1、新建一个适配器类继承RecyclerView.Adapter泛型是内部类的ViewHolder,然后重写
onCreateViewHolder(返回一个新的ViewHolder对象)、onBindViewHolder(绑定ViewHolder)、getItemCount(此方法返回子项目的条数)方法。
2、新建内部类ViewHolder继承RecyclerView.ViewHolder重写构造方法,用于存储实例对象,加强性能。
private List<Menu> list; private Context context; public ListAdapter(List<Menu> list, Context context) { this.list = list; this.context = context; } static class ViewHolder extends RecyclerView.ViewHolder{ ImageView imageView; TextView textView; public ViewHolder(View itemView) { super(itemView); imageView=itemView.findViewById(R.id.recycler_view_img); textView=itemView.findViewById(R.id.recycler_view_text); } } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { return new ViewHolder(LayoutInflater.from(context).inflate(R.layout.recyclerview_layout,null)); } @Override public void onBindViewHolder(ViewHolder holder, int position) { Menu menu=list.get(position); holder.imageView.setImageResource(menu.getIcon()); holder.textView.setText(menu.getName()); } @Override public int getItemCount() { return list!=null?list.size():0; } }