Junior — Middle

Is it possible to perform AutoLayout configuration outside the main thread?

sobes.tech AI

Answer from AI

AutoLayout setup in iOS must be performed on the main thread, as all UI operations should occur there. AutoLayout affects the positioning and sizing of UI elements, and UIKit is not thread-safe.

Attempting to change constraints or call methods related to AutoLayout from a background thread can lead to unpredictable behavior, crashes, or warnings.

Therefore, any changes related to AutoLayout should be made on the main thread, for example:

DispatchQueue.main.async {
    // Change constraints
    viewConstraint.constant = 20
    view.layoutIfNeeded()
}

In summary: configuring AutoLayout outside the main thread is not recommended and can cause errors.

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