func shakeByRotateView(view:UIView){
let shake:CABasicAnimation = CABasicAnimation(keyPath: "transform.rotation")
shake.duration = 0.12
shake.repeatCount = Float.infinity
shake.autoreverses = true
shake.fromValue = NSNumber(value: 0.05*Double.pi)
shake.toValue = NSNumber(value: -0.05*Double.pi)
view.layer.add(shake, forKey: "lineRotation")
}
func shakeView(view:UIView){
let shake:CABasicAnimation = CABasicAnimation(keyPath: "position")
shake.duration = 0.1
shake.repeatCount = 2
shake.autoreverses = true
var from_point:CGPoint = CGPoint(x:view.center.x - 5,y: view.center.y)
var from_value:NSValue = NSValue(cgPoint: from_point)
var to_point:CGPoint = CGPoint(x:view.center.x + 5,y: view.center.y)
var to_value:NSValue = NSValue(cgPoint: to_point)
shake.fromValue = from_value
shake.toValue = to_value
view.layer.add(shake, forKey: "position")
}
