在RecyclerView和方法中使用CountDownTimers

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<Item> itemList;

    public MyAdapter(List<Item> itemList) {
        this.itemList = itemList;
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        // 绑定数据
        Item item = itemList.get(position);
        holder.textView.setText(item.getName());
        holder.startCountDown(item.getRemainingTime());
    }

    @Override
    public void onViewRecycled(@NonNull ViewHolder holder) {
        // 取消倒计时
        holder.cancelCountDown();
    }

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

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

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

        public void startCountDown(long remainingTime) {
            countDownTimer = new CountDownTimer(remainingTime, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {
                    // 更新倒计时显示
                    textView.setText(formatTime(millisUntilFinished));
                }

                @Override
                public void onFinish() {
                    // 倒计时结束处理
                    textView.setText("倒计时结束");
                }
            }.start();
        }

        public void cancelCountDown() {
            if (countDownTimer != null) {
                countDownTimer.cancel();
            }
        }

        private String formatTime(long millis) {
            // 格式化时间
            // ...
        }
    }
}