crossDissolve animation not working

[xygkevin]

Description

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What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• discussion

Requirements (place an x in each of the [ ])

• I've read and understood the Contributing guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've searched for any related issues and avoided creating a duplicate issue.

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Bug Report

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SkeletonView Environment:

**SkeletonView version:1.30.2
**Xcode version:13.4.1
**Swift version:swift5

Steps to reproduce:

Please replace this with the steps to reproduce the behavior.

view.showSkeleton(transition: .crossDissolve(0.25))
view.hideSkeleton(transition: .crossDissolve(0.25))

All show or hide cross dissolve animation are not working, the same problem with the demo project

both

Expected result:

Please replace this with what you expected to happen.

Actual result:

Please replace this with of what happened instead.

Attachments:

Logs, screenshots, sample project, funny gif, etc.

[ardavydov]

Confirm, it doesn't work even in the demo project

[Serg-Pogrebnyak]

same on my end

[Serg-Pogrebnyak]

@ardavydov and @xygkevin Here is the fix for hiding:
in CALayer extension find next function:
func setOpacity(from: Int, to: Int, duration: TimeInterval, completion: (() -> Void)?)
and change it code on the next:

DispatchQueue.main.async { [weak self] in
    guard let strongSelf = self else { return }
    CATransaction.begin ()
    let animation = CABasicAnimation (keyPath: #keyPath (CALayer.opacity))
    animation.fromValue = from
    animation.toValue = to
    animation.duration = duration
    animation.timingFunction = CAMediaTimingFunction (name:
    CAMediaTimingFunctionName.easeInEaseOut)
    animation.fillMode = .forwards
    animation.isRemovedOnCompletion = false
    CATransaction.setCompletionBlock(completion)
    strongSelf.add(animation, forKey: "setOpacityAnimation")
    CATransaction.commit ()
}