Android EndlessRecycleViewScrollListener不显示RecycleView上的所有项

我在数据库中有24行，从1到24，但当我尝试在RecycleView上显示项时，EndlesRecycleWebScrollListener类的问题变成了随机项

截图

绿色圆圈=#20 红色圆圈=#11

为什么是11而不是21

我要显示从#1到#24的项目

后活性

后萨达普特

public类PostsAdapter扩展了RecyclerView.Adapter{
语境；
列出后模型；
int lastCheckedPosition=-1；
公共PostsAdapter（上下文、列表postsmodel）{
this.context=上下文；
this.postsModels=postsModels；
}
@非空
@凌驾
public posts onCreateViewHolder（@NonNull ViewGroup ViewGroup，int i）{
View View=LayoutInflater.from（viewGroup.getContext（））.flate（R.layout.row_posts，viewGroup，false）；
posts viewHolder=新帖子（视图）；
返回视图持有者；
}
@凌驾
public void onBindViewHolder（@NonNull posts posts，int i）{
PostsModels列表=PostsModels.get（i）；
//定影
Picasso.get（）.load（“http://graph.facebook.com/“+list.user_id+”/picture？type=large“）.into（posts.img_profile）；
//固定词
posts.txt_word.setText（list.word）；
//设置id
posts.txt_id.setText（“#”+list.id）；
//集合描述
posts.txt_description.setText（list.description）；
//如果检查
如果（lastCheckedPosition==i）{
posts.linear_layout.setBackgroundColor（context.getResources（）.getColor（R.color.posts_item_selected_1））；
posts.frame_pink.setVisibility（View.VISIBLE）；
}否则{
posts.linear_layout.setBackgroundColor（0x000000000）；
posts.frame_pink.setVisibility（视图.不可见）；
}
}
@凌驾
public int getItemCount（）{
返回postsModels.size（）；
}
类文章扩展了RecyclerView.ViewHolder{
@BindView（R.id.linear_布局）
线性布局线性布局；
@BindView（R.id.frame_粉色）
框架布局框架为粉红色；
@BindView（R.id.img_剖面）
CircleImageView img_剖面图；
@BindView（R.id.txt\u单词）
text查看字体txt_单词；
@BindView（R.id.txt\u id）
TextViewFont txt_id；
@BindView（R.id.txt_说明）
TextViewFont txt_描述；
@OnClick（R.id.linear\u布局）
公共void onClick（）{
lastCheckedPosition=getAdapterPosition（）；
notifyDataSetChanged（）；
}
公共职位（视图）{
超级（视图）；
ButterKnife.bind（这个，视图）；
}
}
}

EndlessRecycleViewScrollListener

公共抽象类endlessRecycleWebScrollListener扩展了RecycleView.OnScrollListener{
//低于当前滚动位置的最小项目数
////在加载更多之前。
私有int visibleThreshold=5；
//已加载数据的当前偏移索引
private int currentPage=0；
//上次加载后数据集中的项目总数
private int previousTotalItemCount=0；
//如果仍在等待加载最后一组数据，则为True。
私有布尔加载=真；
//设置起始页索引
私有int startingPageIndex=0；
RecyclerView.LayoutManager mllayoutmanager；
public endlessRecycleViewScrollListener（LinearLayoutManager布局管理器）{
this.mLayoutManager=layoutManager；
}
public endlessRecycleViewScrollListener（GridLayoutManager布局管理器）{
this.mLayoutManager=layoutManager；
VisibleThrreshold=VisibleThrreshold*layoutManager.getSpanCount（）；
}
public EndlessRecycleViewScrollListener（交错边缘布局管理器布局管理器）{
this.mLayoutManager=layoutManager；
VisibleThrreshold=VisibleThrreshold*layoutManager.getSpanCount（）；
}
public int getLastVisibleItem（int[]lastVisibleItemPositions）{
int maxSize=0；
对于（int i=0；imaxSize）{
maxSize=lastVisibleItemPositions[i]；
}
}
返回最大大小；
}
//在滚动过程中，这种情况在一秒钟内会发生很多次，因此请小心放置在此处的代码。
//我们得到了一些有用的参数，以帮助我们确定是否需要加载更多数据，
//但首先我们检查是否在等待前一次加载完成。
@凌驾
已克隆的公共无效（RecyclerView视图、int dx、int dy）{
int lastVisibleItemPosition=0；
int totalItemCount=mLayoutManager.getItemCount（）；
if（交错边缘布局管理器的mLayoutManager实例）{
int[]lastVisibleItemPositions=（（StaggedGridLayoutManager）mLayoutManager）。findLastVisibleItemPositions（null）；
//获取列表中的最大元素
lastVisibleItemPosition=getLastVisibleItem（lastVisibleItemPositions）；
}else if（网格布局管理器的mLayoutManager实例）{
lastVisibleItemPosition=（（GridLayoutManager）mLayoutManager）.findLastVisibleItemPosition（）；
}else if（线性布局管理器的mLayoutManager实例）{
lastVisibleItemPosition=（（LinearLayoutManager）mLayoutManager）。findLastVisibleItemPosition（）；
}
//如果项目总数为零，而前一个不是，则假定
//列表无效，应重置回初始状态
if（totalItemCountpublic class PostsActivity extends AppCompatActivity {

    @BindView(R.id.rv_posts)
    RecyclerView rv_posts;
    SaveSystem saveSystem;
    List<PostsModels> postsModels = new ArrayList<>();
    PostsAdapter postsAdapter;
    EndlessRecyclerViewScrollListener scrollListener;
    int page = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_posts);
        ButterKnife.bind(this);
        saveSystem = new SaveSystem(this);
        //check first time
        if (saveSystem.LoadBooleanData("FirstTime")) {
            saveSystem.SaveStringData("language", "en");
            saveSystem.SaveBooleanData("FirstTime", false);
        }
        //setData
        setData();
    }

    void setData() {
        postsAdapter = new PostsAdapter(PostsActivity.this, postsModels);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(PostsActivity.this, LinearLayoutManager.VERTICAL, false);
        rv_posts.setLayoutManager(linearLayoutManager);
        rv_posts.setAdapter(postsAdapter);
        scrollListener = new EndlessRecyclerViewScrollListener(linearLayoutManager) {
            @Override
            public void onLoadMore(int i, int totalItemsCount, RecyclerView view) {
                page = page + 10;
                Toast.makeText(PostsActivity.this, "" + page, Toast.LENGTH_SHORT).show();
                retrofit(page);
            }
        };
        rv_posts.addOnScrollListener(scrollListener);
        retrofit(page);
    }

    void retrofit(int number) {
        Retrofit retrofit = new Retrofit.Builder().baseUrl("http://***").addConverterFactory(GsonConverterFactory.create()).build();
        HTTP http = retrofit.create(HTTP.class);
        Call<List<PostsModels>> call = http.get_posts(saveSystem.LoadStringData("language"), number);
        call.enqueue(new Callback<List<PostsModels>>() {
            @Override
            public void onResponse(Call<List<PostsModels>> call, Response<List<PostsModels>> response) {
                List<PostsModels> list = response.body();
                for (PostsModels i : list) {
                    postsModels.add(new PostsModels(i.id, i.user_id, i.user_name, i.word, i.description, i.sound, i.level, i.shortcut));
                }
                postsAdapter.notifyItemRangeInserted(postsAdapter.getItemCount(), list.size() - 1);
            }

            @Override
            public void onFailure(Call<List<PostsModels>> call, Throwable t) {

            }
        });
    }

}

public class PostsModels {

    @SerializedName("id")
    String id;
    @SerializedName("user_id")
    String user_id;
    @SerializedName("user_name")
    String user_name;
    @SerializedName("word")
    String word;
    @SerializedName("description")
    String description;
    @SerializedName("sound")
    String sound;
    @SerializedName("level")
    String level;
    @SerializedName("shortcut")
    String shortcut;

    public PostsModels(String id, String user_id, String user_name, String word, String description, String sound, String level, String shortcut) {
        this.id = id;
        this.user_id = user_id;
        this.user_name = user_name;
        this.word = word;
        this.description = description;
        this.sound = sound;
        this.level = level;
        this.shortcut = shortcut;
    }
}

public class PostsAdapter extends RecyclerView.Adapter<PostsAdapter.posts> {

    Context context;
    List<PostsModels> postsModels;
    int lastCheckedPosition = -1;

    public PostsAdapter(Context context, List<PostsModels> postsModels) {
        this.context = context;
        this.postsModels = postsModels;
    }

    @NonNull
    @Override
    public posts onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.row_posts, viewGroup, false);
        posts viewHolder = new posts(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull posts posts, int i) {
        PostsModels list = postsModels.get(i);
        //set photo
        Picasso.get().load("http://graph.facebook.com/" + list.user_id + "/picture?type=large").into(posts.img_profile);
        //set word
        posts.txt_word.setText(list.word);
        //set id
        posts.txt_id.setText("#" + list.id);
        //set description
        posts.txt_description.setText(list.description);
        //if checked
        if (lastCheckedPosition == i) {
            posts.linear_layout.setBackgroundColor(context.getResources().getColor(R.color.posts_item_selected_1));
            posts.frame_pink.setVisibility(View.VISIBLE);
        } else {
            posts.linear_layout.setBackgroundColor(0x000000000);
            posts.frame_pink.setVisibility(View.INVISIBLE);
        }
    }

    @Override
    public int getItemCount() {
        return postsModels.size();
    }

    class posts extends RecyclerView.ViewHolder {

        @BindView(R.id.linear_layout)
        LinearLayout linear_layout;
        @BindView(R.id.frame_pink)
        FrameLayout frame_pink;
        @BindView(R.id.img_profile)
        CircleImageView img_profile;
        @BindView(R.id.txt_word)
        TextViewFont txt_word;
        @BindView(R.id.txt_id)
        TextViewFont txt_id;
        @BindView(R.id.txt_description)
        TextViewFont txt_description;

        @OnClick(R.id.linear_layout)
        public void onClick() {
            lastCheckedPosition = getAdapterPosition();
            notifyDataSetChanged();
        }

        public posts(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }

    }
}

public abstract class EndlessRecyclerViewScrollListener extends RecyclerView.OnScrollListener {
    // The minimum amount of items to have below your current scroll position
    //    // before loading more.
    private int visibleThreshold = 5;
    // The current offset index of data you have loaded
    private int currentPage = 0;
    // The total number of items in the dataset after the last load
    private int previousTotalItemCount = 0;
    // True if we are still waiting for the last set of data to load.
    private boolean loading = true;
    // Sets the starting page index
    private int startingPageIndex = 0;

    RecyclerView.LayoutManager mLayoutManager;

    public EndlessRecyclerViewScrollListener(LinearLayoutManager layoutManager) {
        this.mLayoutManager = layoutManager;
    }

    public EndlessRecyclerViewScrollListener(GridLayoutManager layoutManager) {
        this.mLayoutManager = layoutManager;
        visibleThreshold = visibleThreshold * layoutManager.getSpanCount();
    }

    public EndlessRecyclerViewScrollListener(StaggeredGridLayoutManager layoutManager) {
        this.mLayoutManager = layoutManager;
        visibleThreshold = visibleThreshold * layoutManager.getSpanCount();
    }

    public int getLastVisibleItem(int[] lastVisibleItemPositions) {
        int maxSize = 0;
        for (int i = 0; i < lastVisibleItemPositions.length; i++) {
            if (i == 0) {
                maxSize = lastVisibleItemPositions[i];
            }
            else if (lastVisibleItemPositions[i] > maxSize) {
                maxSize = lastVisibleItemPositions[i];
            }
        }
        return maxSize;
    }

    // This happens many times a second during a scroll, so be wary of the code you place here.
    // We are given a few useful parameters to help us work out if we need to load some more data,
    // but first we check if we are waiting for the previous load to finish.
    @Override
    public void onScrolled(RecyclerView view, int dx, int dy) {
        int lastVisibleItemPosition = 0;
        int totalItemCount = mLayoutManager.getItemCount();

        if (mLayoutManager instanceof StaggeredGridLayoutManager) {
            int[] lastVisibleItemPositions = ((StaggeredGridLayoutManager) mLayoutManager).findLastVisibleItemPositions(null);
            // get maximum element within the list
            lastVisibleItemPosition = getLastVisibleItem(lastVisibleItemPositions);
        } else if (mLayoutManager instanceof GridLayoutManager) {
            lastVisibleItemPosition = ((GridLayoutManager) mLayoutManager).findLastVisibleItemPosition();
        } else if (mLayoutManager instanceof LinearLayoutManager) {
            lastVisibleItemPosition = ((LinearLayoutManager) mLayoutManager).findLastVisibleItemPosition();
        }

        // If the total item count is zero and the previous isn't, assume the
        // list is invalidated and should be reset back to initial state
        if (totalItemCount < previousTotalItemCount) {
            this.currentPage = this.startingPageIndex;
            this.previousTotalItemCount = totalItemCount;
            if (totalItemCount == 0) {
                this.loading = true;
            }
        }
        // If it’s still loading, we check to see if the dataset count has
        // changed, if so we conclude it has finished loading and update the current page
        // number and total item count.
        if (loading && (totalItemCount > previousTotalItemCount)) {
            loading = false;
            previousTotalItemCount = totalItemCount;
        }

        // If it isn’t currently loading, we check to see if we have breached
        // the visibleThreshold and need to reload more data.
        // If we do need to reload some more data, we execute onLoadMore to fetch the data.
        // threshold should reflect how many total columns there are too
        if (!loading && (lastVisibleItemPosition + visibleThreshold) > totalItemCount) {
            currentPage++;
            onLoadMore(currentPage, totalItemCount, view);
            loading = true;
        }
    }

    // Call this method whenever performing new searches
    public void resetState() {
        this.currentPage = this.startingPageIndex;
        this.previousTotalItemCount = 0;
        this.loading = true;
    }

    // Defines the process for actually loading more data based on page
    public abstract void onLoadMore(int page, int totalItemsCount, RecyclerView view);