#1: Basic drag-and-scroll (demo, explanation).
No momentum effect yet, just a plain scroll view.
#2: Flick list with momentum (demo, explanation).
Smooth acceleration and deceleration.
#3: Snap-to-grid flick list (demo, explanation).
Inertial deceleration to stop at the right position.
#4: Horizontal swipe to browse photos (demo, explanation).
Parallax effect included.
#5: Coming soon.