How to handle multiple countdown timers in ListView?

Question

I have a listview (with a custom list adapter), I need to display a countdown on every row.

For example, if my list contains 4 items, I will have 4 rows. At this po

Answer 1

Adapter class:-

---

public class CountdownAdapter extends RecyclerView.Adapter { ArrayList mList; Context mContext;

public CountdownAdapter(ArrayList mList, Context mContext) {
    this.mList = mList;
    this.mContext = mContext;
}

public class ViewHolder extends RecyclerView.ViewHolder {
    CountDownTimer timerCount;
    TextView mCountDownTxt;

    public ViewHolder(View convertView) {
        super(convertView);
        mCountDownTxt = (TextView)convertView.findViewById(R.id.countdown_text);
    }
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    return null;
}

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
    if(holder.timerCount==null) {
        holder.timerCount = new CountDownTimer(mList.get(position), 1000) {
            @Override
            public void onTick(long millis) {
                String hms = String.format("%02d:%02d",  TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
                holder.mCountDownTxt.setText(hms);
            }

            @Override
            public void onFinish() {

            }
        };
    }
    holder.mCountDownTxt.setVisibility(View.VISIBLE);
    holder.timerCount.start();
}

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

}