RecyclerView的適配器實現方式

RecyclerView的適配器實現方式主要有兩種：繼承RecyclerView.Adapter類和使用ListAdapter類。

1. 繼承RecyclerView.Adapter類：

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

    private List<String> mData;

    public MyAdapter(List<String> data) {
        this.mData = data;
    }

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

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        String item = mData.get(position);
        holder.bind(item);
    }

    @Override
    public int getItemCount() {
        return mData.size();
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
        }

        public void bind(String item) {
            textView.setText(item);
        }
    }
}

2. 使用ListAdapter類：

public class MyAdapter extends ListAdapter<String, MyAdapter.MyViewHolder> {

    public MyAdapter() {
        super(DIFF_CALLBACK);
    }

    private static final DiffUtil.ItemCallback<String> DIFF_CALLBACK = new DiffUtil.ItemCallback<String>() {
        @Override
        public boolean areItemsTheSame(@NonNull String oldItem, @NonNull String newItem) {
            return oldItem.equals(newItem);
        }

        @Override
        public boolean areContentsTheSame(@NonNull String oldItem, @NonNull String newItem) {
            return oldItem.equals(newItem);
        }
    };

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

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        String item = getItem(position);
        holder.bind(item);
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
        }

        public void bind(String item) {
            textView.setText(item);
        }
    }
}

以上是兩種常見的RecyclerView適配器實現方式，開發(fā)者可以根據需求選擇適合自己的方式進行實現。