I have what should be a fairly simple question here. Basically I'm trying to move an object (a UIImageView) from a point A (where it is set in the storyboard) to a point B which I define programatically.
My first pass through this resulted in this code
UIView.animateWithDuration(0.75, delay: 0.5, options: UIViewAnimationOptions.CurveLinear, animations: {
self.signInButton.alpha = 1
self.signInButton.center.y = 10
}, completion: nil)
However, what this code does is to basically move the button offcenter and then back to its original location.
I then looked into QuartzCore to help me, but everything is in Objective-C. I have this method:
func moveImage(view: UIImageView){
var toPoint: CGPoint = CGPointMake(0.0, -10.0)
var fromPoint : CGPoint = CGPointZero
var movement = CABasicAnimation(keyPath: "movement")
movement.additive = true
movement.fromValue = fromPoint
movement.toValue = toPoint
movement.duration = 0.3
view.layer.addAnimation(movement, forKey: "move")
}
However the problem here is that movement.fromValue
cannot accept a CGPoint
. I know that in objective C there was a function that converted a CGPoint
to a NSValue
, however this function seems to be deprecated out of Swift and I can't find the other way of doing this.
Therefore my question is either, how do I convert CGPoint
to NSValue
to make my moveImage()
function work, or is there a better way to move an object from point A to point B?
Thanks!
I'm looking at this question Animate UIImage in UIImageView Up & Down (Like it's hovering) Loop
Use NSValue(CGPoint: cgpiont)
instead of NSValue.valueWithCGPoint(<#point: CGPoint#>)
which is deprecated in swift. NSValue(CGPoint: cgpiont)
is constructor given for that which can be used to convert CGPoint
to NSValue
in swift.Following code will work
func moveImage(view: UIImageView){
var toPoint: CGPoint = CGPointMake(0.0, -10.0)
var fromPoint : CGPoint = CGPointZero
var movement = CABasicAnimation(keyPath: "movement")
movement.additive = true
movement.fromValue = NSValue(CGPoint: fromPoint)
movement.toValue = NSValue(CGPoint: toPoint)
movement.duration = 0.3
view.layer.addAnimation(movement, forKey: "move")
}