Showing error while using 'animateWithDuration'

Question

I am new in Swift so could not figure out the problem , Please guide me

using It like

 UIView.animateWithDuration(duration, delay: 0.0, options: option, animations: { () -> Void in
        self.btnCallButton.hidden = true
       }, completion: nil)

and it showing following error

Cannot invoke 'animateWithDuration' with an argument list of type '(Float, delay: FloatLiteralConvertible, options: UIViewAnimationOptions, animations: () -> Void, completion: NilLiteralConvertible)'

please give the required suggestion and also provide some links which describe the blocks in swift

Note Swift!=Swing. Please **read** the helpful tag pop-ups before slapping them on a question. — Andrew Thompson, Jan 28 '15 at 12:26
possible duplicate of [Nested closures does not like argument list](http://stackoverflow.com/questions/26022052/nested-closures-does-not-like-argument-list) — Dániel Nagy, Jan 28 '15 at 12:28
Hidden isn't animatable anyway so you don't need the animation code for this. — Fogmeister, Jan 28 '15 at 12:33

score 0 · Answer 1 · edited Jul 10 '19 at 08:10

Hidden is not animatable in Swift. If you want to hide/show via fade in/out use the following code for fadeout

UIView.animate(withDuration: duration, delay: 0.0, options: options, animations: {
    self.btnCallButton.isHidden = false
    self.btnCallButton.alpha = 0.0
}, completion: { finished in
    self.btnCallButton.isHidden = true
})

and following for fadein

UIView.animate(withDuration: duration, delay: 0.0, options: options, animations: {
    self.btnCallButton.isHidden = false
    self.btnCallButton.alpha = 1.0
}, completion: { finished in

})

score 0 · Answer 2 · edited Jul 03 '19 at 07:24

0

Add return at end of closure as

UIView.animate(withDuration: duration, delay: 0.0, options: option, animations: { () -> Void in
    self.btnCallButton.hidden = true
    return
}, completion: nil)

edited Jul 03 '19 at 07:24

Karen Hovhannisyan

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answered Jun 16 '15 at 08:35

Mehul Thakkar

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score 0 · Accepted Answer · edited Jul 10 '19 at 08:44

0

Like this:

UIView.animate(withDuration: 0.35) {
  // animate things
  return
}

edited Jul 10 '19 at 08:44

Karen Hovhannisyan

1,140
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answered Aug 13 '15 at 16:44

Adam Waite

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Showing error while using 'animateWithDuration'

3 Answers3