Question

如何从不同的舞台（窗口）向已存在的ListView添加项目。

基本上我只想将WindowView中的Text从Window 2添加到ListView中的ListView。

提前致谢。

抱歉，我忘了这是我在控制器课程中到目前为止所做的:(我是javafx的初学者......）

（下面我尝试将一个字符串添加到ListView但这不起作用......我不知道为什么）

public class ClientGUIController implements Initializable {


    @FXML private Text usernameText;
    @FXML private Button cancelButtonNewDate;
    @FXML private TextField newDateTitel,newDateJahr;
    @FXML private TextArea newDateNotiz;
    @FXML private ComboBox<String> newDateTag,newDateMonat,newDateStunde,newDateMinute;
    @FXML private ListView<String> terminListView;


    private  ObservableList<String> termine = 
            FXCollections.observableArrayList();
     private ObservableList<String> listItems = FXCollections.observableArrayList("Add Items here");



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


    }

    public Text getUsernameText() {
        return usernameText;
    }

    public void setUsernameText(String username ) {
        this.usernameText.setText(username);

        terminListView.setItems(listItems);
        listItems.add("test");

    }



    public void newDate() {

        Stage newDate = new Stage();

        Parent root;
        try {
            root = FXMLLoader.load(getClass().getResource("newDate.fxml"));
//          FXMLLoader loader = new FXMLLoader();
//          root = (Parent) loader.load(getClass().getResource("NewDate.fxml").openStream());

        } catch (IOException e) {
            e.printStackTrace();
            return;
        }
        Scene sceneNewDate = new Scene(root);
//      sceneNewDate.getStylesheets().add(getClass().getResource("Style.css").toExternalForm());



        newDate.setTitle("Neuer Termin");
        newDate.setScene(sceneNewDate);
        newDate.show();


    }


    public void createNewDate() throws IOException {


//      Termine meinTermin = new Termine(Integer.parseInt(newDateTag.getValue()), Integer.parseInt(newDateMonat.getValue()), Integer.parseInt(newDateJahr.getText()), newDateTitel.getText(), newDateNotiz.getText(),
//              Integer.parseInt(newDateStunde.getValue()), Integer.parseInt(newDateMinute.getValue()));

        //Add item to ListView
        listItems.add("test"); <- this doesnt work



    }



    public void closeDialogue(){

          Stage stage = (Stage) cancelButtonNewDate.getScene().getWindow();
            stage.close();
    }

}

Answer 1

执行此操作的一种方法是将listItems传递给newDate.fxml的控制器，这样它就可以添加到该列表中。因此，假设newDate.fxml的控制器类为NewDateController，您可以执行以下操作：

public class NewDateController {

    private ObservableList<String> data ;

    public void setData(ObservableList<String> data) {
        this.data = data ;
    }

    // other code as before...

    // button handler:
    @FXML
    private void handleButtonPress() {
        data.addItem("test");
    }

}

然后在你的ClientGUIController中，像这样加载fxml：

public void newDate() {

    Stage newDate = new Stage();

    Parent root;
    try {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("newDate.fxml"));
        root = loader.load();
        NewDateController controller = loader.getController();
        controller.setData(listItems);

    } catch (IOException e) {
        e.printStackTrace();
        return;
    }
    Scene sceneNewDate = new Scene(root);

    newDate.setTitle("Neuer Termin");
    newDate.setScene(sceneNewDate);
    newDate.show();


}

JavaFX - 如何从不同的Stage添加Item到ListView？

1 个答案: