JavaFX TableView edit not editing

问题

In JavaFX 8 I'm trying to get a cell to edit after a new row has been added to the table, to optimize the experience for the user.

    hourTableView.getSelectionModel().select(newHour);
    int row = hourTableView.getSelectionModel().getSelectedIndex();
    hourTableView.edit(row, hourTableAmountTableColumn);

The correct row is selected, but the cell does not go into edit mode. Well, I have seen it happen very incidentally, but hardly reproducable. What am I doing wrong?

回答1:

found the solution in Insert row in JavaFX TableView and start editing is not working correctly

you need to call hourTableView.layout() before calling hourTableView.edit(). It gets more complicated when the new row is not visible, I found that hourTableView.scrollTo() helps if it is called before hourTableView.layout().

回答2:

The table behaves strange if you want to start editing on a just inserted row. I could start editing any row without problem. But the newly added row wasn't working like expected. I delayed the edit call with a thread, then it worked... See the following example code:

import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class jfxtest extends Application {

    private ObservableList<Person> data;
    private TableView<Person> tableView;
    private TableColumn<Person, String> firstNameCol;

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        Button addButton = new Button("add new row");
        addButton.setOnMouseClicked(event -> addRow());
        VBox vbox = new VBox(addButton, createContent());
        primaryStage.setScene(new Scene(vbox));
        primaryStage.show();
    }

    private void addRow() {
        data.add(new Person("peter", "parker", "spiderman@aol.com"));
        new Thread(() -> {
            try {
                Thread.sleep(50);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            Platform.runLater(() -> {
                int row = data.size() - 1;
                tableView.getSelectionModel().select(row);
                tableView.getSelectionModel().focus(row);
                tableView.edit(row, firstNameCol);
            });
        }).start();
    }

    private TableView createContent() {
        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")
        );
        firstNameCol = new TableColumn<>("First");
        firstNameCol.setCellValueFactory(new PropertyValueFactory<>("firstName"));
        firstNameCol.setEditable(true);
        firstNameCol.setCellFactory(TextFieldTableCell.forTableColumn());
        firstNameCol.setOnEditCommit(
            t -> t.getTableView().getItems().get(
                t.getTablePosition().getRow()).firstNameProperty().setValue(t.getNewValue())
        );

        TableColumn<Person, String> lastNameCol = new TableColumn<>("Last");
        lastNameCol.setCellValueFactory(new PropertyValueFactory<>("lastName"));

        TableColumn<Person, String> emailCol = new TableColumn<>("Email");
        emailCol.setCellValueFactory(new PropertyValueFactory<>("email"));

        tableView = new TableView<>();
        tableView.setEditable(true);
        tableView.setItems(data);
        tableView.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
        return tableView;
    }


    public class Person {
        private StringProperty firstName;
        private StringProperty lastName;
        private StringProperty email;

        Person(String fName, String lName, String email) {
            this.firstName = new SimpleStringProperty(fName);
            this.lastName = new SimpleStringProperty(lName);
            this.email = new SimpleStringProperty(email);
        }

        public StringProperty firstNameProperty() {
            return firstName;
        }

        public StringProperty lastNameProperty() {
            return lastName;
        }

        public StringProperty emailProperty() {
            return email;
        }
    }
}

来源：https://stackoverflow.com/questions/44484813/javafx-tableview-edit-not-editing