Recyclerview点指示器android

Question

我有这样的RecyclerView。我想它只显示最多8个点。但是在ArrayList中有更多8个寻呼机可供更改。

我想当我站在8时，我将页面更改为9，显示数字的第8个点是9？它将变为10,11 ......

这是我的适配器

public RecyclerViewAdapter(Context context, int layout, int number, int viewpagerposition ){
    this.context = context;
    this.layout = layout;
    this.number = number;
    this.viewpagerposition = viewpagerposition;
    this.numberpage = numberpage;
}

@Override
public RecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(layout, parent, false);
    RecyclerViewAdapter.ViewHolder viewHolder = new RecyclerViewAdapter.ViewHolder(view);
    return viewHolder;
}

@Override
public void onBindViewHolder(RecyclerViewAdapter.ViewHolder holder, int position) {
    if(position == viewpagerposition){
        holder.itemView.setScaleX(1f);
        holder.itemView.setScaleY(1f);
        holder.txtrvPager.setText((position+1)+"");
        holder.txtrvPager.setBackgroundResource(R.drawable.rvpager_activity);
    }
    else{
        holder.itemView.setScaleX(0.5f);
        holder.itemView.setScaleY(0.5f);
        holder.txtrvPager.setBackgroundResource(R.drawable.rvpager_inactivity);
    }
    if(viewpagerposition > 8){

    }
}

@Override
public int getItemCount() {
    if(number > 8){
        return 8;
    }else{
        return number;
    }

}

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView txtrvPager;
    public ViewHolder(View itemView) {
        super(itemView);
        txtrvPager = (TextView) itemView.findViewById(R.id.txtrvPager);
    }
}

Answer 1

在您的代码中，getItemCount()方法返回列表大小，只需将其更改为：

@Override
public int getItemCount() {
if(list.size()-1> 8){
    return 8;
}else{
    return list.size();
}

}

快乐的编码!!