Custom View Controller Transitions in Landscape

iOS 7’s custom transitions are great — until you rotate the device. A breakdown of the landscape bugs, the hacky workarounds that don’t quite hold up, and why we went back to view controller containment.

Premature Completion: An Embarrassing Problem

Core Animation runs your completion block early if it doesn’t find any animations. Rude. Includes a sample project to poke at the behavior yourself and avoid hours of confused debugging.

CFTree Is Leaking It’s Children

CFTree’s docs say releasing the root destroys its children. The docs lie. A late-night debugging adventure with proof via Instruments, plus a manual teardown workaround.