Peek and Pop 코드

<Like or Like>

ViewController.swift

	import UIKit
	class ViewController: UIViewController {
	@IBOutlet weak var collectionView: UICollectionView!
	var photos: [UIImage] {
	var photoList: [UIImage] = []
	for index in 0..<9 {
	let image = UIImage(named: "\(index).jpg")
	photoList.append(image!)
	}
	return photoList
	}
	override func viewDidLoad() {
	super.viewDidLoad()
	navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
	navigationController?.navigationBar.shadowImage = UIImage()
	if traitCollection.forceTouchCapability == .available {
	registerForPreviewing(with: self, sourceView: view)
	}
	}
	override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
	if let destination = segue.destination as? DetailViewController {
	destination.image = (sender as? CollectionViewCell)?.imageView.image
	}
	}
	}
	extension ViewController: UIViewControllerPreviewingDelegate {
	func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
	print("\(#function) called.")
	// showDetailViewController(viewControllerToCommit, sender: self)
	}
	func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
	guard let indexPath = collectionView.indexPathForItem(at: location) else { return nil }
	guard let cell = collectionView.cellForItem(at: indexPath) as? CollectionViewCell else { return nil }
	guard let detailVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "DetailViewController") as? DetailViewController else { return nil }
	detailVC.image = photos[indexPath.row]
	detailVC.preferredContentSize = CGSize(width: 0, height: 300)
	previewingContext.sourceRect = cell.frame
	return detailVC
	}
	override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
	}
	}
	extension ViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
	func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
	return photos.count
	}
	func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
	guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as? CollectionViewCell else { return UICollectionViewCell() }
	cell.imageView.image = photos[indexPath.row]
	return cell
	}
	func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
	return CGSize(width: collectionView.bounds.size.width / 2.5, height: collectionView.bounds.size.height)
	}
	func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
	return CGSize(width: 0, height: 0)
	}
	}
	class CollectionViewCell: UICollectionViewCell {
	@IBOutlet weak var imageView: UIImageView!
	}

view raw peekAndPop.swift hosted with ❤ by GitHub

DetailViewController.swift

	import UIKit
	class DetailViewController: UIViewController {
	var image: UIImage?
	@IBOutlet weak var imageView: UIImageView!
	override func viewDidLoad() {
	super.viewDidLoad()
	imageView.image = image
	}
	override var previewActionItems: [UIPreviewActionItem] {
	let likeAction = UIPreviewAction(title: "Like", style: .default) { (action, viewController) in
	print("Like pressed. action: \(action), viewController: \(viewController)")
	}
	let deleteAction = UIPreviewAction(title: "Like", style: .destructive) { (action, viewController) in
	print("Delete pressed. action: \(action), viewController: \(viewController)")
	}
	return [likeAction, deleteAction]
	}
	}

view raw peekAndPop2.swift hosted with ❤ by GitHub