import UIKit
class ViewController: UIViewController {
@IBOutlet weak var gifView: FLAnimatedImageView!
override func viewDidLoad() {
  super.viewDidLoad()
  print("\(gifView)")
  if let path =  NSBundle.mainBundle().pathForResource("rock", ofType: "gif") {
    if let data = NSData(contentsOfFile: path) {
      let gif = FLAnimatedImage(animatedGIFData: data)
      gifView.animatedImage = gif
    }
  }
}
}

顺便问一下，你是在从FLAnimatedImageView子类化的故事板中制作animatedImageView的吗？

Swift 4：Gif URL示例

@IBOutlet weak var gifImageView: FLAnimatedImageView!

private func showGifImage(url: URL) {
    DispatchQueue.global().async { [weak self] in
        do {
            let gifData = try Data(contentsOf: url)
            DispatchQueue.main.async {
                self?.gifImageView.animatedImage = FLAnimatedImage(gifData: gifData)
            }
        } catch {
            print(error)
        }
    }
}

Swift 5：GIF资产解决方案

extension FLAnimatedImage {
    convenience init (gifResource: String) {
        if let bundleURL = Bundle.main.url(forResource: gifResource, withExtension: "gif"),
           let imageData = try? Data(contentsOf: bundleURL) {
            self.init(animatedGIFData: imageData)
        }
        else { 
            self.init(animatedGIFData: nil)
        }
    }
}

不知道这是否是最好的解决方案，但它对我有效，请随时评论建议。

我得到了它的工作与以下扩展：

extension FLAnimatedImage {
    convenience init(gifResource: String) {
        self.init(animatedGIFData: NSData(contentsOfFile:     NSBundle.mainBundle().pathForResource(gifResource, ofType: "")!))
    }
}

声明：

@IBOutlet weak var animatedImageView: FLAnimatedImageView!

致电：

animatedImageView.animatedImage = FLAnimatedImage(gifResource: "chicken.gif")

在故事板中，UIImageView有一个自定义子类：FLAnimatedImageView