java.lang.IndexOutOfBoundsException:索引18无效，大小为18

这是个例外

java.lang.IndexOutOfBoundsException:索引18无效，大小为18 位于java.util.ArrayList.ThrowindexOutfBoundsException（ArrayList.java:255） 获取（ArrayList.java:308） TestActivity$5.onClick（TestActivity.java:280）位于 android.view.view.performClick（view.java:4780）位于 查看$PerformClick.run（view.java:19866） handleCallback（Handler.java:739）位于 dispatchMessage（Handler.java:95）位于 Looper.loop（Looper.java:135）位于 main（ActivityThread.java:5254）位于 java.lang.reflect.Method.invoke（本机方法）位于 java.lang.reflect.Method.invoke（Method.java:372）位于 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:903） 位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:698）

自定义对象类

//method just notifies the RecyclerView that an item was removed.
public void removeFromItemsData(int position){

    notifyItemRemoved(position);
}

如何添加数据

在onCreate活动中，我实例化了Recyclerview。RecyclerView接受一个arraylist，所以我传递一个空的

public class CustomObject{
    private String name;
    private int distance;
    private String category;
    private String id;
    private double rating;
    private String ratingColor;
    private String prefix;
    private String suffix;
    private int priceTier;
    private String currency;
    private String phone;
    private String twitter;
    private String url;
    private String menu;
    String address;
    String city;
    String state;
    String postalCode;
    double lat;
    double lng;
    String review;
    int reviewCount;
    String firstName;
    String lastName;
    String userIconPrefix;
    String userIconSuffix;
    String secondsReview;

    public CustomObject() {
        this.name = "";
        this.distance = 0;
        this.setCategory("");
        this.id = "";
        this.rating = 0;
        this.ratingColor = "";
        this.prefix = "";
        this.suffix = "";
        this.priceTier = 0;
        this.currency = "";
        this.phone = "";
        this.twitter = "";
        this.url = "";
        this.menu = "";
        this.address = "";
        this.city = "";
        this.state = "";
        this.postalCode = "";
        this.lat = 0;
        this.lng = 0;
        this.review = "";
        this.reviewCount = 0;
        this.firstName = "";
        this.lastName = "";
        this.userIconPrefix = "";
        this.userIconSuffix = "";
        this.secondsReview = "";
    }

    public void setSecondsReview(String secondsReview){
        this.secondsReview = secondsReview;
    }

    public String getSecondsReview(){
        return secondsReview;
    }

    public void setUserIconSuffix(String userIconSuffix){
        this.userIconSuffix = userIconSuffix;
    }

    public String getUserIconSuffix(){
        return userIconSuffix;
    }

    public void setUserIconPrefix(String userIconPrefix){
        this.userIconPrefix = userIconPrefix;
    }

    public String getUserIconPrefix(){
        return userIconPrefix;
    }

    public void setFirstName(String firstName){
        this.firstName = firstName;
    }

    public String getFirstName(){
        return firstName;
        //todo if String firstNAme == null, then return "a foursquare user"
    }

    public void setLastName(String lastName){
        this.lastName = lastName;
    }

    public String getLastName(){
        return lastName;
    }

    public void setReviewCount(int reviewCount){
        this.reviewCount = reviewCount;
    }

    public int getReviewCount(){
        return reviewCount;
    }

    public void setReview(String review){
        this.review = review;
    }

    public String getReview(){
        return review;
    }

    public void setLng(double lng){
        this.lng = lng;
    }

    public double getLng(){
        return lng;
    }

    public void setLat(double lat){
        this.lat = lat;
    }

    public double getLat(){
        return lat;
    }

    public void setPostalCode(String postalCode){
        this.postalCode = postalCode;
    }

    public String getPostalCode(){
        return postalCode;
    }

    public void setState(String state){
        this.state = state;
    }

    public String getState(){
        return state;
    }

    public void setCity(String city){
        this.city = city;
    }

    public String getCity(){
        return city;
    }

    public void setAddress(String address){
        this.address = address;
    }

    public String getAddress(){
        return address;
    }

    public void setMenuUrl(String menu){
        this.menu = menu;
    }

    public String getMenuUrl(){
        return menu;
    }

    public void setUrl(String url){
        this.url = url;
    }

    public String getUrl(){
        return url;
    }

    public void setTwitter(String twitter){
        this.twitter = twitter;
    }

    public String getTwitter(){
        return twitter;
    }

    public void setPhone(String phone){
        this.phone = phone;
    }

    public String getPhone(){
        return phone;
    }

    public String getCurrency(){
        return currency;
    }

    public void setCurrency(String currency){
        this.currency = currency;
    }

    public int getPriceTier(){
        return priceTier;
    }

    public void setPriceTier(int priceTier){
        this.priceTier = priceTier;
    }

    public String getSuffix(){
        return suffix;
    }

    public void setSuffix(String suffix){
        this.suffix = suffix;
    }

    public  String getPrefix(){
        return prefix;
    }

    public void setPrefix(String prefix){
        this.prefix = prefix;
    }

    public double getRating(){
        if(rating > 0){
            return rating;
        }
        return 0; //TODO display symbol if rating not found
    }

    public void setRating(double rating){
        this.rating = rating;
    }

    public Integer getDistance() {
        if (distance >= 0) {
            return distance;
        }
        return 0; //TODO display symbol if distance not found, like N/A
    }

    public void setDistance(int distance) {
            this.distance = distance;
    }

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

    public String getName() {
        return name;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getId() {
        return id;
    }

}

稍后在AsyncTask中，我将这些项添加到适配器中

List listTitle = new ArrayList(); //empty arraylist
mAdapter = new Fragment1Adapter(listTitle);

RecyclerView mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setAdapter(mAdapter);

编辑

由于您已经完成了我们的聊天和编辑：

您需要在ArrayList中添加和删除这些项，并通知适配器更改

public void addItem(FoursquareVenue data) {
        itemsData.add(data);
        notifyItemInserted(itemsData.size() - 1);
    }

然后在ArrayList中循环以删除项

---

您只是在试图访问数据的方式上有点混乱

有一个问题是，您正在创建CustomObjects的迭代器，并将其解析为数据类型

mAdapter.getItemsData（）

从迭代器中删除元素应将其从列表中删除

CustomObject poi = new CustomObject ();
if (jsonArray.getJSONObject(i).has("venue")) {
    poi.setName(jsonArray.getJSONObject(i).getJSONObject("venue").getString("name"));
    poi.setId(jsonArray.getJSONObject(i).getJSONObject("venue").getString("id"));
}
listTitle.addItem(poi);// Add to ListArray

for（Iterator Iterator=mAdapter.Iterator（）；Iterator.hasNext（）；）{ CustomObject itemsData=iterator.next（）； if（itemsData.getItemsData（）.get（i）.getPriceTier（）！=1）{//if语句引发错误 //从迭代器和列表中删除当前元素。 iterator.remove（）； } i++； } CustomObject itemsData=iterator.next（）；

---

让我知道这是否有帮助。

异常的第一行清楚地说明了问题所在。索引从0开始，大小为-1，带有“CustomObject itemsData=iterator.next（）；”我只能访问setter和getter。我需要访问arraylist，它位于适配器类中。感谢您尝试ti帮助：）我正在尝试循环一个arraylist，并删除所选位置的所有数据，这不符合某些条件。所有数据都显示在RecyclerView中，这就是我调用notifyItemRemoved（position）；：）的原因@大家好，因为我有一个RecyclerView，它需要一个适配器，它需要一个arraylist，所以我创建了一个空的arraylist并将其传递给我的adapter类。稍后，我通过在适配器类中添加数据的方法来添加数据。方法：“public void addItem（FoursquareVenue数据）{itemsData.add（数据）；notifyItemInserted（itemsData.size（）-1）；}”。@您添加了CustomObjects类

public void addItem(FoursquareVenue data) {
        itemsData.add(data);
        notifyItemInserted(itemsData.size() - 1);
    }

CustomObject poi = new CustomObject ();
if (jsonArray.getJSONObject(i).has("venue")) {
    poi.setName(jsonArray.getJSONObject(i).getJSONObject("venue").getString("name"));
    poi.setId(jsonArray.getJSONObject(i).getJSONObject("venue").getString("id"));
}
listTitle.addItem(poi);// Add to ListArray

 for (Iterator<CustomObject> iterator = mAdapter.iterator(); iterator.hasNext();) {
     CustomObject itemsData = iterator.next();
     if (itemsData.getItemsData().get(i).getPriceTier() != 1) { //if statement throws error
            // Remove the current element from the iterator and the list.

            iterator.remove();
        }
        i++;
      }
    CustomObject itemsData = iterator.next();