相关疑难解决方法(0)

我有一个带有observablelist的ComboBox,当用户输入字符或进行选择时,它会更新.当我从ComboBox中选择一个项目并调用我的侦听器事件然后从ComboBox的ObservableList中调用clear()方法时,会导致我遇到的问题.

完整的代码

    public void suggestItem(ActionEvent ev){
    String currentInput = foodSearch.getEditor().getText();
    if(currentInput.length() > 4){
        DatabaseCommunicator.openConnection();

        // Returns a list no greater than size 5 of possible food items
        ArrayList<String> foodList = DatabaseCommunicator.findSimilarFoods(currentInput);

        ObservableList<String> comboList = foodSearch.getItems();
        comboList.setAll(foodList);

        DatabaseCommunicator.closeConnection();
    }

}

现在,当我收到错误时,ObservableList会出现,但我仍然会遇到此异常.尝试调试这会导致我的IDE在调用运行clear()的setAll后冻结,我不得​​不通过终端杀死IDE.

如果我用addAll替换setAll而不清除()我没有抛出任何异常,我的列表更新时重新添加了点击的项目.

我无法捕获监听器中的异常,我希望看到堆栈跟踪,但无论如何都想尝试它.

这是堆栈跟踪.

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$178(ListViewBehavior.java:264)
    at com.sun.javafx.scene.control.behavior.ListViewBehavior$$Lambda$321/1588822558.onChanged(Unknown Source)
    at javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
    at com.sun.javafx.collections.ListListenerHelper$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:331)
    at javafx.scene.control.ListView$ListViewBitSetSelectionModel.clearAndSelect(ListView.java:1385)
    at com.sun.javafx.scene.control.behavior.CellBehaviorBase.simpleSelect(CellBehaviorBase.java:260)
    at com.sun.javafx.scene.control.behavior.CellBehaviorBase.doSelect(CellBehaviorBase.java:224)
    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 …