在Iphone UIImageView中添加动画Gif图像

import UIKit
import ImageIO

guard let gifPath = Bundle.main.path(forResource: "animation", ofType: "gif") else { return }
guard let gifData = try? Data(contentsOf: URL(fileURLWithPath: gifPath)) else { return }

let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
self.view.addSubview(imageView)

guard let imageSource = CGImageSourceCreateWithData(gifData as CFData, nil) else { return }

let frameCount = CGImageSourceGetCount(imageSource)
var frameImages: [UIImage] = []
var frameDurations: [Double] = []

for i in 0..<frameCount {
    guard let frameImageRef = CGImageSourceCreateImageAtIndex(imageSource, i, nil) else { continue }
    let frameImage = UIImage(cgImage: frameImageRef)
    frameImages.append(frameImage)

    guard let properties = CGImageSourceCopyPropertiesAtIndex(imageSource, i, nil) as? [String: Any],
          let gifInfo = properties[kCGImagePropertyGIFDictionary as String] as? [String: Any],
          let frameDuration = gifInfo[kCGImagePropertyGIFDelayTime as String] as? Double else { continue }
    frameDurations.append(frameDuration)
}

imageView.animationImages = frameImages
imageView.animationDuration = frameDurations.reduce(0, +)
imageView.animationRepeatCount = 0 // 0表示无限循环

imageView.startAnimating()