如何创建具有多个视图类型的RecyclerView

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如何创建具有多个视图类型的RecyclerView

来自使用RecyclerView创建动态列表：

当我们创建一个RecyclerView.Adapter时，我们必须指定绑定到适配器的ViewHolder。

public class MyAdapter extends RecyclerView.Adapter {
    private String[] mDataset;
    public MyAdapter(String[] myDataset) {
        mDataset = myDataset;
    }
    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;
        public ViewHolder(TextView v) {
            super(v);
            mTextView = v;
        }
    }
    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.some_layout, parent, false);
        //findViewById...
        ViewHolder vh = new ViewHolder(v);
        return vh;
    }
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.mTextView.setText(mDataset[position]);
    }
    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}

是否可以创建多个视图类型的RecyclerView？

admin 更改状态以发布 2023年5月22日
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2 答案

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输出内容缺失

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是的，这是有可能的。只需实现getItemViewType()函数，同时注意在onCreateViewHolder()函数中的viewType参数。

所以，您可以这样做：

public class MyAdapter extends RecyclerView.Adapter {
    class ViewHolder0 extends RecyclerView.ViewHolder {
        ...
        public ViewHolder0(View itemView){
        ...
        }
    }
    class ViewHolder2 extends RecyclerView.ViewHolder {
        ...
        public ViewHolder2(View itemView){
        ...
    }
    @Override
    public int getItemViewType(int position) {
        // Just as an example, return 0 or 2 depending on position
        // Note that unlike in ListView adapters, types don't have to be contiguous
        return position % 2 * 2;
    }
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         switch (viewType) {
             case 0: return new ViewHolder0(...);
             case 2: return new ViewHolder2(...);
             ...
         }
    }
    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
        switch (holder.getItemViewType()) {
            case 0:
                ViewHolder0 viewHolder0 = (ViewHolder0)holder;
                ...
                break;
            case 2:
                ViewHolder2 viewHolder2 = (ViewHolder2)holder;
                ...
                break;
        }
    }
}

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