Question

我已尝试使用Id和Value Pair创建一个组合框代码。现在我想设置组合框的值与指定的Id传递。示例：我想设置组合框的值，其员工姓名的工资为1400.0

package demo;

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

/**
 *
 * @author vikassingh
 */
public class Demo extends Application {

    private final ObservableList<Employee> data
            = FXCollections.observableArrayList(
                    new Employee("Azamat", 2200.15),
                    new Employee("Veli", 1400.0),
                    new Employee("Nurbek", 900.5));

    @Override
    public void start(Stage primaryStage) {
        ComboBox<Employee> combobox = new ComboBox<>(data);

        // testing
        //combobox.getSelectionModel().selectFirst();
        //combobox.setValue(1400.0); // How to set value with specific Id Passed
        // End testing

        StackPane root = new StackPane();
        root.getChildren().add(combobox);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }

    public static class Employee {

        private String name;
        private Double salary;

        @Override
        public String toString() {
            return name;
        }

        public Employee(String name, Double salary) {
            this.name = name;
            this.salary = salary;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public Double getSalary() {
            return salary;
        }

        public void setSalary(Double salary) {
            this.salary = salary;
        }
    }

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

Answer 1

使用您用于任何其他overlay.setMap(map) / Employee的相同技术，可以在data列表中找到正确的Collection：迭代完成收集并找到符合标准的第一个元素。 Streams API提供了一种简单的方法：

List

如何使用给定Id值设置ComboBox的值？

1 个答案: