gistfile1.swift

    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        
        if self.alreadySearched {
            return
        }
        self.alreadySearched = true
        
        self.searchingAnimationView.showMessage2("LOOKING FOR HOTELS\nWITH VACANCIES") {
            
            var totalWidth: CGFloat = 0.0
            let hotelImageViews: [UIImageView] = (1...5).map {
                i in
                let hotelImageView = UIImageView(image: UIImage(named: "ic-hotel-\(i)")!)
                totalWidth += hotelImageView.bounds.size.width
                return hotelImageView
            }
            
            var leftPosition = -totalWidth
            let y = (self.searchingAnimationView.frame.size.height / 2)
            for hotelImageView in hotelImageViews {
                hotelImageView.alpha = 0.3
                let width = hotelImageView.frame.size.width
                hotelImageView.center = CGPoint(x: leftPosition + (width / 2), y: y)
                leftPosition += width
                self.searchingAnimationView.addSubview(hotelImageView)
            }
            
            func animateHotels() {
                UIView.animateWithDuration(3, animations: {
                    for hotelImageView in hotelImageViews {
                        hotelImageView.center = CGPoint(x: totalWidth + hotelImageView.center.x, y: hotelImageView.center.y)
                    }
                }, completion: {
                    finished in
                    if finished {
                        animateHotels()
                    }
                })
            }
        }
     }