【发布时间】：2021-10-28 07:50:40
【问题描述】：
我最近想将CheckBox 列添加到现有的TableView。为了孤立地研究这个问题，我从Example 13-6 Creating a Table and Adding Data to It 开始。我添加了BooleanProperty 和Person 模型类的访问器，并添加了一个新的TableColumn 和CheckBoxTableCell 作为单元工厂。如图所示，我在每一行看到一个CheckBox。虽然所有值都是true，但没有一个被检查；复选框是实时的，但永远不会调用 setActive()。最近关于这个主题的questions 表明我遗漏了一些东西；我欢迎任何见解。
import javafx.application.Application;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.CheckBoxTableCell;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
/**
* Example 13-6 Creating a Table and Adding Data to It
* https://docs.oracle.com/javase/8/javafx/user-interface-tutorial/table-view.htm#CJAGAAEE
*/
public class TableViewSample extends Application {
private final TableView<Person> table = new TableView<>();
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) {
stage.setTitle("Table View Sample");
stage.setWidth(600);
stage.setHeight(400);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
table.setEditable(true);
TableColumn<Person, Boolean> active = new TableColumn<>("Active");
active.setCellValueFactory(new PropertyValueFactory<>("active"));
active.setCellFactory(CheckBoxTableCell.forTableColumn(active));
TableColumn<Person, String> firstName = new TableColumn<>("First Name");
firstName.setCellValueFactory(new PropertyValueFactory<>("firstName"));
TableColumn<Person, String> lastName = new TableColumn<>("Last Name");
lastName.setCellValueFactory(new PropertyValueFactory<>("lastName"));
TableColumn<Person, String> email = new TableColumn<>("Email");
email.setCellValueFactory(new PropertyValueFactory<>("email"));
table.setItems(data);
table.getColumns().addAll(active, firstName, lastName, email);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(8));
vbox.getChildren().addAll(label, table);
stage.setScene(new Scene(vbox));
stage.show();
}
public static class Person {
private final BooleanProperty active;
private final StringProperty firstName;
private final StringProperty lastName;
private final StringProperty email;
private Person(String fName, String lName, String email) {
this.active = new SimpleBooleanProperty(true);
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
}
public boolean getActive() {
return active.get();
}
public void setActive(boolean b) {
active.set(b);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String s) {
firstName.set(s);
}
public String getLastName() {
return lastName.get();
}
public void setLastName(String s) {
lastName.set(s);
}
public String getEmail() {
return email.get();
}
public void setEmail(String s) {
email.set(s);
}
}
}
【问题讨论】：
标签： javafx checkbox properties boolean tableview