在这个项目中,我无法在控制台输出中获取是否选择了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<Player> table = new TableView<Player>(); ObservableList<Player> data ; @Override public void start(Stage primaryStage) { final BorderPane root = new BorderPane(); table.setItems(createData()); final TableColumn<Player, String> firstNameColumn = new TableColumn<>("First Name"); final TableColumn<Player, String> lastNameColumn = new TableColumn<>("Last Name"); final TableColumn<Player, Boolean> injuredColumn = new TableColumn<>("Injured"); firstNameColumn.setCellValueFactory(new PropertyValueFactory<Player, String>("firstName")); lastNameColumn.setCellValueFactory(new PropertyValueFactory<Player, String>("lastName")); injuredColumn.setCellValueFactory(new PropertyValueFactory<Player, Boolean>("injured")); final Callback<TableColumn<Player, Boolean>, TableCell<Player, Boolean>> cellFactory = CheckBoxTableCell.forTableColumn(injuredColumn); injuredColumn.setCellFactory(new Callback<TableColumn<Player, Boolean>, TableCell<Player, Boolean>>() { @Override public TableCell<Player, Boolean> call(TableColumn<Player, Boolean> column) { TableCell<Player, Boolean> 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<Player,Boolean>>() { @Override public void handle(CellEditEvent<Player, Boolean> 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<ActionEvent>() { @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<ActionEvent>() { @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<Player> createData() { List<Player> 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.<Player>observableArrayList( new Callback<Player, Observable[]>() { @Override public Observable[] call(Player player) { return new Observable[]{player.injuredProperty()}; } } ); data.addAll(players); data.addListener(new ListChangeListener<Player>() { @Override public void onChanged( javafx.collections.ListChangeListener.Change<? extends Player> 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)":""); } } }
它给我的输出像
Selected row: Gareth Bale
但是它并不能告诉天气复选框是否处于选中状态:
public void onChanged
我需要这样的输出:
Selected row: Gareth Bale true
要么
Selected row: Gareth Bale false
在以下情况下尝试此操作:
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 ,仅当播放器受伤时才会显示输出,否则将为空白:
选定的行:Gareth Bale(受伤) 选定的行:Gareth Bale
选定的行:Gareth Bale(受伤)
选定的行:Gareth Bale
替换为:
选择的行:Gareth Bale true 选定的行:Gareth Bale错误
选择的行:Gareth Bale true
选定的行:Gareth Bale错误
您还必须在播放器类中更改此功能:
public String toString() { return firstName.get() + " " + lastName.get() + (injured.get()?" true":" false"); }