RecyclerView list 限制在一个片段，没有限制另一个片段

Question

嗨，我想在两个不同的片段中创建一个回收器视图，其中一个片段具有限制回收器视图列表，仅显示 4 个列表，另一个片段显示所有列表项，提前致谢。 主类代码，

private void populatelist() {

    List<reviewModel> reviewModelList = new ArrayList<>();

    for (int i = 1; i < 20; i++) {
        int imges = R.drawable.ic_userlogin;
        String names = "User Name is " + i;
        String dates = "New Dates is " + i;
        String detail = "User details about is " + i;

        reviewModel models = new reviewModel(names, dates, detail, 4, imges);

        reviewModelList.add(models);
    }

    setupRecycle(reviewModelList);
}

private void setupRecycle(List<reviewModel> reviewModelList) {

    if (adaptOverView == null)
        adaptOverView = new reviewAdapt(this, 5);

    adaptOverView.setReviewList(reviewModelList);

    LinearLayoutManager layout = new LinearLayoutManager(this);
    layout.setSmoothScrollbarEnabled(true);
    recyclerOverView.setLayoutManager(layout);
    recyclerOverView.setHasFixedSize(true);
    recyclerOverView.setAdapter(adaptOverView);
}

适配器类代码，

private Context mContext;
private List<reviewModel> reviewList;

private int limit;

public void setReviewList(List<reviewModel> list){
    this.reviewList = list;
    this.notifyDataSetChanged();
}
public reviewAdapt(Context mContext, int limit) {
    this.mContext = mContext;
    this.limit = limit;
}

public reviewAdapt(Context mContext, List<reviewModel> reviewList, int limit) {
    this.mContext = mContext;
    this.reviewList = reviewList;
    this.limit = limit;
}

@NonNull
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

    View view = LayoutInflater.from(mContext).inflate(R.layout.review_design, parent, false);
    ViewHolder holder = new ViewHolder(view);
    return holder;
}

@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {

        if (position < limit) {
            reviewModel model = reviewList.get(position);

            Log.d("TAG", "onBindViewHolder_Limit: "+limit);
            Log.d("TAG", "onBindViewHolder_Position_Is_InLimit: "+position);
            holder.textViewName.setText(model.getName());
            holder.textViewDate.setText(model.getDate());
            holder.ratingBarRecycle.setRating(model.getRatingBar());
            holder.textViewDetails.setText(model.getDetails());
            holder.imageViewRecycle.setImageResource(model.getImg());
        }
}

@Override
public int getItemCount() {

        return reviewList.size();

}


public class ViewHolder extends RecyclerView.ViewHolder {
    TextView textViewName, textViewDate, textViewDetails;
    RatingBar ratingBarRecycle;
    ImageView imageViewRecycle;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);

        textViewName = itemView.findViewById(R.id.name_review);
        textViewDate = itemView.findViewById(R.id.date_review);
        textViewDetails = itemView.findViewById(R.id.details_review);
        ratingBarRecycle = itemView.findViewById(R.id.review_ratingsBar);
        imageViewRecycle = itemView.findViewById(R.id.profile_image);


    }


}
}

Answer 1

据我了解，您正在使用限制变量来限制片段的列表大小。但是您没有正确使用它。如果我没记错，请尝试限制适配器中的项目数，如下所示 -

@Override
public int getItemCount() {
    return limit;
}