/ / Tableview com linhas adicionadas dinamicamente está vazia - javafx

Tableview com linhas adicionadas dinamicamente está vazia - javafx

Este código deve mostrar uma tabela com valornela, as colunas e linhas são adicionadas dinamicamente, a idéia do programa é mostrar uma matriz em uma tableview ... enfim ele mostra linhas vazias, o que é a solução?

    private TableView MSTab;


float MS[][]=new float[n][n];

for (int s = 1; s < n+1; s++){
TableColumn a = new TableColumn(Integer.toString(s));

MSTab.getColumns().add(a);
}
ObservableList<String> row = FXCollections.observableArrayList();

for (int l=0;l<n;l++){
row.removeAll(row);
for (int s=0;s<n;s++){

row.add(Float.toString(MS[l][s]));

}

MSTab.getItems().add((ObservableList) row);

}

Respostas:

2 para resposta № 1

Há muito errado no código. Por favor, dê uma olhada no tutorial oficial.

SSCCE:

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;

public class TableViewSample extends Application {

private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data =
FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com"),
new Person("Ethan", "Williams", "ethan.williams@example.com"),
new Person("Emma", "Jones", "emma.jones@example.com"),
new Person("Michael", "Brown", "michael.brown@example.com")
);

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

@Override
public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Table View Sample");
stage.setWidth(450);
stage.setHeight(500);

final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));

table.setEditable(true);

TableColumn firstNameCol = new TableColumn("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("firstName"));

TableColumn lastNameCol = new TableColumn("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("lastName"));

TableColumn emailCol = new TableColumn("Email");
emailCol.setMinWidth(200);
emailCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("email"));

table.setItems(data);
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);

final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table);

((Group) scene.getRoot()).getChildren().addAll(vbox);

stage.setScene(scene);
stage.show();
}

public static class Person {

private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;

private Person(String fName, String lName, String email) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
}

public String getFirstName() {
return firstName.get();
}

public void setFirstName(String fName) {
firstName.set(fName);
}

public String getLastName() {
return lastName.get();
}

public void setLastName(String fName) {
lastName.set(fName);
}

public String getEmail() {
return email.get();
}

public void setEmail(String fName) {
email.set(fName);
}
}
}