尝试使Tableview Clickable时出现JavaFX错误

我正在尝试使tableview可点击，它将返回单击的单元格中的文本。 尝试在Netbeans中编译时，我收到两个错误。 所有代码都来自“示例12-11：单元格编辑的替代解决方案” 官方tableview教程和此stackoverflow.com回答 。 以下是错误：

1. 类型参数MouseEvent不在类型变量的范围内T cell.addEventFilter（MouseEvent.MOUSE_CLICKED，new EventHandler（）{其中T是类型变量：T扩展在接口EventHandler中声明的事件
2. 类Node中的方法addEventFilter不能应用于给定的类型; cell.addEventFilter（MouseEvent.MOUSE_CLICKED，new EventHandler（）{必需：EventType，EventHandler found：int，> reason：没有类型变量的实例（s）T存在，以便参数类型int符合forms参数类型EventType where T是一个类型变量：T extends在方法addEventFilter（EventType，EventHandler）中声明的事件

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import java.awt.event.MouseEvent; import javafx.application.Application; import javafx.beans.property.SimpleStringProperty; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.collections.FXCollections; import javafx.collections.ObservableList; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.geometry.Insets; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.TableCell; import javafx.scene.control.TableColumn; import javafx.scene.control.TableColumn.CellEditEvent; import javafx.scene.control.TableView; import javafx.scene.control.TextField; import javafx.scene.control.cell.PropertyValueFactory; import javafx.scene.layout.HBox; import javafx.scene.layout.VBox; import javafx.scene.text.Font; import javafx.stage.Stage; import javafx.util.Callback; public class TableViewSample extends Application { private TableView table = new TableView(); private final ObservableList data = FXCollections.observableArrayList( new Person("Jacob", "Smith", "[e-mail]"), new Person("Isabella", "Johnson", "[e-mail]"), new Person("Ethan", "Williams", "[e-mail]"), new Person("Emma", "Jones", "[e-mail]"), new Person("Michael", "Brown", "[e-mail]")); final HBox hb = new HBox(); 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(550); final Label label = new Label("Address Book"); label.setFont(new Font("Arial", 20)); table.setEditable(false); Callback cellFactory = new Callback() { public TableCell call(TableColumn p) { TableCell cell = new TableCell() { @Override public void updateItem(String item, boolean empty) { super.updateItem(item, empty); setText(empty ? null : getString()); setGraphic(null); } private String getString() { return getItem() == null ? "" : getItem().toString(); } }; cell.addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler() { @Override public void handle(MouseEvent event) { if (event.getClickCount() > 1) { System.out.println("double clicked!"); TableCell c = (TableCell) event.getSource(); System.out.println("Cell text: " + c.getText()); } } }); return cell; } }; TableColumn firstNameCol = new TableColumn("First Name"); firstNameCol.setMinWidth(100); firstNameCol.setCellValueFactory( new PropertyValueFactory("firstName")); firstNameCol.setCellFactory(cellFactory); firstNameCol.setOnEditCommit( new EventHandler<CellEditEvent>() { @Override public void handle(CellEditEvent t) { ((Person) t.getTableView().getItems().get( t.getTablePosition().getRow()) ).setFirstName(t.getNewValue()); } } ); TableColumn lastNameCol = new TableColumn("Last Name"); lastNameCol.setMinWidth(100); lastNameCol.setCellValueFactory( new PropertyValueFactory("lastName")); lastNameCol.setCellFactory(cellFactory); lastNameCol.setOnEditCommit( new EventHandler<CellEditEvent>() { @Override public void handle(CellEditEvent t) { ((Person) t.getTableView().getItems().get( t.getTablePosition().getRow()) ).setLastName(t.getNewValue()); } } ); TableColumn emailCol = new TableColumn("Email"); emailCol.setMinWidth(200); emailCol.setCellValueFactory( new PropertyValueFactory("email")); emailCol.setCellFactory(cellFactory); emailCol.setOnEditCommit( new EventHandler<CellEditEvent>() { @Override public void handle(CellEditEvent t) { ((Person) t.getTableView().getItems().get( t.getTablePosition().getRow()) ).setEmail(t.getNewValue()); } } ); table.setItems(data); table.getColumns().addAll(firstNameCol, lastNameCol, emailCol); final TextField addFirstName = new TextField(); addFirstName.setPromptText("First Name"); addFirstName.setMaxWidth(firstNameCol.getPrefWidth()); final TextField addLastName = new TextField(); addLastName.setMaxWidth(lastNameCol.getPrefWidth()); addLastName.setPromptText("Last Name"); final TextField addEmail = new TextField(); addEmail.setMaxWidth(emailCol.getPrefWidth()); addEmail.setPromptText("Email"); final Button addButton = new Button("Add"); addButton.setOnAction(new EventHandler() { @Override public void handle(ActionEvent e) { data.add(new Person( addFirstName.getText(), addLastName.getText(), addEmail.getText())); addFirstName.clear(); addLastName.clear(); addEmail.clear(); } }); hb.getChildren().addAll(addFirstName, addLastName, addEmail, addButton); hb.setSpacing(3); final VBox vbox = new VBox(); vbox.setSpacing(5); vbox.setPadding(new Insets(10, 0, 0, 10)); vbox.getChildren().addAll(label, table, hb); ((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); } } class EditingCell extends TableCell { private TextField textField; public EditingCell() { } @Override public void startEdit() { if (!isEmpty()) { super.startEdit(); createTextField(); setText(null); setGraphic(textField); textField.selectAll(); } } @Override public void cancelEdit() { super.cancelEdit(); setText((String) getItem()); setGraphic(null); } @Override public void updateItem(String item, boolean empty) { super.updateItem(item, empty); if (empty) { setText(null); setGraphic(null); } else { if (isEditing()) { if (textField != null) { textField.setText(getString()); } setText(null); setGraphic(textField); } else { setText(getString()); setGraphic(null); } } } private void createTextField() { textField = new TextField(getString()); textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2); textField.focusedProperty().addListener(new ChangeListener(){ @Override public void changed(ObservableValue arg0, Boolean arg1, Boolean arg2) { if (!arg2) { commitEdit(textField.getText()); } } }); } private String getString() { return getItem() == null ? "" : getItem(); } } } 

Answer 1

您有错误的MouseEvent导入。 你需要javafx.scene.input.MouseEvent ，而不是AWT版本。

Answer 2

当IDE提示您导入MouseEvent时，第一个选项可能是java.awt.event.MouseEvent，而不是javafx.scene.input.MouseEvent。

使用JavaFX导入时要小心，因为它的许多类与标准Java库中的类具有相同的名称。