如何添加一个水平RecyclerView列表项内 [英] How do I add a horizontal RecyclerView inside a list item

问题描述

执行的任务，是我需要创建一个无限滚动列表将滚动横向和纵向。

有关这就是我想要做的是，我已经集成水平 RecyclerView 内的垂直的ListView 项目。这是正确的方式去了解？我曾尝试过其他解决方案，但滚动有一些问题。

现在的问题是，当我尝试实施 RecyclerView 列表项里面的物品没有得到填充。

 公共类Horizo​​ntalAdapter扩展RecyclerView.Adapter＆LT; Horizo​​ntalAdapter.ViewHolder＆GT; {

名单＆LT; ImageMedia＆GT; imageMedia;
保护Constants.IMAGE_SIZE IMAGE_SIZE = Constants.IMAGE_SIZE.Small;
私人上下文的背景下;


    公共Horizo​​ntalAdapter（上下文的背景下）{
        超（）;
        setHasStableIds（真正的）;
        this.context =背景;
    }

    @覆盖
    公共ViewHolder onCreateViewHolder（ViewGroup中的ViewGroup，INT viewType）{
        返回新ViewHolder（LayoutInflater.from（viewGroup.getContext（））膨胀（R.layout.horizo​​ntal_item，ViewGroup中，FALSE））;
    }

    保护ImageMedia的getItem（INT位置）{
        返回imageMedia.get（位置）;
    }

    @覆盖
    公共无效onBindViewHolder（Horizo​​ntalAdapter.ViewHolder viewHolder，int i）以{
        viewHolder.setMedia（的getItem（一））;
    }

    @覆盖
    公众诠释getItemCount（）{
        返程（imageMedia = NULL imageMedia.size（）：？0）;
    }

    @覆盖
    公共无效onViewRecycled（ViewHolder持有者）{
        super.onViewRecycled（保持器）;
    }

    @覆盖
    众长getItemId（INT位置）{
        返回imageMedia.get（位置）.getId（）;
    }

    //数据送过来更新
    公共无效setMovies（名单＆LT;电影＆GT;电影）{

            如果（电影！= NULL）{
                imageMedia =（名单＆LT; ImageMedia＆GT;）（名单＆LT;＆GT;）电影;
            } 其他 {

            }
            notifyDataSetChanged（）;
    }


    公共类ViewHolder扩展RecyclerView.ViewHolder实现View.OnClickListener {
        ImageCar​​dView ImageView的;
        ImageMedia imageMedia;

        公共ViewHolder（查看ItemView控件）{
            超（ItemView控件）;

            ImageView的=（ImageCar​​dView）itemView.findViewById（R.id.imageView）;
            // TODO：删除此的onclick

            itemView.setOnClickListener（新View.OnClickListener（）{
                @覆盖
                公共无效的onClick（视图v）{
                    //意图去相应的活动
                }
            }）;
        }

        公共无效setMedia（ImageMedia imageMedia）{
            this.imageMedia = imageMedia;

            imageView.loadImage（imageMedia，IMAGE_SIZE）;

        }
    }
}
 

解决方案

据我的理解，当系统措施清单项目出现问题。

速战速决是要给水平 RecyclerView A硬codeD的高度，但因为它不是一个好办法，我继续狩猎，发现了另一个方法。

这个答案是有帮助的，我使用的库贴在那里。

按照以下步骤操作：

1. 通过添加到您摇篮文件中导入库：

    编译org.solovyev.android.views：线性布局管理器：0.5@aar
    

2. 设置布局管理象下面这样：

     mRecyclerView.setLayoutManager（新org.solovyev.android.views.llm.LinearLayoutManager（背景下，LinearLayoutManager.HORIZONTAL，FALSE））;`
    

3. 确保该观点被夸大水平 RecyclerView 是 RelativeLayout的，因为其他的LinearLayout 不支持这一点。
4. 运行项目，见证神奇！

The task of implementation is I need to create an infinite scrollable list which will scroll both horizontally and vertically.

For this what I'm trying to do is that I have integrated a horizontal RecyclerView inside a vertical ListView item. Is this the right way to go about? I have tried other solutions but the scrolling has some issues.

The problem is that when I try to implement the RecyclerView inside a list item the items do not get populated.

public class HorizontalAdapter extends RecyclerView.Adapter<HorizontalAdapter.ViewHolder> {

List<ImageMedia> imageMedia;
protected Constants.IMAGE_SIZE image_size = Constants.IMAGE_SIZE.Small;
private Context context;


    public HorizontalAdapter(Context context) {
        super();
        setHasStableIds(true);
        this.context = context;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        return new ViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.horizontal_item, viewGroup, false));
    }

    protected ImageMedia getItem(int position) {
        return imageMedia.get(position);
    }

    @Override
    public void onBindViewHolder(HorizontalAdapter.ViewHolder viewHolder, int i) {
        viewHolder.setMedia(getItem(i));
    }

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

    @Override
    public void onViewRecycled(ViewHolder holder) {
        super.onViewRecycled(holder);
    }

    @Override
    public long getItemId(int position) {
        return imageMedia.get(position).getId();
    }

    //Data gets updated here
    public void setMovies(List<Movie> movie) {

            if (movie != null) {
                imageMedia = (List<ImageMedia>) (List<?>) movie;
            } else {

            }
            notifyDataSetChanged();
    }


    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        ImageCardView imageView;
        ImageMedia imageMedia;

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

            imageView = (ImageCardView) itemView.findViewById(R.id.imageView);
            //TODO: remove this onclick

            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //Intent to go to the corresponding activity
                }
            });
        }

        public void setMedia(ImageMedia imageMedia) {
            this.imageMedia = imageMedia;

            imageView.loadImage(imageMedia, image_size);

        }
    }
}

解决方案

According to my understanding, the problem occurs when the system measures the list item.

The quick fix was to give horizontal RecyclerView a hard-coded height, but since it isn't a good way, I continued the hunt and found another way.

This answer was helpful and I used the library posted there.

Follow these steps:

1. Import the library by adding this to your gradle file:

   compile 'org.solovyev.android.views:linear-layout-manager:0.5@aar'
   

2. set the LayoutManager like below:

   mRecyclerView.setLayoutManager(new org.solovyev.android.views.llm.LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));`
   

3. make sure that the view being inflated in the horizontal RecyclerView is RelativeLayout because other LinearLayout doesn't support this.
4. run your project and witness the magic!

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