Whats the Swift animate WithDuration syntax? - swift

Question

I'm porting an older app over to Xcode 7 beta and I'm getting an error on my animations:
Cannot invoke 'animateWithDuration' with an argument list of type
'(Double, delay: Double, options: nil, animations: () -> _,
completion: nil)'
Here's the code:
UIView.animateWithDuration(0.5, delay: 0.3, options: nil, animations: {
self.username.center.x += self.view.bounds.width
}, completion: nil)
This works in Xcode 6 so I'm assuming this is an update in Swift. So my question is:
What's the Swift 3 syntax for animateWithDuration?

Answer 1

Swift 3/4 Syntax
Here's an update with the Swift 3 Syntax:
UIView.animate(withDuration: 0.5, delay: 0.3, options: [.repeat, .curveEaseOut, .autoreverse], animations: {
self.username.center.x += self.view.bounds.width
}, completion: nil)
If you need to add a completion handler just add a closure like so:
UIView.animate(withDuration: 0.5, delay: 0.3, options: [.repeat, .curveEaseOut, .autoreverse], animations: {
// animation stuff
}, completion: { _ in
// do stuff once animation is complete
})
Old Answer:
It turns out it's a very simple fix, just change options: nil to options: [].
Swift 2.2 Syntax:
UIView.animateWithDuration(0.5, delay: 0.3, options: [], animations: {
self.username.center.x += self.view.bounds.width
}, completion: nil)
What changed?
Swift 2 got rid of the C-Style comma-delimited list of options in favor of option sets (see: OptionSetType). In my original question, I passed in nil for my options, which was valid prior to Swift 2. With the updated syntax, we now see an empty option list as an empty set: [].
An example of animateWithDuration with some options would be this:
UIView.animateWithDuration(0.5, delay: 0.3, options: [.Repeat, .CurveEaseOut, .Autoreverse], animations: {
self.username.center.x += self.view.bounds.width
}, completion: nil)

Answer 2

Swift 3, 4, 5
UIView.animate(withDuration: 1.5, delay: 0.05 * Double(index), usingSpringWithDamping: 0.8, initialSpringVelocity: 0, options: [], animations: {
cell.transform = CGAffineTransform(translationX: 0, y: 0)
}, completion: nil)

Answer 3

Swift 3 Syntax with completion block
UIView.animate(withDuration: 3.0 , delay: 0.25, options: .curveEaseOut, animations: {
// animation
}, completion: { _ in
// completion
})

Answer 4

Swift 2
UIView.animateWithDuration(1.0, delay: 0.1, options: [.Repeat, .CurveEaseOut, .Autoreverse], animations: {
// animation
}, completion: { finished in
// completion
})
Swift 3, 4, 5
UIView.animate(withDuration: 1.0, delay: 0.1, options: [.repeat, .curveEaseOut, .autoreverse], animations: {
// animation
}, completion: { finished in
// completion
})