RecycleView Adapter

=> RecycleView Adapter 예제
/**
 * Created by cscho on 2015-08-21.
 */
public class ThemeListAdapter extends RecyclerView.Adapter<ThemeListAdapter.ThemeHolder> {
    private static final String TAG = "ThemeListAdapter";
    private final LayoutInflater mLayoutInflater;
    private DisplayImageOptions options;
    private Context mContext;
    private String mSystemClock;
    private ArrayList<ThemeListItem> mThemeList = null;

    private SimpleImageLoadingListener mImageLoadingListener = new SimpleImageLoadingListener() {
        @Override
        public void onLoadingStarted(String imageUri, View view) {
        }

        @Override
        public void onLoadingCancelled(String imageUri, View view) {
            super.onLoadingCancelled(imageUri, view);
        }

        @Override
        public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
            String message = null;
            switch (failReason.getType()) {
                case IO_ERROR:
                    message = "Input/Output error";
                    break;
                case DECODING_ERROR:
                    message = "Image can't be decoded";
                    break;
                case NETWORK_DENIED:
                    message = "Downloads are denied";
                    break;
                case OUT_OF_MEMORY:
                    message = "Out Of Memory error";
                    break;
                case UNKNOWN:
                    message = "Unknown error";
                    break;
            }
            Toast.makeText(view.getContext(), message, Toast.LENGTH_SHORT).show();
        }
    };

    public static class ThemeHolder extends RecyclerView.ViewHolder {
        CSRoundedImageView civ_background;
        CSRoundedImageView civ_gradeffect;
        int postion;
        TextView tv_title;
        TextView tv_themename;
        TextView tv_storycount;

        public ThemeHolder(View view) {
            super(view);

            civ_background = (CSRoundedImageView)view.findViewById(R.id.civ_background);
            civ_gradeffect = (CSRoundedImageView)view.findViewById(R.id.civ_gradeffect);
            tv_title = (TextView)view.findViewById(R.id.tv_title);
            tv_themename = (TextView)view.findViewById(R.id.tv_themename);
            tv_storycount = (TextView)view.findViewById(R.id.tv_storycount);
        }
    }

    public ThemeListAdapter(Context context) {
        mContext = context;
        mLayoutInflater = LayoutInflater.from(context);
        mThemeList = new ArrayList<ThemeListItem>();

        options = new DisplayImageOptions.Builder()
                .resetViewBeforeLoading(true)
                .delayBeforeLoading(500)
                .cacheOnDisk(true)
//                .imageScaleType(ImageScaleType.EXACTLY)
                .bitmapConfig(Bitmap.Config.RGB_565)
                .considerExifParams(true)
                .displayer(new FadeInBitmapDisplayer(300))
                .build();
    }

    public void setSystemClock(String clock) {
        mSystemClock = clock;
    }

    @Override
    public ThemeHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        final View view = mLayoutInflater.inflate(R.layout.row_theme_frame, parent, false);
        return new ThemeHolder(view);
    }

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

    @Override
    public void onBindViewHolder(ThemeHolder holder, int position) {
        final View itemView = holder.itemView;
        ThemeListItem item = getItem(position);
        CSLog.v(TAG, "postion = " + position + " imageurl = " + item.imgurl);
        int size = 0;
        if ( item.type == 1 ) {
            size = mContext.getResources().getDimensionPixelSize(R.dimen.theme_normal_size);
        } else {
            size = mContext.getResources().getDimensionPixelSize(R.dimen.theme_long_size);
        }

        final StaggeredGridLayoutManager.LayoutParams lp = (StaggeredGridLayoutManager.LayoutParams) itemView.getLayoutParams();
        lp.height = size;
        itemView.setLayoutParams(lp);

        holder.setIsRecyclable(false);
        holder.tv_title.setText(Html.fromHtml(item.sub_title));
        holder.tv_themename.setText(item.title);
        holder.tv_storycount.setText(String.valueOf(item.total_count) + mContext.getResources().getString(R.string.home_theme_storyunit));

        ImageLoader.getInstance().displayImage(item.imgurl, holder.civ_background, options, mImageLoadingListener);
    }

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

    public void addAll(ArrayList<ThemeListItem> list) {
        mThemeList.addAll(list);
        notifyDataSetChanged();
    }

    public ThemeListItem getItem(int position) {
        return mThemeList.get(position);
    }

    public void clear() {
        mThemeList.clear();
        notifyDataSetChanged();
    }
}