Delay with UI Related Code about ios-sdk HOT 3 OPEN

It appears to be an old issue that was fixed. A regression. present+dismiss combination is an old iOS quirk where somehow animated transitions can block unrelated code. I’m afk and can (re-)fix it next month.

from ios-sdk.

hello there? i have some related issue where i can not present my view controller after qrcode scan. i try to pause the scanner and then run in Dispatchque as well but it stuck. if i use without pausing it doesnt do anything.

//MARK:- Delegate Methods Below

func scanView(_ scanView: ScanView, didDetectScannables scannables: [Scannable]) {
if let scannable = scannables.first {
DispatchQueue.main.async {
let vc = PostCommentsVC()
vc.postId = Int(String(700))
vc.modalPresentationStyle = .currentContext
vc.modalTransitionStyle = .coverVertical
self.present(vc, animated: true)
}
print("Found scannable code: (scannable.value)")
}
}

from ios-sdk.

@malikk77 Yes this issue cropped up again in some past release of the SDK

I was able to work around it by running a UIView animation block to delay the view controller presentation and then proceeding. Whatever the nature of this bug running an animation set causes the view controller presentations to then work correctly:

UIView.animate(withDuration: 0.3, animations: { self.view.alpha = 0.995 }) { _ in self.present(toPresent, animated: true, completion: null) }

Note that I’m animating the view alpha here because some property has to change for the animation to actually run

from ios-sdk.