iPhone shine animation

Question

I\'m trying to get my view to do a nice shining animation to catch the user\'s eyes. Any ideas how to implement this?

Here\'s what I have so far:

[UIView         


        

Answer 1

Here is the swift code for the shine effect

class Animate {

    /// Add a persistent shimmer animation. Usage: `Animate.shimmer(myView)`
    static func shimmer(view: UIView) {
      let gradient = CAGradientLayer()
      gradient.startPoint = CGPointMake(0, 0)
      gradient.endPoint = CGPointMake(1, -0.02)
      gradient.frame = CGRectMake(0, 0, view.bounds.size.width*3, view.bounds.size.height)

      let lowerAlpha: CGFloat = 0.7
      let solid = UIColor(white: 1, alpha: 1).CGColor
      let clear = UIColor(white: 1, alpha: lowerAlpha).CGColor
      gradient.colors     = [ solid, solid, clear, clear, solid, solid ]
      gradient.locations  = [ 0,     0.3,   0.45,  0.55,  0.7,   1     ]

      let theAnimation : CABasicAnimation = CABasicAnimation(keyPath: "transform.translation.x")
      theAnimation.duration = 4
      theAnimation.repeatCount = Float.infinity
      theAnimation.autoreverses = false
      theAnimation.removedOnCompletion = false
      theAnimation.fillMode = kCAFillModeForwards
      theAnimation.fromValue = -view.frame.size.width * 2
      theAnimation.toValue =  0
      gradient.addAnimation(theAnimation, forKey: "animateLayer")

      view.layer.mask = gradient

    }
}

Swift 3.0

func shimmer(view: UIView) {
        let gradient = CAGradientLayer()
        gradient.startPoint = CGPoint(x: 0, y: 0)
        gradient.endPoint = CGPoint(x: 1, y: -0.02)
        gradient.frame = CGRect(x: 0, y: 0, width: view.bounds.size.width*3, height: view.bounds.size.height)

        let lowerAlpha: CGFloat = 0.7
        let solid = UIColor(white: 1, alpha: 1).cgColor
        let clear = UIColor(white: 1, alpha: lowerAlpha).cgColor
        gradient.colors     = [ solid, solid, clear, clear, solid, solid ]
        gradient.locations  = [ 0,     0.3,   0.45,  0.55,  0.7,   1     ]

        let theAnimation : CABasicAnimation = CABasicAnimation(keyPath: "transform.translation.x")
        theAnimation.duration = 2
        theAnimation.repeatCount = Float.infinity
        theAnimation.autoreverses = false
        theAnimation.isRemovedOnCompletion = false
        theAnimation.fillMode = kCAFillModeForwards
        theAnimation.fromValue = -view.frame.size.width * 2
        theAnimation.toValue =  0
        gradient.add(theAnimation, forKey: "animateLayer")

        view.layer.mask = gradient
    }