In this episode, I'll show you guys how to easily bring back our home feed video cells. We'll do this in a way that separates our code nicely into a different cell class so that it'll be easier to maintain further down the road. Lastly, we'll take a look at how to change the title in our nav bar to appropriately respond to section changes in our home controller. Enjoy!

!codebreak <div class='filename'>FeedCell.swift</div> !codebreak !syntax-highlight class FeedCell: BaseCell, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout { lazy var collectionView: UICollectionView = { let layout = UICollectionViewFlowLayout() let cv = UICollectionView(frame: .zero, collectionViewLayout: layout) cv.backgroundColor = UIColor.whiteColor() cv.dataSource = self cv.delegate = self return cv }() var videos: [Video]? let cellId = "cellId" func fetchVideos() { ApiService.sharedInstance.fetchVideos { (videos: [Video]) in self.videos = videos self.collectionView.reloadData() } } override func setupViews() { super.setupViews() fetchVideos() backgroundColor = .brownColor() addSubview(collectionView) addConstraintsWithFormat("H:|[v0]|", views: collectionView) addConstraintsWithFormat("V:|[v0]|", views: collectionView) collectionView.registerClass(VideoCell.self, forCellWithReuseIdentifier: cellId) } func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return videos?.count ?? 0 } func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cellId", forIndexPath: indexPath) as! VideoCell cell.video = videos?[indexPath.item] return cell } func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize { let height = (frame.width - 16 - 16) * 9 / 16 return CGSizeMake(frame.width, height + 16 + 88) } func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAtIndex section: Int) -> CGFloat { return 0 } } !codebreak <div class='filename'>HomeController.swift</div> !codebreak !syntax-highlight class HomeController: UICollectionViewController, UICollectionViewDelegateFlowLayout { //... let titles = ["Home", "Trending", "Subscriptions", "Account"] //... func scrollToMenuIndex(menuIndex: Int) { let indexPath = NSIndexPath(forItem: menuIndex, inSection: 0) collectionView?.scrollToItemAtIndexPath(indexPath, atScrollPosition: .None, animated: true) setTitleForIndex(menuIndex) } private func setTitleForIndex(index: Int) { if let titleLabel = navigationItem.titleView as? UILabel { titleLabel.text = " \(titles[index])" } } //... override func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) { let index = targetContentOffset.memory.x / view.frame.width let indexPath = NSIndexPath(forItem: Int(index), inSection: 0) menuBar.collectionView.selectItemAtIndexPath(indexPath, animated: true, scrollPosition: .None) setTitleForIndex(Int(index)) } //... }