Swift version: 5.2
Swift offers you two ways to run code on the main thread: GCD and performSelector(onMainThread:)
. The first option looks like this:
DispatchQueue.main.async { [unowned self] in
self.yourCodeHere()
}
The second option looks like this:
performSelector(onMainThread: #selector(yourCodeHere), with: nil, waitUntilDone: false)
The GCD option (the first one) has the advantage that you can write your code inline, whereas the second one requires a dedicated method you can call.
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Available from iOS 4.0 – see Hacking with Swift tutorial 9
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
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