java - 安卓。 java 。回收适配器

Question

我在一个布局中有两个不同的卡片 View 。我需要将最新消息添加到一个卡片 View 中，其余的则添加到另一个卡片 View 中。例如，在图像上

MyRecyclerAdapter代码

public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.CustomViewHolder> {
    private List<FeedItem> feedItemList;
    private Context mContext;

    public MyRecyclerAdapter(Context context, List<FeedItem> feedItemList) {
        this.feedItemList = feedItemList;
        this.mContext = context;
    }

    @Override
    public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_row, null);
        CustomViewHolder viewHolder = new CustomViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(CustomViewHolder customViewHolder, int i) {
        FeedItem feedItem = feedItemList.get(i);

        //Download image using picasso library
        Picasso.with(mContext).load(feedItem.getThumbnail())
                .error(R.drawable.placeholder)
                .placeholder(R.drawable.placeholder)
                .into(customViewHolder.imageView);

        //Setting text view title
        customViewHolder.textView.setText(Html.fromHtml(feedItem.getTitle()));

        View.OnClickListener clickListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                CustomViewHolder holder = (CustomViewHolder) view.getTag();
                int position = holder.getPosition();

                FeedItem feedItem = feedItemList.get(position);
                Toast.makeText(mContext, feedItem.getTitle(), Toast.LENGTH_SHORT).show();
            }
        };

        //Handle click event on both title and image click
        customViewHolder.textView.setOnClickListener(clickListener);
        customViewHolder.imageView.setOnClickListener(clickListener);

        customViewHolder.textView.setTag(customViewHolder);
        customViewHolder.imageView.setTag(customViewHolder);
    }

    @Override
    public int getItemCount() {
        return (null != feedItemList ? feedItemList.size() : 0);
    }

    public class CustomViewHolder extends RecyclerView.ViewHolder {
        protected ImageView imageView;
        protected TextView textView;

        public CustomViewHolder(View view) {
            super(view);
            this.imageView = (ImageView) view.findViewById(R.id.thumbnail);
            this.textView = (TextView) view.findViewById(R.id.title);
        }
    }
}

Answer 1

如果我在你身边，我会使用的方法来完成你在图片中发布的内容是覆盖 getItemViewType并且有两种不同类型的 ViewHolder，一种用于 header，一种用于大图像，另一种用于小行。 onBindViewHolder 获取类型作为参数。在你的例子中是 int i。