PlaylistStackAdapter.java

package com.wwe.universe.ui.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.wwe.universe.R;
import com.wwe.universe.data.model.Video;

import java.util.List;
import java.util.Locale;



public class PlaylistStackAdapter extends ArrayAdapter<Video> {

    private static final List<Video> mVideos; 
    private final LayoutInflater mInflater;

    public PlaylistStackAdapter(List<Video> videos, Context context) {
        super(context, R.layout.item_playlist_stack, videos);
        PlaylistStackAdapter.mVideos = videos;
        mInflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return PlaylistStackAdapter.mVideos.size();
    }

    @Override
    public Video getItem(int position) {
        return PlaylistStackAdapter.mVideos.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @NonNull
    @Override
    public View getView(int position, View convertView, @NonNull ViewGroup parent) {
        Video video = mVideos.get(position);
        ViewHolder holder;
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.item_playlist_stack, parent, false);
            holder = new ViewHolder(convertView);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        Glide.with(convertView.getContext()).load(video.getThumbnailUrl()).into(holder.videoImage);
        holder.videoDuration.setText(formatDuration(video.getDuration()));

        return convertView;
    }

    private String formatDuration(long duration) {
        int seconds = (int) duration % 60;
        int minutes = (int) duration / 60;
        return String.format(Locale.US, "%d:%02d", minutes, seconds);
    }

    public static class ViewHolder {
        final ImageView videoImage;
        final TextView videoDuration;

        ViewHolder(View view) {
            videoImage = (ImageView) view.findViewById(R.id.video_image);
            videoDuration = (TextView) view.findViewById(R.id.video_duration);
        }
    }
}