有没有办法在javafx中的特定行和列的tableview中插入数据

Question

我有5行3列的tableview。我希望在第1行和第1列填充数据。有一种方法可以添加数据。请向我展示示例代码。

Answer 1

您可以尝试以下方法。从表中获取项目列表并更新列表中的所需项目。样品如下。

public class FxTablePagination extends Application {

    TableView<Person> table = null;

    final ObservableList<Person> data = FXCollections.observableArrayList(
            new Person("1", "Joe", "Pesci"), new Person("2", "Audrey",
                    "Hepburn"), new Person("3", "Gregory", "Peck"), new Person(
                    "4", "Cary", "Grant"), new Person("5", "De", "Niro"),
            new Person("6", "Katharine", "Hepburn"), new Person("7", "Jack",
                    "Nicholson"), new Person("8", "Morgan", "Freeman"),
            new Person("9", "Elizabeth", "Taylor"), new Person("10",
                    "Marcello", "Mastroianni"), new Person("11", "Innokenty",
                    "Smoktunovsky"), new Person("12", "Sophia", "Loren"),
            new Person("13", "Alexander", "Kalyagin"), new Person("14",
                    "Peter", "OToole"), new Person("15", "Gene", "Wilder"),
            new Person("16", "Evgeny", "Evstegneev"), new Person("17",
                    "Michael", "Caine"), new Person("18", "Jean-Paul",
                    "Belmondo"), new Person("19", " Julia", "Roberts"),
            new Person("20", "James", "Stewart"), new Person("21", "Sandra",
                    "Bullock"), new Person("22", "Paul", "Newman"), new Person(
                    "23", "Oleg", "Tabakov"), new Person("24", "Mary",
                    "Steenburgen"), new Person("25", "Jackie", "Chan"),
            new Person("26", "Rodney", "Dangerfield"), new Person("27",
                    "Betty", "White"), new Person("28", "Eddie", "Murphy"),
            new Person("29", "Amitabh", "Bachchan"), new Person("30", "Nicole",
                    "Kidman"), new Person("31", "Adriano", "Celentano"),
            new Person("32", "Rhonda", " Fleming's"), new Person("32",
                    "Humphrey", "Bogart"));
    private Pagination pagination;

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

    public int itemsPerPage() {
        return 1;
    }

    public int rowsPerPage() {
        return 5;
    }

    public VBox createPage(int pageIndex) {
        int lastIndex = 0;
        int displace = data.size() % rowsPerPage();
        if (displace > 0) {
            lastIndex = data.size() / rowsPerPage();
        } else {
            lastIndex = data.size() / rowsPerPage() - 1;

        }

        VBox box = new VBox(5);
        int page = pageIndex * itemsPerPage();

        for (int i = page; i < page + itemsPerPage(); i++) {
            table = new TableView<Person>();
            TableColumn numCol = new TableColumn("ID");
            numCol.setCellValueFactory(new PropertyValueFactory<Person, String>(
                    "num"));

            numCol.setMinWidth(20);

            TableColumn firstNameCol = new TableColumn("First Name");
            firstNameCol
                    .setCellValueFactory(new PropertyValueFactory<Person, String>(
                            "firstName"));

            firstNameCol.setMinWidth(160);

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

            lastNameCol.setMinWidth(160);

            table.getColumns().addAll(numCol, firstNameCol, lastNameCol);
            if (lastIndex == pageIndex) {
                table.setItems(FXCollections.observableArrayList(data.subList(
                        pageIndex * rowsPerPage(), pageIndex * rowsPerPage()
                                + displace)));
            } else {
                table.setItems(FXCollections.observableArrayList(data.subList(
                        pageIndex * rowsPerPage(), pageIndex * rowsPerPage()
                                + rowsPerPage())));
            }

            box.getChildren().add(table);
        }
        return box;
    }

    @Override
    public void start(final Stage stage) throws Exception {

        pagination = new Pagination((data.size() / rowsPerPage() + 1), 0);
        // pagination = new Pagination(20 , 0);
        pagination.setStyle("-fx-border-color:red;");
        pagination.setPageFactory(new Callback<Integer, Node>() {
            @Override
            public Node call(Integer pageIndex) {
                if (pageIndex > data.size() / rowsPerPage() + 1) {
                    return null;
                } else {
                    return createPage(pageIndex);
                }
            }
        });

        Button modifyBtn = new Button("Modify");

        **// To update a column content or row content in the table view**
        modifyBtn.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent e) {
                try {
                    ObservableList<Person> columns = table.getItems();
                    Person item = columns.get(0);
                    item.setFirstName("Name modified");
                    columns.add(0, item);
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
        });

        AnchorPane anchor = new AnchorPane();
        AnchorPane.setTopAnchor(pagination, 30.0);
        AnchorPane.setRightAnchor(pagination, 10.0);
        AnchorPane.setBottomAnchor(pagination, 10.0);
        AnchorPane.setLeftAnchor(pagination, 10.0);
        anchor.getChildren().addAll(pagination, modifyBtn);
        Scene scene = new Scene(anchor, 400, 250);
        stage.setScene(scene);
        stage.setTitle("Table pager");
        stage.show();
    }

    public static class Person {

        private final SimpleStringProperty num;
        private final SimpleStringProperty firstName;
        private final SimpleStringProperty lastName;

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

        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 getNum() {
            return num.get();
        }

        public void setNum(String id) {
            num.set(id);
        }
    }
}