javafx tableview未从fxml加载（为空）

• Z时代
• 2024-01-10
• 分类：问答

我试图从小时后发现错误。我不知道是什么原因造成这个问题。我正在使用一个控制器类和一个fxml。问题是，在初始化函数中tableview是null。不知道为什么。 这里的控制器：javafx tableview未从fxml加载（为空）

package controller.popup; 
import controller.Controllerable; 
import elements.EditableTableCell; 
import java.net.URL; 
import java.util.ResourceBundle; 
import javafx.event.ActionEvent; 
import javafx.event.EventHandler; 
import javafx.fxml.FXML; 
import javafx.fxml.Initializable; 
import javafx.scene.control.TableCell; 
import javafx.scene.control.TableColumn; 
import javafx.scene.control.TableView; 
import javafx.scene.control.TextField; 
import javafx.scene.control.cell.PropertyValueFactory; 
import javafx.stage.WindowEvent; 
import javafx.util.Callback; 
import model.CDUSettings; 
import model.Modelable; 
import model.data.AnnouncementData; 
import model.data.PopupData; 
import model.popup.AnnouncmentsPopupModel; 
public class AnnouncementsPopupController implements Controllerable, Initializable 
{ 
// <editor-fold desc="fxml import stuff" defaultstate="collapsed"> 
    @FXML 
    private TableView<PopupData> guiAnnouncementsTable; 
    @FXML // fx:id="guiAnnouncementAddColor" 
    private TextField guiAnnouncementAddColor; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddDisplayedText" 
    private TextField guiAnnouncementAddDisplayedText; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddDuration" 
    private TextField guiAnnouncementAddDuration; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddFontEffect" 
    private TextField guiAnnouncementAddFontEffect; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddFontSize" 
    private TextField guiAnnouncementAddFontSize; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddId" 
    private TextField guiAnnouncementAddId; // Value injected by FXMLLoader 
    @FXML // fx:id="guiAnnouncementAddType" 
    private TextField guiAnnouncementAddType; // Value injected by FXMLLoader 
    @FXML // fx:id="guiColorColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementColorColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiDisplayedTextColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementDisplayedTextColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiDurationColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementDurationColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiFontEffectColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementFontEffectColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiFontSizeColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementFontSizeColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiIdColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementIdColumn; // Value injected by FXMLLoader 
    @FXML // fx:id="guiTypeColumn" 
    private TableColumn<AnnouncementData, String> guiAnnouncementTypeColumn; // Value injected by FXMLLoader 
// </editor-fold> 
    private Modelable model = null; 
    public AnnouncementsPopupController(){ 
    connectToModel(); 
    } 
    @Override 
    public Modelable getModel(){ 
    return model; 
    } 
    @Override 
    public void onCloseEvent(WindowEvent we) 
    { 
     CDUSettings.getInstance().clearAnnouncements(); 
    for(PopupData announce : model.getData()){ 
     CDUSettings.getInstance().addAnnouncement((AnnouncementData)announce); 
    } 
    } 
    @Override 
    public void initialize(URL url, ResourceBundle rb) 
    { 
     connectToModel(); 
     Callback<TableColumn<AnnouncementData, String> ,TableCell<AnnouncementData, String>> editableFactory = 
     new Callback<TableColumn<AnnouncementData, String>, TableCell<AnnouncementData, String>>() 
    { 
      @Override 
      public TableCell call(TableColumn p){ 
       return new EditableTableCell(); 
      } 
     }; 
     guiAnnouncementIdColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("id")); 
     guiAnnouncementIdColumn.setCellFactory(editableFactory); 
     guiAnnouncementIdColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setId(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementColorColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("color")); 
     guiAnnouncementColorColumn.setCellFactory(editableFactory); 
     guiAnnouncementColorColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setColor(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementDisplayedTextColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("displayedText")); 
     guiAnnouncementDisplayedTextColumn.setCellFactory(editableFactory); 
     guiAnnouncementDisplayedTextColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setDisplayedText(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementDurationColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("duration")); 
     guiAnnouncementDurationColumn.setCellFactory(editableFactory); 
     guiAnnouncementDurationColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setDuration(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementFontEffectColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("fontEffect")); 
     guiAnnouncementFontEffectColumn.setCellFactory(editableFactory); 
     guiAnnouncementFontEffectColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setFontEffect(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementFontSizeColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("fontSize")); 
     guiAnnouncementFontSizeColumn.setCellFactory(editableFactory); 
     guiAnnouncementFontSizeColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setFontSize(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementTypeColumn.setCellValueFactory(new PropertyValueFactory<AnnouncementData, String>("type")); 
     guiAnnouncementTypeColumn.setCellFactory(editableFactory); 
     guiAnnouncementTypeColumn.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<AnnouncementData, String>>() 
     { 
      @Override 
      public void handle(TableColumn.CellEditEvent<AnnouncementData, String> t){ 
       (t.getTableView().getItems().get(t.getTablePosition().getRow())).setType(t.getNewValue()); 
      } 
     }); 
     guiAnnouncementsTable.setItems(model.getData());//guiAnnouncementsTable==null at this point 
    } 
    public void newAddBtnEvent(ActionEvent event) 
    { 
     model.addDataEntry(new AnnouncementData(guiAnnouncementAddDisplayedText.getText(), 
       guiAnnouncementAddId.getText(), 
       guiAnnouncementAddColor.getText(), 
       guiAnnouncementAddFontEffect.getText(), 
       guiAnnouncementAddFontSize.getText(), 
       guiAnnouncementAddType.getText(), 
       guiAnnouncementAddDuration.getText())); 
     guiAnnouncementAddColor.clear(); 
     guiAnnouncementAddDisplayedText.clear(); 
     guiAnnouncementAddDuration.clear(); 
     guiAnnouncementAddFontEffect.clear(); 
     guiAnnouncementAddFontSize.clear(); 
     guiAnnouncementAddId.clear(); 
     guiAnnouncementAddType.clear(); 
     guiAnnouncementsTable.setItems(model.getData()); 
    } 
    private void connectToModel() 
    { 
    if(model == null){ 
     model = new AnnouncmentsPopupModel(); 
    } 
    } 
} 

这里FXML：

<?xml version="1.0" encoding="UTF-8"?> 
<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 
<?import javafx.scene.text.*?> 
<AnchorPane id="AnchorPane" minHeight="397.0" minWidth="264.0" prefHeight="397.0" prefWidth="819.0" xmlns:fx="http://javafx.com/fxml" fx:controller="controller.popup.AnnouncementsPopupController"> 
    <children> 
    <Label text="Announcements" AnchorPane.leftAnchor="14.0" AnchorPane.topAnchor="6.0"> 
     <font> 
     <Font name="System Bold" size="15.0" /> 
     </font> 
    </Label> 
    <TableView fx:id="guiAnnouncementTable" editable="true" prefHeight="311.0" prefWidth="236.0" tableMenuButtonVisible="true" AnchorPane.bottomAnchor="52.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="14.0" AnchorPane.topAnchor="34.0"> 
     <columns> 
     <TableColumn minWidth="75.0" prefWidth="100.0" text="Displayed Text" fx:id="guiAnnouncementDisplayedTextColumn" /> 
     <TableColumn prefWidth="75.0" text="ID" fx:id="guiAnnouncementIdColumn" /> 
     <TableColumn prefWidth="75.0" text="Color" fx:id="guiAnnouncementColorColumn" /> 
     <TableColumn prefWidth="75.0" text="FontEffect" fx:id="guiAnnouncementFontEffectColumn" /> 
     <TableColumn prefWidth="75.0" text="FontSize" fx:id="guiAnnouncementFontSizeColumn" /> 
     <TableColumn prefWidth="75.0" text="Type" fx:id="guiAnnouncementTypeColumn" /> 
     <TableColumn prefWidth="75.0" text="Duration" fx:id="guiAnnouncementDurationColumn" /> 
     </columns> 
    </TableView> 
    <HBox id="HBox" alignment="CENTER" prefWidth="236.0" spacing="5.0" AnchorPane.bottomAnchor="17.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="14.0"> 
     <children> 
     <TextField id="guiAnnouncementAddDisplayyedText" fx:id="guiAnnouncementAddDisplayedText" prefWidth="200.0" promptText="Displayed Text" /> 
     <TextField fx:id="guiAnnouncementAddId" prefWidth="79.0" promptText="ID" /> 
     <TextField fx:id="guiAnnouncementAddColor" prefWidth="79.0" promptText="Color" /> 
     <TextField fx:id="guiAnnouncementAddFontEffect" prefWidth="79.0" promptText="Font Effect" /> 
     <TextField fx:id="guiAnnouncementAddFontSize" prefWidth="79.0" promptText="Font Size" /> 
     <TextField fx:id="guiAnnouncementAddType" prefWidth="79.0" promptText="Type" /> 
     <TextField fx:id="guiAnnouncementAddDuration" prefWidth="79.0" promptText="Duration" /> 
     <Button mnemonicParsing="false" onAction="#newAddBtnEvent" text="Add" /> 
     </children> 
    </HBox> 
    </children> 
</AnchorPane> 

我绝望;（

回答：

private TableView<PopupData> guiAnnouncement**s**Table; 

<TableView fx:id="guiAnnouncementTable" 

以上是 javafx tableview未从fxml加载（为空） 的全部内容， 来源链接： utcz.com/qa/257508.html