iOSDev UK: Animation for Serious Apps

Neil Taylor, Aberystwyth University, @digidol

• CALayer is not actually the view — it’s the model
• Old-style UIView animations are now discouraged — start to use blocks instead
  • block-style also allows you to add further animations on completion
• CALayer animation is slightly different
  • animate position, not centre
  • bounds, not frame
  • values are animated, not changed
  • CAAnimation setFromValue:/setToValue:
• Keyframe animation lets you animate across a complex path
  • Core Animation will calculate intermediate frames
  • e.g. shopping cart items thrown into a cart at the bottom of the screen
• Other bits
  • can have transactions to tie animations together
• More useful references in slides…