在表格中显示属性

时间:2018-10-15 01:09:11

标签: java javafx properties tableview

我必须在javafx中填充一个2列表,我想知道这样做的最佳方法是什么?

基本上我有这堂课

public class Name {

    private String _name;
    private Rating _rating;

    public Name(String name , Rating rating) {
        _name = name;
        _rating = Rating.NO_RATING;
    }

    public String getName() {
        return _name;
    }

    public Rating getRating() {
        return _rating;
    }
}

我想在javafx中填充一个表,以使一列具有名称,而一列具有评级。我已经尝试通过名称类填充并使用getName()getRating()方法填充,但这不起作用。我在网上搜索了一个名为“属性”的东西,但是由于我没有任何属性,在这种情况下如何使用属性?

1 个答案:

答案 0 :(得分:1)

在数据模型中,使用属性扭曲要在表中显示的属性:

//data model 
public class Name {

    private SimpleStringProperty name;
    private SimpleIntegerProperty rating;

    public Name(String name , int rating) {
        this.name = new SimpleStringProperty(name);
        this.rating = new SimpleIntegerProperty(rating);
    }

    public String getName() {
        return name.get();
    }

    public int getRating() {
        return rating.get();
    }
}

并在表格列中使用这些属性

import javafx.application.Application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;

public class TableViewDemo extends Application {

    private final ObservableList<Name> data =
            FXCollections.observableArrayList(
                    new Name("Jacob", 12),
                    new Name("Isabella", 14),
                    new Name("Ethan", 5),
                    new Name("Emma", 17),
                    new Name("Michael",9));

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

    @Override
    public void start(Stage stage) {

        stage.setTitle("Table View Sample");

        TableColumn<Name, String> nameCol = new TableColumn<>("Name");
        nameCol.setMinWidth(100);
        nameCol.setCellValueFactory(new PropertyValueFactory<>("name"));

        TableColumn<Name, Integer> ratingCol =  new TableColumn<>("Rating");
        ratingCol.setMinWidth(100);
        ratingCol.setCellValueFactory(new PropertyValueFactory<Name, Integer>("rating"));
        final TableView<Name> table = new TableView<>();
        table.setItems(data);
        table.getColumns().addAll(nameCol, ratingCol);

        Scene scene = new Scene(table);
        stage.setScene(scene);
        stage.show();
    }
}


编辑以回应 kleopatra's comment

您还可以将属性用作单元格值工厂。将数据模型更改为:

public class Name {

    private SimpleStringProperty name;
    private SimpleIntegerProperty rating;

    public Name(String name , int rating) {
        this.name = new SimpleStringProperty(name);
        this.rating = new SimpleIntegerProperty(rating);
    }

    public SimpleStringProperty nameProperty() { return name ; }

    public SimpleIntegerProperty ratingProperty() { return rating; }
}

并通过以下方式定义列:

    TableColumn<Name, String> nameCol = new TableColumn<>("Name");
    nameCol.setCellValueFactory(cellData -> cellData.getValue().nameProperty());
    nameCol.setMinWidth(100);

    TableColumn<Name, String> ratingCol =   new TableColumn<>("Rating");
    ratingCol.setCellValueFactory(cellData -> cellData.getValue().ratingProperty().asString());