channelName = "sms";
thumbnailUrls = new HashMap<Integer,String>();
thumbnailSizes = new HashMap<Integer,DimensionModel>();
for (int i = 0; i < thumbnailSideLengths.length; i++){
thumbnailUrls.put(i,photoUrl + "?s=" + thumbnailSideLengths[i]);
thumbnailSizes.put(i,new DimensionModel(thumbnailSideLengths[i],thumbnailSideLengths[i]));
}
}
if (audioFiles.size() > 0)
audioUrls = audioFiles.toArray(new String[]{});