swift开发笔记14

dotOne.transform = CGAffineTransform.init(scaleX: 0.01, y: 0.01)

// OptionSet，可以多选，例如[.repeat, .autoreverse]

UIView.animate(withDuration: 0.6, delay: 0.0, options: [.repeat, .autoreverse], animations: {

            self.dotOne.transform = CGAffineTransform.identity

        }, completion: nil)

    enum vcName: String {

        case chat = "ChatViewController"

        case stories = "StoriesViewController"

        case discover = "DiscoverViewController"

    }

let chatVC = UIViewController.init(nibName: vcName.chat.rawValue, bundle: nil)

childVC.didMove(toParentViewController: parentViewController)

原文：http://www.cnblogs.com/dengchaojie/p/7486284.html