Welcome back all! Today, let's finish up the layout for each of our video cells first. Then we'll move onto customizing the navigation bar to closely match our YouTube app. Finally lets clean up some of the code to better reflect general MVC structuring.

<div class='filename'>HomeController.swift</div> !codebreak !syntax-highlight class HomeController: UICollectionViewController, UICollectionViewDelegateFlowLayout { override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "Home" navigationController?.navigationBar.translucent = false let titleLabel = UILabel(frame: CGRectMake(0, 0, view.frame.width - 32, view.frame.height)) titleLabel.text = "Home" titleLabel.textColor = UIColor.whiteColor() titleLabel.font = UIFont.systemFontOfSize(20) navigationItem.titleView = titleLabel collectionView?.backgroundColor = UIColor.whiteColor() collectionView?.registerClass(VideoCell.self, forCellWithReuseIdentifier: "cellId") } override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return 5 } override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cellId", forIndexPath: indexPath) return cell } func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize { let height = (view.frame.width - 16 - 16) * 9 / 16 return CGSizeMake(view.frame.width, height + 16 + 68) } func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAtIndex section: Int) -> CGFloat { return 0 } } !codebreak <div class='filename'>UIColor extension</div> !codebreak !syntax-highlight extension UIColor { static func rgb(red: CGFloat, green: CGFloat, blue: CGFloat) -> UIColor { return UIColor(red: red/255, green: green/255, blue: blue/255, alpha: 1) } } !codebreak <div class='filename'>UIView</div> !codebreak !syntax-highlight extension UIView { func addConstraintsWithFormat(format: String, views: UIView...) { var viewsDictionary = [String: UIView]() for (index, view) in views.enumerate() { let key = "v\(index)" view.translatesAutoresizingMaskIntoConstraints = false viewsDictionary[key] = view } addConstraints(NSLayoutConstraint.constraintsWithVisualFormat(format, options: NSLayoutFormatOptions(), metrics: nil, views: viewsDictionary)) } } !codebreak <div class='filename'>AppDelegate</div> !codebreak !syntax-highlight func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { window = UIWindow(frame: UIScreen.mainScreen().bounds) window?.makeKeyAndVisible() let layout = UICollectionViewFlowLayout() window?.rootViewController = UINavigationController(rootViewController: HomeController(collectionViewLayout: layout)) UINavigationBar.appearance().barTintColor = UIColor.rgb(230, green: 32, blue: 31) application.statusBarStyle = .LightContent let statusBarBackgroundView = UIView() statusBarBackgroundView.backgroundColor = UIColor.rgb(194, green: 31, blue: 31) window?.addSubview(statusBarBackgroundView) window?.addConstraintsWithFormat("H:|[v0]|", views: statusBarBackgroundView) window?.addConstraintsWithFormat("V:|[v0(20)]", views: statusBarBackgroundView) return true } !codebreak <div class='filename'>VideoCell.swift</div> !codebreak !syntax-highlight class VideoCell: UICollectionViewCell { override init(frame: CGRect) { super.init(frame: frame) setupViews() } let thumbnailImageView: UIImageView = { let imageView = UIImageView() imageView.image = UIImage(named: "taylor_swift_blank_space") imageView.contentMode = .ScaleAspectFill imageView.clipsToBounds = true return imageView }() let userProfileImageView: UIImageView = { let imageView = UIImageView() imageView.image = UIImage(named: "taylor_swift_profile") imageView.layer.cornerRadius = 22 imageView.layer.masksToBounds = true return imageView }() let separatorView: UIView = { let view = UIView() view.backgroundColor = UIColor(red: 230/255, green: 230/255, blue: 230/255, alpha: 1) return view }() let titleLabel: UILabel = { let label = UILabel() label.translatesAutoresizingMaskIntoConstraints = false label.text = "Taylor Swift - Blank Space" return label }() let subtitleTextView: UITextView = { let textView = UITextView() textView.translatesAutoresizingMaskIntoConstraints = false textView.text = "TaylorSwiftVEVO • 1,604,684,607 views • 2 years ago" textView.textContainerInset = UIEdgeInsetsMake(0, -4, 0, 0) textView.textColor = UIColor.lightGrayColor() return textView }() func setupViews() { addSubview(thumbnailImageView) addSubview(separatorView) addSubview(userProfileImageView) addSubview(titleLabel) addSubview(subtitleTextView) addConstraintsWithFormat("H:|-16-[v0]-16-|", views: thumbnailImageView) addConstraintsWithFormat("H:|-16-[v0(44)]", views: userProfileImageView) //vertical constraints addConstraintsWithFormat("V:|-16-[v0]-8-[v1(44)]-16-[v2(1)]|", views: thumbnailImageView, userProfileImageView, separatorView) addConstraintsWithFormat("H:|[v0]|", views: separatorView) //top constraint addConstraint(NSLayoutConstraint(item: titleLabel, attribute: .Top, relatedBy: .Equal, toItem: thumbnailImageView, attribute: .Bottom, multiplier: 1, constant: 8)) //left constraint addConstraint(NSLayoutConstraint(item: titleLabel, attribute: .Left, relatedBy: .Equal, toItem: userProfileImageView, attribute: .Right, multiplier: 1, constant: 8)) //right constraint addConstraint(NSLayoutConstraint(item: titleLabel, attribute: .Right, relatedBy: .Equal, toItem: thumbnailImageView, attribute: .Right, multiplier: 1, constant: 0)) //height constraint addConstraint(NSLayoutConstraint(item: titleLabel, attribute: .Height, relatedBy: .Equal, toItem: self, attribute: .Height, multiplier: 0, constant: 20)) //top constraint addConstraint(NSLayoutConstraint(item: subtitleTextView, attribute: .Top, relatedBy: .Equal, toItem: titleLabel, attribute: .Bottom, multiplier: 1, constant: 4)) //left constraint addConstraint(NSLayoutConstraint(item: subtitleTextView, attribute: .Left, relatedBy: .Equal, toItem: userProfileImageView, attribute: .Right, multiplier: 1, constant: 8)) //right constraint addConstraint(NSLayoutConstraint(item: subtitleTextView, attribute: .Right, relatedBy: .Equal, toItem: thumbnailImageView, attribute: .Right, multiplier: 1, constant: 0)) //height constraint addConstraint(NSLayoutConstraint(item: subtitleTextView, attribute: .Height, relatedBy: .Equal, toItem: self, attribute: .Height, multiplier: 0, constant: 30)) } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } }