CODEWITHSUNDEEP
iphoneobjective-ciosperformanceoptimization
xidew
xidew

Reputation: 421

How can I optimize my controllers so they load faster?

Most of the iOS apps I use are very responsive, when I tap on an element it goes to the next view right away. In my app, some of my view controllers take 0.5-1.0 second to load.

My code is all in the viewDidLoad method and I'm pretty sure that's the problem but I can't move anything out since I need every single element that I instantiate.

A solution I thought is to move all the work I do in viewDidLoad in a thread then call the main thread when I'm ready to call addSubview, would that work even if UIKit is not thread safe? Or is there something else I'm missing?

Upvotes: 0

Views: 295

Answers (3)

Andrea
Andrea

Reputation: 26383

What are you exactly doing in viewDidLoad? Btw remember that a view is only loaded when you need it, if you want to switch between views faster I can suggest you to create an initializion phase where you call -view on all the view controller you want to show, maybe helped with a spinner or a progress bar. but pay attention this would work only with intensive loading task and not memory consuming tasks.
It sounds very strange your request, so is better the you try to explain better why your viewDidLoad is so slow, maybe there is something wrong.

Upvotes: 1

LocoMike
LocoMike

Reputation: 5656

Try to move some code you might have in viewDidLoad to viewdidAppear. viewDidAppear is being called once the view is presented. If you have to make some hard work, do it there and maybe show aa spinner somewhere while you do that.

Upvotes: 1

GoZoner
GoZoner

Reputation: 70275

Define your UI elements in Xcode as part of designing the interface. That way, Xcode can compile your storeyboard or xib files into the rapidly loading binary form.

Upvotes: 0

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