Set contents of CALayer to animated GIF?

Question

Is it possible to set the contents of a CALayer to an animated GIF and have it display that animation? I know that I can set the contents to an image like so:

Answer 1

Swift 3 version, but changed to receive URL (for my own purpose).

func createGIFAnimation(url:URL) -> CAKeyframeAnimation?{

    guard let src = CGImageSourceCreateWithURL(url as CFURL, nil) else { return nil }
    let frameCount = CGImageSourceGetCount(src)

    // Total loop time
    var time : Float = 0

    // Arrays
    var framesArray = [AnyObject]()
    var tempTimesArray = [NSNumber]()

    // Loop
    for i in 0..

Important thing is written in the documentation of 'CAKeyframeAnimation':

the first value in the array must be 0.0 and the last value must be 1.0. The array should have one more entry than appears in the values array. For example, if there are two values, there should be three key times.

So added this line:

 timesArray.append(NSNumber(value: 1.0))

And also checked in exporting as video with AVAssetExportSession.

Please call like this:

if let url = Bundle.main.url(forResource: "animation", withExtension: "gif"){
    let animation = createGIFAnimation(url: url)
}