如何在 JavaFX 中创建一个 ChoiceDialog?
ChoiceDialog 是一个对话框,用于显示你可以从中选择一个的选项列表。你可以通过实例化javafx.scene.control.ChoiceDialog 类来创建一个选择对话框。
示例
以下示例演示了如何创建 **ChoiceDialog**。
import javafx.application.Application; import javafx.collections.ObservableList; import javafx.geometry.Insets; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.ChoiceDialog; import javafx.scene.layout.HBox; import javafx.scene.text.Font; import javafx.scene.text.FontPosture; import javafx.scene.text.FontWeight; import javafx.scene.text.Text; import javafx.stage.Stage; public class ChoiceDialogExample extends Application { public void start(Stage stage) { //Creating a choice box ChoiceDialog<String> choiceDialog = new ChoiceDialog<String>("English"); //Retrieving the observable list ObservableList<String> list = choiceDialog.getItems(); //Adding items to the list list.add("English"); list.add("Hindi"); list.add("Telugu"); list.add("Tamil"); //Setting the display text Text txt = new Text("Click the button to show the choice dialog"); Font font = Font.font("verdana", FontWeight.BOLD, FontPosture.REGULAR, 12); txt.setFont(font); //Creating a button Button button = new Button("Show Dialog"); //Showing the choice dialog on clicking the button button.setOnAction(e -> { choiceDialog.showAndWait(); }); //Adding the choice box to the group HBox layout = new HBox(25); layout.getChildren().addAll(txt, button); layout.setPadding(new Insets(15, 50, 50, 50)); layout.setStyle("-fx-background-color: BEIGE"); //Setting the stage Scene scene = new Scene(layout, 595, 300); stage.setTitle("Choice Dialog"); stage.setScene(scene); stage.show(); } public static void main(String args[]){ launch(args); } }
输出
广告