
public class ConsultHRController extends DefaultController implements Initializable{
@FXML
VBox ConsultHR;
@FXML
public TableView<Employee> table;
@FXML
TableColumn<Employee,String> firstNameCol;
@FXML
TableColumn<Employee,String> lastNameCol;
DAO<Employee> dao;
SimpleListProperty<Employee> employees;
@Override
public void initialize(URL location, ResourceBundle resources){
super.initialize();
dao = (DAO<Employee>) dFact.getEmployeeDAO();
try {
employees = dao.findAll();
System.out.println(employees.get());
table =new TableView<Employee>(employees);
firstNameCol.setCellValueFactory(new PropertyValueFactory<Employee, String>(\"firstName\"));
lastNameCol.setCellValueFactory(new PropertyValueFactory<Employee, String>(\"lastName\"));
table.getColumns().setAll(firstNameCol, lastNameCol);
System.out.println(firstNameCol.getCellData(0));
} catch (SQLException e) {
// TODO Mettre une popup erreur base de données
e.printStackTrace();
}
}
public void goHRAction(ActionEvent e) throws IOException{
goSmwhereAction((Stage) ConsultHR.getScene().getWindow(),\"/fr/kaf/app/fxml/hr/HumanRessources.fxml\");
}
}
As you can see I have a \"System.out.println(firstNameCol.getCellData(0));\" in the initialize method. It results in giving me that the cell is not empty and it\'s filled in with the good data but I don\'t see anything in my UI.
回答1:
You replace your TableView in your initialize method.
table =new TableView<Employee>(employees);
You assign the data to the new TableView and leave the one created from the fxml empty.
Instead use the one injected by the FXMLLoader:
@Override
public void initialize(URL location, ResourceBundle resources){
super.initialize();
dao = (DAO<Employee>) dFact.getEmployeeDAO();
try {
employees = dao.findAll();
// set data for the table created by the FXMLLoader
table.setItems(employees);
// no need to add them to the table since the FXMLLoader is ready doing that
firstNameCol.setCellValueFactory(new PropertyValueFactory<>("firstName"));
lastNameCol.setCellValueFactory(new PropertyValueFactory<>("lastName"));
} catch (SQLException e) {
// TODO Mettre une popup erreur base de données
e.printStackTrace();
}
}
来源：https://stackoverflow.com/questions/40817165/javafx-8-populating-a-tableview-in-initialize-method