JavaFX TableView doesn't show the content
I'm trying to insert some values in a TableView, but it doesn't display the text in the columns, even though they're not empty because there are three rows (the same number of items I inserted in the TableView) which are clickable.
I have the class "ClientiController" which is the controller of the fxml file, and these are the declaration of the TableView and the columns of the tableView.
@FXML // fx:id="clientitable"
private TableView clientitable; // Value injected by FXMLLoader
@FXML // fx:id="nome"
private TableColumn nome; // Value injected by FXMLLoader
@FXML // fx:id="id"
private TableColumn id; // Value injected by FXMLLoader
@FXML // fx:id="telefono"
private TableColumn telefono; // Value injected by FXMLLoader
I call on the initialize() method a function, called loadTable() that adds the content to the TableView.
loadTable is in the same class "ClientiController" and this is its implementation:
@FXML
void loadTable()
{
//Cliente
try {
List<String> clienti = (List<String>) fc.processRequest("ReadClienti");
ObservableList<String> clienteData = FXCollections.observableArrayList(clienti);
id.setCellValueFactory(new PropertyValueFactory<Cliente, String>("id"));
nome.setCellValueFactory(new PropertyValueFactory<Cliente, String>("nome"));
cognome.setCellValueFactory(new PropertyValueFactory<Cliente, String>("cognome"));
telefono.setCellValueFactory(new PropertyValueFactory<Cliente, String>("n_tel"));
System.out.println(clienteData);
clientitable.setItems(clienteData);
} catch (SecurityException | NoSuchMethodException
| ClassNotFoundException | InstantiationException
| IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
In the class Cliente I have these strings:
private String id, nome, cognome, n_tel;
And the get and set functions for each String element, which take the values from the Database. In this Class I also have the readAll method ( ReadClienti ). In List<Cliente> clienti in the function loadTable() there is the result of the readAll method, and the function returns an ArrayList<ArrayList<String>> type.
If I select the first raw (even if I cannot see the text inside the columns) and then print it like this,
ArrayList<String> person = (ArrayList<String>) clientitable.getSelectionModel().getSelectedItem();
System.out.println(person);
it all works fine and it prints the value I inserted as first, so I know the values are actually in that table.
I also tried to change the private String strings in this class into SimpleStringProperty like I saw in other discussions in here but nothing changed.
How can I make the tableView display its content?
Edit: I think the problem is in the assignment
List<String> clienti = (List<String>) fc.processRequest("ReadClienti");
in the first raw of loadTable(), because I cannot cast a type ArrayList<ArrayList<String>> into a List<String> . But the ObservableList<String> in which I have to put the values to populate the ListView only gets Lists or simple ArrayLists as input. How can I transform my ArrayList<ArrayList<String>> variable to match the ObservableList type?