zhibo/android-app/app/src/main/java/com/example/livestreaming/FriendRequestAdapter.java

package com.example.livestreaming;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.ListAdapter;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;

import de.hdodenhof.circleimageview.CircleImageView;

/**
 * 好友请求列表适配器
 */
public class FriendRequestAdapter extends ListAdapter<FriendRequestItem, FriendRequestAdapter.ViewHolder> {

    public interface OnRequestActionListener {
        void onAccept(FriendRequestItem item, int position);
        void onReject(FriendRequestItem item, int position);
    }

    private OnRequestActionListener actionListener;

    public FriendRequestAdapter() {
        super(DIFF_CALLBACK);
    }

    public void setOnRequestActionListener(OnRequestActionListener listener) {
        this.actionListener = listener;
    }

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

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

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        FriendRequestItem item = getItem(position);
        if (item == null) return;

        holder.name.setText(item.getNickname() != null ? item.getNickname() : "未知用户");
        holder.message.setText(item.getDisplayMessage());

        // 加载头像
        if (item.getAvatarUrl() != null && !item.getAvatarUrl().isEmpty()) {
            Glide.with(holder.avatar.getContext())
                    .load(item.getAvatarUrl())
                    .placeholder(R.drawable.ic_account_circle_24)
                    .error(R.drawable.ic_account_circle_24)
                    .into(holder.avatar);
        } else {
            holder.avatar.setImageResource(R.drawable.ic_account_circle_24);
        }

        holder.acceptButton.setOnClickListener(v -> {
            if (actionListener != null) {
                actionListener.onAccept(item, holder.getAdapterPosition());
            }
        });

        holder.rejectButton.setOnClickListener(v -> {
            if (actionListener != null) {
                actionListener.onReject(item, holder.getAdapterPosition());
            }
        });
    }

    static class ViewHolder extends RecyclerView.ViewHolder {
        CircleImageView avatar;
        TextView name;
        TextView message;
        TextView acceptButton;
        TextView rejectButton;

        ViewHolder(@NonNull View itemView) {
            super(itemView);
            avatar = itemView.findViewById(R.id.avatar);
            name = itemView.findViewById(R.id.name);
            message = itemView.findViewById(R.id.message);
            acceptButton = itemView.findViewById(R.id.acceptButton);
            rejectButton = itemView.findViewById(R.id.rejectButton);
        }
    }
}