Get the screen width. @param context @return the screen width

Handle an external scroll and render the image by switching it by a distance @param distY the distance from the top

Stores an image on the storage @param image the image to store. @param pictureFile the file in which it must be stored

Get the screen height. @param context @return the screen height

Draws the view if the adapted image is not null

Listen to the list scroll. This is where magic happens ;)

Top crop scale type