Presentation I gave at the Dutch CocoaHeadsNL meetup of februari

Annimations in the Dutch ING banking app.

Transcript

1. Animations in the
   ING Banking App Dutch CocoaHeads 19-feb-2013
2. Agenda
3. ING Mobile Banking
4. Animations in iOS • Lots of small animations • Push VC on a UINavigationController
5. Why you need animations • To be consistent with the platform • Teaches your users • Movement attracts eyes, requests focus on screen items you want the user to focus on • People like to see where their stuff is going
6. We’re in luck • iOS has Core Animation • Core Animation actually is a high performance compositing engine • It’s powerful, yet easy to use. Most animations you can just “drop in” between your normal program flow.
7. Architecture UIKit Core Animation Open GL ES Hardware Core Graphics
8. Layers • Each View has a backing CALayer (layer property) • It’s similar to UIViews • addSubLayer • layoutSubLayers
9. Implicit animations • Most CALayer properties can be animated • Changing property triggers implicit animation • Duration 0.25s, linear interpolation • Multiple changes during one Runloop cycle get batched into one transaction
10. Demo/Code • What CALayers compositing and implicit animations can do
11. There’s (lots) more • Explicit Animations • View based animations • CATiming
 (don’t chain animations with completion blocks)
12. Questions? • Code @ GitHub
 https://github.com/jeroenleenarts/implicit-bar-sample