UIView 或 图片 实现动画效果

UIView 实现动画效果:

1.设置全局UIView动画

UIView.animateWithDuration(1, delay: 0.3, options: .Repeat | .CurveEaseIn, animations: {
            self.qrscan.frame = CGRectMake(113, 350, 94, 2)
            self.qrscan.animationRepeatCount = 0
            }, completion: {finished in
                println("moved!")
                //self.qrStopMove()
        })

2 .单独设置轨迹动画:

let anim = CAKeyframeAnimation(keyPath: "position")
        let path = UIBezierPath()
        path.moveToPoint(CGPoint(x: 160,y: 130))  //113, 130 //x: 16,y: 239
        path.addCurveToPoint(CGPoint(x: 160, y: 350), controlPoint1: CGPoint(x: 160, y: 200), controlPoint2: CGPoint(x: 160, y: 270))
        anim.path = path.CGPath
        anim.repeatCount = Float.infinity
        anim.duration = 3.0
        qrscan.layer.addAnimation(anim, forKey: "QR-animate")