Autolayout Is Hell on Earth

September 12, 2013

I believe that every iOS developer is already aware of Apple’s new directive forbidding any apps using frame to be submitted to the Appstore when the new iOS 7 goes public. That means that ALL new app will have be developed using this tool created by the son of a devil called autolayout.

Anyone that has already used autolayout knows that margin, width, height and other properties are calculated in runtime, therefore, they consume sometimes unnecessary CPU time. For some inescrutable reason, Apple decided to create this new concept from scratch to ease working with different sized screens, while they could easily reuse existing CSS concepts like marginpadding, among others. In addition to being extremely confusing (a UIView's margin constraints are in its superview), having a pitiful syntax  (“V:|-(-5)-[view1]-(>=10)-[view2]-(912837)-|”)autolayout also makes everything slow.

Protip: if you’re configuring your coinstraints via code, never forget seting self.translatesAutoresizingMaskIntoConstraints = NO in your view. It took me a couple of coffee cups to realise this was the reason why my  constraints weren’t being executing along with [self layoutIfNeeded].

I recently had to work with a UICollectionView and the scroll was getting really laggy. Anytime a new cell was loaded, the framerate dropped. After spending a few hours trying to find the root of the problem with a couple of friends (we even considered the problem being the SDK’s dequeue thanks to  Profiler) some inspired insight hit us and we decided to disable autolayout on the UICollectionViewCell's xib and everything flowed like a beautiful stream under the morning sunlight of tropical woods. So let us analise what happened: Apple created a new concept, from the grounds, that theoretically would solve all problems when working with screens of different sizes, but this devilish concept is composed of runtime calculated values that ruin the app’s smoothness. Yep, it gets hard to work happily…

This view that is the UICollectionView's cell will not have autolayout. Nobody knows what will happen when we submit the app to the Appstore and we sincerely hope that Apple doesn’t mind this view that, although is not explicitly using frames, also is not configured to accept autolayout.

I’m yet to find an iOS developer that has nothing to complain about this weird invention, but, as usual, Apple’s “this is what we want, so deal with it” policy doesn’t give us any alternatives. Instead of easing developers’ work, they’re making our daily lives every more difficult while Android scores another point Apple is walking backwards.

Bugreport 101

> This post is a translation from Portuguese, originally written to the [equinociOS]( …… Continue reading