UIImageView wait for animation complete - ios

Question

I'm trying to execute 2 different animations, after the first complete, using isAnimating.
but, I see only the first animation...
if anims[0] == 1{
startAnimation(image : #imageLiteral(resourceName: "first"))
}
if anims[1] == 2{
while myView.isAnimating {
RunLoop.current.run(until: Date(timeIntervalSinceNow: 0.05))
}
}
startAnimation(image : #imageLiteral(resourceName: "second") , time : Int)
spriteSheet returns UIImage array after cropping..
func startAnimation(image : UIImage , time : Int){
myView.animationImages = image.spriteSheet(cols: 19, rows: 1)
myView.animationDuration = 1
myView.animationRepeatCount = time
myView.startAnimating()
}

Answer 1

You can always chain animations like
UIView.animate(withDuration: 1, animations: {
//do your animation here
}) { (state) in
UIView.animate(withDuration: 1, animations: {
//do your second animation
})
}
If you are using CABasicAnimations then you can use beginTime and duration to chain them up :)
var totalDuration = 0
let baseicAnim1 = CABasicAnimation()
baseicAnim1.beginTime = CACurrentMediaTime()
totalDuration += 10
baseicAnim1.duration = CFTimeInterval(totalDuration)
let basicAnim2 = CABasicAnimation()
basicAnim2.beginTime = CACurrentMediaTime() + CFTimeInterval(totalDuration)
totalDuration += 10
basicAnim2.duration = CFTimeInterval(totalDuration)
EDIT
Using while loop to keep checking if animation has completed its execution or not is never a suggested approach
EDIT :
Try this,
func startAnimation(image : UIImage , time : Int,completionBlock : (()->())?){
let animationDuration = 1
myView.animationImages = image.spriteSheet(cols: 19, rows: 1)
myView.animationDuration = animationDuration
myView.animationRepeatCount = time
myView.startAnimating()
DispatchQueue.main.asyncAfter(deadline: .now() + animationDuration, execute: {
if let block = completionBlock {
block()
}
})
}
Now your startAnimation function takes completion block as its parameter and executes the completion block after animationDuration. So you can get to know when animation ends :)
to chain simply call
self.startAnimation(image: #imageLiteral(resourceName: "first"), time: 1) {
self.startAnimation(image: #imageLiteral(resourceName: "second"), time: 1, completionBlock: nil)
}
Hope it helps