//// GifFunctions.swift// GifFunctions//// Created by Ambu Sangoli on 11/12/16.// Copyright © 2016 Ambu Sangoli. All rights reserved.//import UIKitimport ImageIOfileprivate func < <T : Comparable>(lhs: T?, rhs: T?) -> Bool { switch (lhs, rhs) { case let (l?, r?): return l < r case (nil, _?): return true default: return false }}extension UIImage { public class func gifImageWithData(_ data: Data) -> UIImage? { guard let source = CGImageSourceCreateWithData(data as CFData, nil) else { print("image doesn't exist") return nil } return UIImage.animatedImageWithSource(source) } public class func gifImageWithURL(_ gifUrl:String) -> UIImage? { guard let bundleURL:URL = URL(string: gifUrl) else { print("image named \"\(gifUrl)\" doesn't exist") return nil } guard let imageData = try? Data(contentsOf: bundleURL) else { print("image named \"\(gifUrl)\" into NSData") return nil } return gifImageWithData(imageData) } public class func gifImageWithName(_ name: String) -> UIImage? { guard let bundleURL = Bundle.main .url(forResource: name, withExtension: "gif") else { print("SwiftGif: This image named \"\(name)\" does not exist") return nil } guard let imageData = try? Data(contentsOf: bundleURL) else { print("SwiftGif: Cannot turn image named \"\(name)\" into NSData") return nil } return gifImageWithData(imageData) } class func delayForImageAtIndex(_ index: Int, source: CGImageSource!) -> Double { var delay = 0.1 let cfProperties = CGImageSourceCopyPropertiesAtIndex(source, index, nil) let gifProperties: CFDictionary = unsafeBitCast( CFDictionaryGetValue(cfProperties, Unmanaged.passUnretained(kCGImagePropertyGIFDictionary).toOpaque()), to: CFDictionary.self) var delayObject: AnyObject = unsafeBitCast( CFDictionaryGetValue(gifProperties, Unmanaged.passUnretained(kCGImagePropertyGIFUnclampedDelayTime).toOpaque()), to: AnyObject.self) if delayObject.doubleValue == 0 { delayObject = unsafeBitCast(CFDictionaryGetValue(gifProperties, Unmanaged.passUnretained(kCGImagePropertyGIFDelayTime).toOpaque()), to: AnyObject.self) } delay = delayObject as! Double if delay < 0.1 { delay = 0.1 } return delay } class func gcdForPair(_ a: Int?, _ b: Int?) -> Int { var a = a var b = b if b == nil || a == nil { if b != nil { return b! } else if a != nil { return a! } else { return 0 } } if a < b { let c = a a = b b = c } var rest: Int while true { rest = a! % b! if rest == 0 { return b! } else { a = b b = rest } } } class func gcdForArray(_ array: Array<Int>) -> Int { if array.isEmpty { return 1 } var gcd = array[0] for val in array { gcd = UIImage.gcdForPair(val, gcd) } return gcd } class func animatedImageWithSource(_ source: CGImageSource) -> UIImage? { let count = CGImageSourceGetCount(source) var images = [CGImage]() var delays = [Int]() for i in 0..<count { if let image = CGImageSourceCreateImageAtIndex(source, i, nil) { images.append(image) } let delaySeconds = UIImage.delayForImageAtIndex(Int(i), source: source) delays.append(Int(delaySeconds * 1000.0)) // Seconds to ms } let duration: Int = { var sum = 0 for val: Int in delays { sum += val } return sum }() let gcd = gcdForArray(delays) var frames = [UIImage]() var frame: UIImage var frameCount: Int for i in 0..<count { frame = UIImage(cgImage: images[Int(i)]) frameCount = Int(delays[Int(i)] / gcd) for _ in 0..<frameCount { frames.append(frame) } } let animation = UIImage.animatedImage(with: frames, duration: Double(duration) / 1000.0) return animation }}Save above code with any file name example GifFunctions.Swift add it to your project and use it like below
let gifToplay = UIImage.gifImageWithName("YourGifName")YourImageView.image = (image: gifToplay)Also you can use other methods.
Enjoy (y)