public void exitGame() { //pop up dialogue
Platform.exit();
}
我尝试了很多在互联网上看到的不同方法,但是我无法让任何东西正常工作。我只需要一个简单的对话框,在菜单中点击“退出”按钮时弹出,并询问“您确定要退出吗?”并提供一个有效的“是的,我确定”和“取消”按钮。
这里是JavaFX对话框的示例。在JavaFX 2.x中没有对话框API,因此您需要创建自己的舞台并在其中创建组件。
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Modality;
import javafx.stage.Stage;
/**
* @author JayaPrasad
*
*/
public class SampleDialog extends Application {
/*
* (non-Javadoc)
*
* @see javafx.application.Application#start(javafx.stage.Stage)
*/
@Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setTitle("JavaFx Dialog");
Button btn = new Button();
btn.setText("Click me to display popup dialog");
btn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
final Stage dialogStage = new Stage();
dialogStage.initModality(Modality.WINDOW_MODAL);
Label exitLabel = new Label("Are you sure you want to exit?");
exitLabel.setAlignment(Pos.BASELINE_CENTER);
Button yesBtn = new Button("Yes");
yesBtn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
dialogStage.close();
}
});
Button noBtn = new Button("No");
noBtn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
dialogStage.close();
}
});
HBox hBox = new HBox();
hBox.setAlignment(Pos.BASELINE_CENTER);
hBox.setSpacing(40.0);
hBox.getChildren().addAll(yesBtn, noBtn);
VBox vBox = new VBox();
vBox.setSpacing(40.0);
vBox.getChildren().addAll(exitLabel, hBox);
dialogStage.setScene(new Scene(vBox));
dialogStage.show();
}
});
StackPane root = new StackPane();
root.getChildren().add(btn);
primaryStage.setScene(new Scene(root, 300, 250));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
匿名函数也很好用:
yesBtn.setOnAction (e -> dialogStage.close ());
noBtn.setOnAction (e -> dialogStage.close ());
dialogStage.initModality (Modality.APPLICATION_MODAL);