来自外国控制器的 JavaFX TabPane Tab select

Question

在我根据这个有用的 post (PASSING PARAMETERS JAVAFX FXML) 更改我的代码后，我的 setTab 函数无法正常工作。它被调用了，但没有做它应该做的事情。

Main.java

public class Main extends Application {

public static void main(String[] args) {
    launch(args);
}
@Override
public void start(Stage primaryStage){
        Controller1 controller1 = new Controller1();
        controller1.showStage();
  }
}

Controller1.java

public class Controller1{

    private final Stage thisStage;
    private Controller2 controller2 = new Controller2(this);

    public Controller1() {
    thisStage = new Stage();

    try {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("Steuerung.fxml"));
        loader.setController(this);
        thisStage.setScene(new Scene(loader.load()));
        thisStage.setTitle("Steuerung");
    }catch (IOException e){
        e.printStackTrace();
     }
    }

    public void showStage(){ thisStage.show();}

    @FXML private void initialize() {
        b_AnzeigeÖffnen.setOnAction(e -> openAnzeige());
        b_Ecke.setOnMouseClicked(e -> controller2.setTab(2));
    }

    private void openAnzeige(){
        Controller2 controller2 = new Controller2(this);
        controller2.showStage();
    }

    @FXML
    private Label b_Ecke;

    @FXML
    private MenuItem b_AnzeigeÖffnen

}

Controller2.java

public class Controller2 {

private Stage thisStage;

private final Controller1 controller1;

public Controller2(Controller1 controller1) {
    this.controller1 = controller1;
    thisStage = new Stage();
    try {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("Anzeige.fxml"));
        loader.setController(this);
        thisStage.setScene(new Scene(loader.load()));
        thisStage.setTitle("Spielstand");

        }catch (IOException e){
            e.printStackTrace();
        }
}

public void showStage() { thisStage.show();}


@FXML
private TabPane TP_A;

@FXML
private Tab tA_Home;

@FXML
private Tab tA_EckePreview;

@FXML
private Tab tA_EckVerhältnis;

@FXML
private Tab tA_Spielverlauf;

@FXML
private Tab tA_Spielstatistik;

@FXML
private Tab tA_GelbeKarte;

@FXML
private Tab tA_RoteKarte;

@FXML
private Tab tA_Elfmeter;

@FXML
private Tab tA_Auswechselung;


@FXML public void setTab(Integer i) {
   System.out.println("TABSWITCH");
    switch(i) {
        case 1: TP_A.getSelectionModel().select(tA_Home); break;
        case 2: TP_A.getSelectionModel().select(tA_EckePreview); break;
        case 3: TP_A.getSelectionModel().select(tA_EckVerhältnis); break;
        case 4: TP_A.getSelectionModel().select(tA_Spielverlauf); break;
        case 5: TP_A.getSelectionModel().select(tA_Spielstatistik); break;
        case 6: TP_A.getSelectionModel().select(tA_GelbeKarte); break;
        case 7: TP_A.getSelectionModel().select(tA_RoteKarte); break;
        case 8: TP_A.getSelectionModel().select(tA_Elfmeter); break;
        case 9: TP_A.getSelectionModel().select(tA_Auswechselung); break;
        //case 10: TP_A.getSelectionModel().select(tA_Nachspielzeit/Verlängerung); break; -> TODO
        default: System.out.println("Fehler: Tab in TP_A nicht vorhanden!"); break;
        }
    }
}

!packages and imports are removed bc of Body length!

I know that I have to rewrite the last few functions as they could easy be one.

Steuerung.fxml 和 Anzeige.fxml 会太长。如果你想看到它们，这里是完整的 GitLab 项目。 GitLab Project

Sorry for the German comments, function/var names and or objects

感谢您的建议！

Edit: Grammar

Answer 1

在Controller1中创建一个Controller2实例作为实例变量：

private Controller2 controller2 = new Controller2(this);

并且当用户单击 b_Ecke 标签时，您在该实例中更改选项卡：

b_Ecke.setOnMouseClicked(e -> controller2.setTab(2));

但是，您的代码中没有任何地方可以在 Controller2 的实例上调用 showStage，因此您正在更改未显示的选项卡选择。

当用户选择 b_AnzeigeÖffnen 菜单项时，您创建一个 new Controller2 实例，并显示该实例：

b_AnzeigeÖffnen.setOnAction(e -> openAnzeige());

private void openAnzeige(){
    Controller2 controller2 = new Controller2(this);
    controller2.showStage();
}

相反，只显示您已经创建的 Controller2 实例：

b_AnzeigeÖffnen.setOnAction(e -> openAnzeige());

private void openAnzeige(){
    // Controller2 controller2 = new Controller2(this);
    controller2.showStage();
}

来自外国控制器的 JavaFX TabPane Tab select

JavaFX TabPane Tab select from foreign Controller

java

javafx

tabpanel