I love the app switch animation that I got when I upgraded my 3GS to iOS 4. It makes it seem faster, even though the hardware is the same.
If you have registered as a developer with Apple, check out session 103 "iPad and iPhone User Interface Design" by Jay Capela and John Geleynse. John is the Director, Technology Evangelism and User Experience Evangelist at Apple.
Session 103 was one of the best at WWDC10. Geleynse talks about how hard it was to decide how to animate things in Keynote for iPad. For example, how long it took them to come up with the right animation for rearranging slides in the navigator - they ended up with a little "bump" animation as you moved a slide up and down.
While you're at it, Session 104 "Designing Apps with Scroll Views" shows you how precisely Apple engineers their own UI code to be efficient and elegant.
"Designing Apps with Scroll Views" is a fantastic session, and anyone using scroll views in their app should watch it. Before watching it, I never knew how much I was missing in terms of how I was implementing them.
If you have registered as a developer with Apple, check out session 103 "iPad and iPhone User Interface Design" by Jay Capela and John Geleynse. John is the Director, Technology Evangelism and User Experience Evangelist at Apple.
Session 103 was one of the best at WWDC10. Geleynse talks about how hard it was to decide how to animate things in Keynote for iPad. For example, how long it took them to come up with the right animation for rearranging slides in the navigator - they ended up with a little "bump" animation as you moved a slide up and down.
http://developer.apple.com/videos/wwdc/2010/
While you're at it, Session 104 "Designing Apps with Scroll Views" shows you how precisely Apple engineers their own UI code to be efficient and elegant.