iOS Programming: The Big Nerd Ranch Guide

Keyframe Animations

The animations you have added so far have been basic animations; they animate from one value to another value. If you want to animate a view’s properties through more than two values, you use a keyframe animation. A keyframe animation can be made up of any number of individual keyframes (Figure 27.3). You can think of keyframe animations as multiple basic animations going back to back.

Figure 27.3  Keyframe animation

Keyframe animations are set up similarly to basic animations, but each keyframe is added separately. To create a keyframe animation, use the animateKeyframesWithDuration:delay:options:animations:completion: ...