我正在尝试将TableView放在分页中，我为FXML修改了一个示例，一个小时就可以了，但是现在显示此
Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Children: duplicate children added: parent = TableRow@4a034b[styleClass=cell indexed-cell table-row-cell]'null'
at javafx.scene.Parent$2.onProposedChange(Parent.java:458)
at com.sun.javafx.collections.VetoableListDecorator.setAll(VetoableListDecorator.java:115)
at com.sun.javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:507)
at com.sun.javafx.scene.control.skin.TableRowSkinBase.checkState(TableRowSkinBase.java:593)
at com.sun.javafx.scene.control.skin.TableRowSkinBase.computePrefHeight(TableRowSkinBase.java:528)
at javafx.scene.control.Control.computePrefHeight(Control.java:543)
at javafx.scene.Parent.prefHeight(Parent.java:924)
at javafx.scene.layout.Region.prefHeight(Region.java:1438)
at com.sun.javafx.scene.control.skin.VirtualFlow.resizeCellSize(VirtualFlow.java:1782)
at com.sun.javafx.scene.control.skin.VirtualFlow.addLeadingCells(VirtualFlow.java:1146)
at com.sun.javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1099)
at javafx.scene.Parent.layout(Parent.java:1076)
at javafx.scene.Parent.layout(Parent.java:1082)
at javafx.scene.Parent.layout(Parent.java:1082)
at javafx.scene.Parent.layout(Parent.java:1082)
at javafx.scene.Parent.layout(Parent.java:1082)
at javafx.scene.Parent.layout(Parent.java:1082)
at javafx.scene.Scene.doLayoutPass(Scene.java:576)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2386)
at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:321)
at com.sun.javafx.tk.Toolkit$3.run(Toolkit.java:319)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:319)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:348)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:479)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:460)
at com.sun.javafx.tk.quantum.QuantumToolkit$13.run(QuantumToolkit.java:327)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.access$200(GtkApplication.java:48)
at com.sun.glass.ui.gtk.GtkApplication$6$1.run(GtkApplication.java:149)
at java.lang.Thread.run(Thread.java:745)
如果我将分页更改为2或3并返回1，则无法选择该行
这是我的代码
@FXML
private Pagination pageTask;
private final ObservableList<Agenda> tasksList = FXCollections.observableArrayList();
private final TableView<Agenda> table = new TableView<>();
private final TableColumn<Agenda, LocalDate> dateCol = new TableColumn("Data");
private final TableColumn<Agenda, String> localCol = new TableColumn("Local");
private final TableColumn<Agenda, String> descCol = new TableColumn("Descrição");
private final TableColumn<Agenda, Boolean> confirmCol = new TableColumn("Confirmado");
private final TableColumn<Agenda, String> userCol = new TableColumn("Usuario Participante");
public int itemsPerPage()
{
return 1;
}
public int rowsPerPage()
{
return 10;
}
public void createTable(int page, int lastIndex, int pageIndex, int displace, VBox box)
{
for (int i = page; i < page + itemsPerPage(); i++)
{
dateCol.setCellValueFactory(
new PropertyValueFactory<>("date"));
dateCol.setMinWidth(20);
localCol.setCellValueFactory(
new PropertyValueFactory<>("local"));
localCol.setMinWidth(140);
descCol.setCellValueFactory(
new PropertyValueFactory<>("desciption"));
descCol.setMinWidth(140);
userCol.setCellValueFactory(
new PropertyValueFactory<>("nomeUser"));
descCol.setMinWidth(140);
confirmCol.setCellValueFactory(
new PropertyValueFactory<>("confirm"));
confirmCol.setMinWidth(20);
table.getColumns().addAll(dateCol, localCol, userCol, descCol, confirmCol);
table.setItems(tasksList);
box.getChildren().add(table);
}
}
public VBox createPage(int pageIndex)
{
int lastIndex = 0;
int displace = tasksList.size() % rowsPerPage();
if (displace > 0)
lastIndex = tasksList.size() / rowsPerPage();
else
lastIndex = tasksList.size() / rowsPerPage() - 1;
VBox box = new VBox(5);
int page = pageIndex * itemsPerPage();
createTable(page, lastIndex, pageIndex, displace, box);
return box;
}
public void setPage()
{
pageTask.setPageCount((tasksList.size() / rowsPerPage() - 1));
pageTask.setCurrentPageIndex(0);
pageTask.setPageFactory(pageIndex ->
{
if (pageIndex > tasksList.size() / rowsPerPage() + 1)
return null;
else
return createPage(pageIndex);
});
}
@Override
public void initialize(URL url, ResourceBundle rb)
{
populateTableAgenda();
table.setOnMouseClicked(ms ->
{
if (table.getSelectionModel().getSelectedIndex() >= 0)
selectItem();
});
setPage();
dateTask.requestFocus();
dateTask.getEditor().setOnMouseClicked(e ->
{
dateTask.show();
});
}
和我的fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.shape.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="450.0" prefWidth="572.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.omnieyes.controller.AgendaController">
<children>
<Pagination fx:id="pageTask" layoutX="22.0" layoutY="31.0" prefHeight="306.0" prefWidth="525.0" />
<VBox layoutX="7.0" layoutY="2.0">
<children>
<HBox alignment="TOP_CENTER" layoutX="132.0" layoutY="2.0" spacing="40.0" VBox.vgrow="ALWAYS">
<children>
<Button fx:id="btnInsertTask" mnemonicParsing="false" onAction="#newTask" text="Inserir Nova Tarefa" HBox.hgrow="ALWAYS" />
<Label alignment="CENTER" layoutX="111.0" layoutY="6.0" text="Tarefas Do Dia" textAlignment="CENTER" wrapText="true" HBox.hgrow="ALWAYS" />
<DatePicker fx:id="dateTask" editable="false" nodeOrientation="LEFT_TO_RIGHT" onAction="#filterPerDate" prefHeight="25.0" prefWidth="207.0" promptText="Pesquisar por Data" />
</children>
</HBox>
</children>
</VBox>
<Separator layoutX="8.0" layoutY="336.0" prefHeight="17.0" prefWidth="555.0" />
<Label layoutX="213.0" layoutY="344.0" text="Dados da Tarefa" />
<HBox layoutX="14.0" layoutY="366.0" spacing="50.0">
<children>
<Label fx:id="date" layoutX="14.0" layoutY="370.0" text="Data" visible="false" />
<HBox>
<children>
<Label alignment="CENTER" layoutX="90.0" layoutY="375.0" text="Local" textAlignment="CENTER" translateY="5.0" HBox.hgrow="ALWAYS">
<HBox.margin>
<Insets />
</HBox.margin>
</Label>
<TextField fx:id="txtLocalTask" layoutX="125.0" layoutY="366.0" HBox.hgrow="ALWAYS">
<HBox.margin>
<Insets />
</HBox.margin>
</TextField>
</children>
</HBox>
<CheckBox fx:id="confirmTask" layoutX="294.0" layoutY="370.0" mnemonicParsing="false" text="Confirmar Presença">
<HBox.margin>
<Insets />
</HBox.margin>
</CheckBox>
</children>
</HBox>
<HBox layoutX="13.0" layoutY="400.0" spacing="385.0">
<children>
<Button fx:id="saveTask" layoutX="13.0" layoutY="400.0" mnemonicParsing="false" onAction="#saveTask" text="Salvar" />
<Button fx:id="removeTask" layoutX="418.0" layoutY="400.0" mnemonicParsing="false" onAction="#removeTask" text="Remover " />
</children>
</HBox>
</children>
最佳答案
我已经解决了这个问题。引用FXML文件时，应使用绝对路径。像这样 ：
Parent root = FXMLLoader.load(getClass().getResource("/Hos/Hospital.fxml"));
关于java - 线程“JavaFX Application Thread”中的异常java.lang.IllegalArgumentException:子代:添加了重复的子代:parent = TableRow @ adc848，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/23874795/