javafx如何使用复选框在表视图中获取选定的行数据

在这个项目中，我无法确定是否在控制台输出中选中了Checkbox数据。

我的代码：

import java.util.Arrays; import java.util.Iterator; import java.util.List; import javafx.application.Application; import javafx.beans.Observable; import javafx.beans.property.BooleanProperty; import javafx.beans.property.SimpleBooleanProperty; import javafx.beans.property.SimpleStringProperty; import javafx.beans.property.StringProperty; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.collections.FXCollections; import javafx.collections.ListChangeListener; import javafx.collections.ObservableList; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.geometry.Pos; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.TableCell; import javafx.scene.control.TableColumn; import javafx.scene.control.TableColumn.CellEditEvent; import javafx.scene.control.TablePosition; import javafx.scene.control.TableView; import javafx.scene.control.cell.CheckBoxTableCell; import javafx.scene.control.cell.PropertyValueFactory; import javafx.scene.layout.BorderPane; import javafx.stage.Stage; import javafx.util.Callback; public class TableWithCheckbox extends Application { final TableView table = new TableView(); ObservableList data ; @Override public void start(Stage primaryStage) { final BorderPane root = new BorderPane(); table.setItems(createData()); final TableColumn firstNameColumn = new TableColumn("First Name"); final TableColumn lastNameColumn = new TableColumn("Last Name"); final TableColumn injuredColumn = new TableColumn("Injured"); firstNameColumn.setCellValueFactory(new PropertyValueFactory("firstName")); lastNameColumn.setCellValueFactory(new PropertyValueFactory("lastName")); injuredColumn.setCellValueFactory(new PropertyValueFactory("injured")); final Callback<TableColumn, TableCell> cellFactory = CheckBoxTableCell.forTableColumn(injuredColumn); injuredColumn.setCellFactory(new Callback<TableColumn, TableCell>() { @Override public TableCell call(TableColumn column) { TableCell cell = cellFactory.call(column); cell.setAlignment(Pos.CENTER); return cell ; } }); injuredColumn.setCellFactory(cellFactory); injuredColumn.setEditable(true); // This appears not to get invoked: injuredColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent>() { @Override public void handle(CellEditEvent event) { System.out.println("Edit commit"); } }); table.setEditable(true); table.getColumns().addAll(firstNameColumn, lastNameColumn, injuredColumn); root.setCenter(table); Button button = new Button("Dump info"); button.setOnAction(new EventHandler() { @Override public void handle(ActionEvent event) { for (Player p : table.getItems()) { System.out.println(p); } System.out.println(); } }); Button button1 = new Button("add"); button1.setOnAction(new EventHandler() { @Override public void handle(ActionEvent event) { data.add(new Player("hbghj", "hjhbbccc77", true)); } }); root.setBottom(button); root.setTop(button1); primaryStage.setScene(new Scene(root, 400, 600)); primaryStage.show(); } public static void main(String[] args) { launch(args); } private ObservableList createData() { List players = Arrays.asList( new Player("Hugo" ,"Lloris", false), new Player("Brad", "Friedel", false), new Player("Kyle", "Naughton", false), new Player("Younes", "Kaboul", true), new Player("Benoit", "Assou-Ekotto", false), new Player("Jan", "Vertonghen", false), new Player("Michael", "Dawson", false), new Player("William", "Gallas", true), new Player("Kyle", "Walker", false), new Player("Scott", "Parker", false), new Player("Mousa", "Dembele", false), new Player("Sandro", "Cordeiro", true), new Player("Tom", "Huddlestone", false), new Player("Gylfi","Sigurdsson", false), new Player("Gareth", "Bale", false), new Player("Aaron", "Lennon", false), new Player("Jermane", "Defoe", false), new Player("Emmanuel", "Adebayor", true) ); data = FXCollections.observableArrayList( new Callback() { @Override public Observable[] call(Player player) { return new Observable[]{player.injuredProperty()}; } } ); data.addAll(players); data.addListener(new ListChangeListener() { @Override public void onChanged( javafx.collections.ListChangeListener.Change change) { System.out.println("List changed"); while (change.next()) { if (change.wasUpdated()) { System.out.println("What code a do here"); System.out.println(); } } } }); table.getSelectionModel().selectedItemProperty().addListener(new ChangeListener() { @Override public void changed(ObservableValue observableValue, Object oldValue, Object newValue) { //Check whether item is selected and set value of selected item to Label if (table.getSelectionModel().getSelectedItem() != null) { TableView.TableViewSelectionModel selectionModel = table.getSelectionModel(); ObservableList selectedCells = selectionModel.getSelectedCells(); TablePosition tablePosition = (TablePosition) selectedCells.get(0); Object val = tablePosition.getTableColumn().getCellData(newValue); System.out.println("Selected Value " + val); System.out.println("Selected row " + newValue); } } }); return data ; } public static class Player { private final StringProperty firstName ; private final StringProperty lastName ; private final BooleanProperty injured ; Player(String firstName, String lastName, boolean international) { this.firstName = new SimpleStringProperty(this, "firstName", firstName); this.lastName = new SimpleStringProperty(this, "lastName", lastName); this.injured = new SimpleBooleanProperty(this, "injured", international); } public String getFirstName() { return firstName.get(); } public void setFirstName(String firstName) { this.firstName.set(firstName);} public StringProperty firstNameProperty() { return firstName ; } public String getLastName() { return lastName.get(); } public void setLastName(String lastName) { this.lastName.set(lastName); } public StringProperty lastNameProperty() { return lastName ; } public boolean isInjuredl() { return injured.get(); } public void setInjured(boolean international) { this.injured.set(international); } public BooleanProperty injuredProperty() { return injured ; } @Override public String toString() { return firstName.get() + " " + lastName.get() + (injured.get()?" (injured)":""); } } } 

它给我输出像

 Selected row: Gareth Bale 

但它没有告诉天气Checkbox是否在function上被选中：

 public void onChanged 

我需要一个输出，如：

  Selected row: Gareth Bale true 

要么

  Selected row: Gareth Bale false 

Answer 1

试试这个：

  if (change.wasUpdated()) { String inj = (data.get(change.getFrom()).injured.getValue())?"injuried":"no longer injuried"; System.out.println(data.get(change.getFrom()).lastName.getValue() + ", " + data.get(change.getFrom()).firstName.getValue() + " " + "changed his status to " + inj); System.out.println(); } 

请注意 ，只有在玩家受到伤害时才会显示输出，否则它将为空白：

选定排：Gareth Bale（受伤）

选定行：Gareth Bale

将其替换为：

选定行：Gareth Bale真实

选定行：Gareth Bale假

您还必须在播放器类中更改此function：

 public String toString() { return firstName.get() + " " + lastName.get() + (injured.get()?" true":" false"); }