Show images on tweet_items making sure to size them to the right aspect ratio.
Change to fitXY so you can always see the whole image. Sometimes the ImageView does not get sized properly.
Fix image aspect ratio in tweet items. Remove all onPreDraw code and fix tweet_item XML.
Add ActiveAndroid. For every fromJSON call, save user, mediaItem, and tweet. On start up, retrieve from local SQL to populate list the first time. set lowest and highest tweet ids for use when making calls to Twitter.