[英]Property bindings in JavaFX TableView are not working
我跟蹤了許多鏈接,找到了一種在表格視圖中顯示復選框的解決方案。 但是我無法在表視圖中更改復選框的值。
我遵循的鏈接: 如何在JavaFX中將CheckBox添加到TableView
型號類別:
public class TUser {
private SimpleStringProperty name;
private SimpleStringProperty address;
private SimpleBooleanProperty active;
public TUser(String name, String address, boolean active) {
this.name = new SimpleStringProperty(name);
this.address = new SimpleStringProperty(address);
this.active = new SimpleBooleanProperty(active);
}
public String getName() {
return name.get();
}
public void setName(String name) {
this.name = new SimpleStringProperty(name);
}
public String getAddress() {
return address.get();
}
public void setAddress(String address) {
this.address = new SimpleStringProperty(address);
}
public boolean getActive() {
return active.get();
}
public void setActive(boolean active) {
this.active = new SimpleBooleanProperty(active);
}
}
FXML文件:
<TableView fx:id="usertable" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="500.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<columns>
<TableColumn fx:id="name" prefWidth="142.0" text="Name" />
<TableColumn fx:id="address" prefWidth="147.0" text="Address" />
<TableColumn fx:id="active" prefWidth="153.0" text="Active" />
</columns>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
控制器類別:
public class UserManagement extends AnchorPane {
@FXML
private TableView<TUser> usertable;
@FXML
private TableColumn<TUser, String> address;
@FXML
private TableColumn<TUser, String> name;
@FXML
private TableColumn<TUser, Boolean> active;
public UserManagement() throws IOException {
initGraphics();
initTable();
}
private class CheckBoxCellFactory<S, T> implements Callback<TableColumn<S, T>, TableCell<S, T>> {
@Override public TableCell<S, T> call(TableColumn<S, T> p) {
return new CheckBoxTableCell<>();
}
}
private void initGraphics() throws IOException {
FXMLLoader content = new FXMLLoader(getClass().getResource("/mypack/fxmls/UserManagement.fxml"));
content.setController(this);
Node contentnode = (Node) content.load();
AnchorPane.setBottomAnchor(contentnode, 0.0);
AnchorPane.setLeftAnchor(contentnode, 0.0);
AnchorPane.setRightAnchor(contentnode, 0.0);
AnchorPane.setTopAnchor(contentnode, 0.0);
getChildren().add(contentnode);
active.setCellFactory(new CheckBoxCellFactory<TUser, Boolean>());
address.setCellValueFactory(new PropertyValueFactory<TUser, String>("address"));
name.setCellValueFactory(new PropertyValueFactory<TUser, String>("name"));
active.setCellValueFactory(new PropertyValueFactory<TUser, Boolean>("active"));
}
private void initTable(){
ObservableList<TUser> data = FXCollections.observableArrayList(new TUser("ABC", "ABC Road", true));
usertable.setItems(data);
}
}
輸出:
為了使復選框正確綁定到模型類中的屬性,您需要定義一個屬性訪問器方法:
public class TUser {
// other methods and fields as before....
public BooleanProperty activeProperty() {
return active ;
}
}
同樣,為您的其他屬性定義類似方法也是一個好主意。
請注意,您的表格不可編輯,因此用戶無法操作復選框。 如果希望它們可編輯,則使TableView
可編輯:
<TableView fx:id="usertable" editable="true" ...>
TableColumn
默認情況下是可編輯的。
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