Lottie 4.0.1 issue under iOS 16.2 in SwiftUI

[iKK001]

Which Version of Lottie are you using?

Lottie 4.0.1

Expected Behavior

On my previous Lottie version 3.4.1, everything was fine. But now with 4.0.1 my code no longer compiles.

I am using SwiftUI under iOS 16.2, XCode 14.2 and Swift 5.7.2

Here is my code of the LottieView under SwiftUI

import SwiftUI
import Lottie

struct LottieView: UIViewRepresentable {
    
    var lottieFile: String
    var loopMode: LottieLoopMode = .playOnce
    var animationView = AnimationView()
    
    func makeUIView(context: UIViewRepresentableContext<LottieView>) -> UIView {
        let view = UIView()
        
        animationView.animation = Animation.named(lottieFile)
        animationView.contentMode = .scaleAspectFill
        animationView.loopMode = loopMode
        
        animationView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(animationView)
        
        NSLayoutConstraint.activate([
            animationView.widthAnchor.constraint(equalTo: view.widthAnchor),
            animationView.heightAnchor.constraint(equalTo: view.heightAnchor)
        ])
        
        return view
    }
    
    func updateUIView(_ uiView: UIView, context: UIViewRepresentableContext<LottieView>) {
        animationView.play()
    }
}

Actual Behavior

Here a screenshot of the error messages when compiling under Lottie 4.0.1

(it seems to no longer find the AnimationView() for some reason.

What do I need to change when using Lottie 4.0.2 under iOS 16.2 in SwiftUI ??

[iKK001]

Ah I think I've found out: When compiling under Lottie 3.5.0 I get at least the information that AnimationView was deprecated and it should rather be LottieAnimationView instead.

I tried the same under Lottie 4.0.1 and it worked. (i.e. replacing AnimationView with LottieAnimationView and also replacing Animation with LottieAnimation, as shown below.

Would have been nice if the deprecation-information would still show under 4.0.1.

import SwiftUI
import Lottie

struct LottieView: UIViewRepresentable {
    
    var lottieFile: String
    var loopMode: LottieLoopMode = .playOnce
    var animationView = LottieAnimationView()
    
    func makeUIView(context: UIViewRepresentableContext<LottieView>) -> UIView {
        let view = UIView()
        
        animationView.animation = LottieAnimation.named(lottieFile)
        animationView.contentMode = .scaleAspectFill
        animationView.loopMode = loopMode
        
        animationView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(animationView)
        
        NSLayoutConstraint.activate([
            animationView.widthAnchor.constraint(equalTo: view.widthAnchor),
            animationView.heightAnchor.constraint(equalTo: view.heightAnchor)
        ])
        
        return view
    }
    
    func updateUIView(_ uiView: UIView, context: UIViewRepresentableContext<LottieView>) {
        animationView.play()
    }
}

[calda]

Closing this issue since you found the workaround. As you noticed we renamed Animation to LottieAnimation in 4.0 to resolve a conflict with SwiftUI.Animation. Unfortunately we can't add a deprecation message since something like @deprecated typealias Animation = LottieAnimation would still conflict with SwiftUI.Animation.