FilteredList.setPredicate抛出ArrayIndexOutOfBoundsException

Question

Hy guys，

我对JavaFX知识感到困惑。每次我的ObservableList更改时，我想实现我的过滤器列表中显示的列表（此处未显示，但代码重现了错误）。不幸的是，我有一个奇怪的问题。 每当我在ListChangeListener中更改我的属性时，以下代码抛出一个ArrayIndexOutOfBoundsException。

package com.tests.misterpresident;

import javafx.application.Application;
import javafx.beans.Observable;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.concurrent.Task;
import javafx.stage.Stage;

import java.util.Random;

public class Tester extends Application {

    private static ObservableList<Person> myPersons;
    private static FilteredList<Person> filteredPersons;

    public static void main(String[] args) {
        myPersons = FXCollections.observableArrayList(person -> new Observable[]{person.duplicateProperty()});
        filteredPersons = new FilteredList<>(myPersons, p -> p.getDuplicate());

        myPersons.addListener((ListChangeListener<Person>) change ->
        {
            //check for duplicates
            while (change.next())
            {
                for(Person p1 : change.getAddedSubList())
                {
                    for(Person p2 : myPersons)
                    {
                        if(p1 == p2)
                            continue;
                        if(p1.getName().equals(p2.getName()))
                        {
                            p1.setDuplicate(true);
                            p2.setDuplicate(true);
                        }
                    }
                }
            }
        });

        Task t = new Task<Void>() {
            Random r = new Random();

            @Override
            protected Void call() {
                for (int i = 0; i < 100; i++) {
                    int number = r.nextInt(10);
                    myPersons.add(new Person("Test" + number));
                }
                System.out.println("Finished");
                return null;
            }
        };

        Thread thread = new Thread(t);
        thread.run();
    }

    @Override
    public void start(Stage stage) {

    }

    static class Person{
        private String name;
        private BooleanProperty duplicate = new SimpleBooleanProperty(false);

        public Person(String name) {
            this.name = name;
            System.out.println("Created Person " + name);
        }

        public String getName() {
            return name;
        }

        public void setName(String name)
        {
            this.name = name;
        }

        public BooleanProperty duplicateProperty() {
            return duplicate;
        }

        public boolean getDuplicate()
        {
            return this.duplicate.get();
        }

        public void setDuplicate(boolean duplicate)
        {
            this.duplicate.setValue(duplicate);
        }
    }
}

你们有胶水如何解决这个问题，或者你知道更好的解决方案。

谢谢！

修改 回溯：

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
    at java.lang.System.arraycopy(Native Method)
    at javafx.collections.transformation.FilteredList.addRemove(FilteredList.java:269)
    at javafx.collections.transformation.FilteredList.sourceChanged(FilteredList.java:144)
    at javafx.collections.transformation.TransformationList.lambda$getListener$0(TransformationList.java:106)
    at javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
    at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
    at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
    at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
    at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:524)
    at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
    at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
    at com.sun.javafx.collections.ObservableListWrapper.access$200(ObservableListWrapper.java:45)
    at com.sun.javafx.collections.ObservableListWrapper$1$1.invalidated(ObservableListWrapper.java:75)
    at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(ExpressionHelper.java:137)
    at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
    at javafx.beans.property.BooleanPropertyBase.fireValueChangedEvent(BooleanPropertyBase.java:103)
    at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:110)
    at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:144)
    at javafx.beans.property.BooleanProperty.setValue(BooleanProperty.java:81)
    at com.tests.misterpresident.Tester$Person.setDuplicate(Tester.java:101)
    at com.tests.misterpresident.Tester.lambda$main$2(Tester.java:41)
    at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
    at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
    at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
    at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
    at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
    at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
    at javafx.collections.ModifiableObservableListBase.add(ModifiableObservableListBase.java:155)
    at java.util.AbstractList.add(AbstractList.java:108)
    at com.tests.misterpresident.Tester$1.call(Tester.java:56)
    at com.tests.misterpresident.Tester$1.call(Tester.java:49)
    at javafx.concurrent.Task$TaskCallable.call(Task.java:1423)
    at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
    at java.util.concurrent.FutureTask.run(FutureTask.java)
    at java.lang.Thread.run(Thread.java:748)
    at com.tests.misterpresident.Tester.main(Tester.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
    at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)