JavaFX 与场景构建器控制器错误关于 addAll？

Question

将 JavaFX 与 Scene Builder 一起使用时出现错误。 我不明白为什么我收到错误。 我认为方法addAll()有问题。

public class FXML_PatientListController implements Initializable {
    private Room rr=null;

    @FXML
    private TextArea p_id;
    @FXML
    private TextArea p_name;
    @FXML
    private TextArea sk;
    @FXML
    private Button enter;
    @FXML
    private Button delete;
    @FXML
    private TableView<?> list;
    @FXML
    private TableColumn<?, ?> p_id_T;
    @FXML
    private TableColumn<?, ?> p_name_T;
    @FXML
    private TableColumn<?, ?> Sk_T;

    @FXML
    private void close (ActionEvent av){
        System.exit(0);
    }

    /**
     * Initializes the controller class.
     */
    public void setPatientInfo(Room r) {
        rr = r;
        showPatients(null);
    }

    public void showPatients(Event s) {
        list.getItems().clear();
        if (rr != null) {
            list.getItems().addAll(rr.getPatient()); // I get a error here.
        }
    }

和错误：

no suitable method found for addAll(ArrayList<Patient>) method List.addAll(Collection<? extends CAP#1>) is not applicable (argument mismatch; ArrayList<Patient> cannot be converted to Collection<? extends CAP#1>) method ObservableList.addAll(CAP#1...) is not applicable (varargs mismatch; ArrayList<Patient> cannot be converted to CAP#1) where CAP#1 is a fresh type-variable: CAP#1 extends Object from capture of ? ---- (Alt-Enter shows hints)

我从面向对象的课程中得到了这个项目。

Answer 1

我认为在添加数据之前，您还有一些事情需要处理。 您需要键入将您的列分配给 Patient 类和每个字段类型。 下面的一些 sudo 代码...

@FXML
private TableView<Patient> tbl;
@FXML
private TableColumn< Patient, String> patientName;

private final ObservableList< Patient > tblData = FXCollections.observableArrayList();

@Override
public void initialize(URL url, ResourceBundle rb) {
    setPatientName(patientName);
    tbl.setItems(tblData);
}

/**
* Use this method to set the column properties. You should of course make this generic but just by way of an example...
*/
public static void setPatientName(TableColumn< Patient, String> column) {
    column.setCellValueFactory(new PropertyValueFactory<>("patientName"));
    column.setCellFactory(TextFieldTableCell.forTableColumn());
}