recyclerview点击事件

在RecyclerView中实现点击事件有两种方式：

1. 在onCreateViewHolder中注册点击事件：

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<String> mData;
    private OnItemClickListener mListener;

    public interface OnItemClickListener {
        void onItemClick(int position);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        mListener = listener;
    }

    // ...

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
        final ViewHolder viewHolder = new ViewHolder(view);
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mListener != null) {
                    int position = viewHolder.getAdapterPosition();
                    mListener.onItemClick(position);
                }
            }
        });
        return viewHolder;
    }

    // ...

    public static class ViewHolder extends RecyclerView.ViewHolder {
        // ...

        public ViewHolder(View itemView) {
            super(itemView);
            // ...
        }
    }
}

2. 定义点击动作：

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<String> mData;

    public interface OnItemClickListener {
        void onItemClick(int position);
    }

    // ...

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

    @Override
    public void onBindViewHolder(final ViewHolder holder, final int position) {
        // ...
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 处理点击事件
            }
        });
    }

    // ...

    public static class ViewHolder extends RecyclerView.ViewHolder {
        // ...

        public ViewHolder(View itemView) {
            super(itemView);
            // ...
        }
    }
}