Animation to resize LottieView with auto layout constraints is not working when upgrade lottie-ios from 3.1.8 to 4.4.0 #2359

tungnv87 · 2024-04-03T05:10:12Z

Hi support team,
I have an issue relate to resize animation by change height constraint of LottieAnimationView (auto layout), the content animationView cannot scale to fit the container view in animation transaction.

The issue was not appeared on version 3.1.8, but after we upgrade to 4.4.0 and rename the view from AnimationView to LottieAnimationView.

Please take a look to my screen recording and sample project, thanks a lot!

Bellow is the code we are initial animation view, and how we animate the view:

private func makeLoadingView() -> UIView? {
        let animationView = LottieAnimationView(
            animation: .named(
                "Boat_Loader",
                bundle: Bundle(for: type(of: self))
            )
        )
        animationView.loopMode = .loop
        animationView.contentMode = .scaleAspectFill
        animationView.layer.borderColor = UIColor.red.cgColor
        animationView.layer.borderWidth = 1
        animationView.play()
        animationView.translatesAutoresizingMaskIntoConstraints = false

        return animationView
    }

UIView.animate(withDuration: 2.0, animations: {
            if !sender.isSelected {
                self.constraintHeightLoadingView.constant = 40
            } else {
                self.constraintHeightLoadingView.constant = 200
            }
            self.view.layoutIfNeeded()
            self.lottieContainerView.layoutIfNeeded()
        }, completion: { _ in
        })