JavaFX 참고 사항

스타터 템플릿

//MainWindow.java
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class MainWindow extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("main.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root, 500, 420));
        primaryStage.show();
    }


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

//MainController.java
public class MainController implements Initializable {
    @FXML
    private Label label1;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
    }
}

fx:controller="MainController"

데이터 상호 작용

public class MainWindow extends Application{
    @Override
    public void start(Stage primaryStage) throws Exception { 
        //必须采用动态创建root的方式
        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("main.fxml"));
        Parent root = fxmlLoader.load();
        //获取Controller对象
        MainController controller = fxmlLoader.getController();
        //调用controller的方法        
        controller.function();
    }
}

public class MainController implements Initializable {
    @FXML
    private FlowPane rootLayout; //此处的类型为fxml布局的根元素的类型

    private Stage getStage() {
        //获取stage的方式
        Stage stage = (Stage) rootLayout.getScene().getWindow();
        return stage;
    }
}

이상적인 사용자 정의 하위 양식 작성 방법

public class SubWindow extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("sub.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root, 500, 420));
        primaryStage.show();
    }
    public SubWindow(){
        Stage stage = new Stage();
        stage.initModality(Modality.APPLICATION_MODAL);//模态窗体
        //非模态对应 Modality.NONE
        this.start(stage);
    }
}

new SubWindow(); //调用构造函数创建子窗体

내장 대화 상자

Alert alert = new Alert(Alert.AlertType.NONE, "hello", ButtonType.OK, ButtonType.CANCEL);
alert.setTitle("Hello");
Optional r = alert.showAndWait(); 
if (r.get()==ButtonType.OK){ //获取返回值的方式
    //...
} 

FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("open pics");
fileChooser.getExtensionFilters().addAll(
    new FileChooser.ExtensionFilter("img", "*.jpg;*.png"),
    new FileChooser.ExtensionFilter("gif", "*.gif")
);
Stage stage = (Stage) rootLayout.getScene().getWindow();
File file = fileChooser.showOpenDialog(stage);