JavaFx ListView中的索引OutOfBoundExceptionException

我已经创建了一个listview，它在文本字段被聚焦时填充。 类似的问题也曾被问过。但我没有找到解决办法。

请看这个问题并给出解决办法。

---

文本字段的更新应包装到

Platform.runLater（）

中，以避免此异常。正如Slaw已经提到的，GUI更新必须在JavaFX线程中运行

fx_products_list_view.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<String>() {
                @Override
                public void changed(
                        ObservableValue<? extends String> observable,
                        String oldValue, String newValue) {
                    Platform.runLater(()->fx_product_name_tb.setText(newValue));

                }
            });

fx\u产品\u列表\u视图。getSelectionModel（）.SelectEditeProperty（）.addListener（新的ChangeListener（））{
@凌驾
更改公众假期(
Observalevalue这看起来像是一个线程问题。您必须只从JavaFX应用程序线程更新GUI。请提供一个示例来演示该问题。与您的问题无关：请学习java命名约定并遵守它们。kleopatra请再次研究该问题。好的，我明白了。一种可能的解决方法是，当<代码>partialList

从技术上讲是一个

FilteredList

，当在

TextField

中键入文本时，过滤条件会更新。使用绑定可以在某种程度上实现这一点，这样就不会出现异常。请尝试以下示例，我只是不知道它是否具有您期望的行为。一种方法：，一种替代方法方法：@RanjitVamadevan这只会在

fx\u产品列表

未连接到实时场景图而

fx\u产品名称

未连接到实时场景图时有用，但我猜这两个对象都是实时的。您发布的堆栈跟踪表明某个后台线程正在以某种方式更新

列表视图

。我怀疑这是因为y在跟踪中显示JavaFX类，这意味着库中存在错误（不太可能），或者代码中存在线程问题（更可能）。从后台线程修改任何实时GUI对象可能导致未定义的行为，例如

IndexOutOfBoundsException

。

fx_product_name_tb.textProperty().addListener(new ChangeListener<String>() {
        @Override
        public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
            String partialName = fx_product_name_tb.getText();
            System.out.println("check : "+partialName);
            if(!partialName.equals("")){
                try {
                    partialList = searchName(productsList, partialName);
                }catch(IndexOutOfBoundsException ex){
                    System.out.println(ex.getMessage());
                }catch (NullPointerException ex){
                    System.out.println(ex.getMessage());
                }
                fx_products_list_view.getItems().setAll(partialList);//i am getting IndexOfBoundException here
            }


        }
    }); 

public static  ObservableList<String> searchName(ObservableList<String> list, String string){
    ObservableList<String> sub = FXCollections.observableArrayList();
    int size;
    for(String s : list){
        if(s.startsWith(string)){
            sub.add(s);
        }
    }
    return sub;
}

fx_products_list_view.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<String>() {
                @Override
                public void changed(
                        ObservableValue<? extends String> observable,
                        String oldValue, String newValue) {
                    fx_product_name_tb.setText(newValue);

                }
            });

Exception in thread "JavaFX Application Thread" java.lang.IndexOutOfBoundsException
at com.sun.javafx.scene.control.ReadOnlyUnbackedObservableList.subList(ReadOnlyUnbackedObservableList.java:136)
at javafx.collections.ListChangeListener$Change.getAddedSubList(ListChangeListener.java:242)
at com.sun.javafx.scene.control.behavior.ListViewBehavior.lambda$new$177(ListViewBehavior.java:269)
at javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
at com.sun.javafx.scene.control.ReadOnlyUnbackedObservableList.callObservers(ReadOnlyUnbackedObservableList.java:75)
at javafx.scene.control.MultipleSelectionModelBase.clearAndSelect(MultipleSelectionModelBase.java:378)
at javafx.scene.control.ListView$ListViewBitSetSelectionModel.clearAndSelect(ListView.java:1403)
at com.sun.javafx.scene.control.behavior.CellBehaviorBase.simpleSelect(CellBehaviorBase.java:256)
at com.sun.javafx.scene.control.behavior.CellBehaviorBase.doSelect(CellBehaviorBase.java:220)
at com.sun.javafx.scene.control.behavior.CellBehaviorBase.mousePressed(CellBehaviorBase.java:150)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:95)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)

fx_products_list_view.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<String>() {
                @Override
                public void changed(
                        ObservableValue<? extends String> observable,
                        String oldValue, String newValue) {
                    Platform.runLater(()->fx_product_name_tb.setText(newValue));

                }
            });