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Issue #318 I do UI in code, and usually separate between View and ViewController. class ProfileView: UIView {} class ProfileViewController: UIViewController { override func loadView() { self.view = ProfileView() } } But in places where using UIViewController and manage their view controller containment hierarchy is not desired, then we can roll out a normal object to act as the controller. class ProfileController { let profileView: ProfileView init(profileView: ProfileView) { self.profileView = profileView } func update(profile: Profile) { profileView....

Issue #317 UI Why Your App Looks Better in Sketch 8 Tips for Dark Theme Design UX Duolingo User Retention Design Details 30 Things We Often Forget When Designing Mobile Apps Case study club Showcase https://saaspages.xyz/ Resources https://shape.so/ https://icons8.com/ https://icons8.com/animated-icons https://icons8.com/vector-creator https://feathericons.com/ https://iconstore.co/ https://streamlineicons.com/

Issue #317 UI Why Your App Looks Better in Sketch 8 Tips for Dark Theme Design UX Duolingo User Retention Design Details 30 Things We Often Forget When Designing Mobile Apps Case study club Showcase https://saaspages.xyz/ Resources https://shape.so/ https://icons8.com/ https://icons8.com/animated-icons https://icons8.com/vector-creator https://feathericons.com/ https://iconstore.co/ https://streamlineicons.com/ https://illlustrations.co/

Issue #316 Browsers and devices used in 2018 AppStore measurement

Issue #315 extension PanCollectionViewController: UIGestureRecognizerDelegate { func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool { let velocity = panGR.velocity(in: panGR.view) return abs(velocity.y) > abs(velocity.x) } }

Issue #314 <meta name="viewport" content="width=device-width, initial-scale=1.0"> @media only screen and (max-width: 600px) { div.container { margin: 0 auto; width: 70%; margin-top: 60%; } } body { background-image: url("../images/wallpaper.png"); background-position: top right; background-attachment: fixed; background-size: cover; }

Issue #313 iOS 10 ➕UserNotifications Push user-facing notifications to the user’s device from a server, or generate them locally from your app. ➕UIViewPropertyAnimator A class that animates changes to views and allows the dynamic modification of those animations. ➕NSPersistentContainer A container that encapsulates the Core Data stack in your app. ➕UIFeedbackGenerator The abstract superclass for all feedback generators. iOS 10.3 ➕SKStoreReviewController An object that controls the process of requesting App Store ratings and reviews from users....

Issue #313 iOS 10 ➕UserNotifications Push user-facing notifications to the user’s device from a server, or generate them locally from your app. ➕UIViewPropertyAnimator A class that animates changes to views and allows the dynamic modification of those animations. ➕NSPersistentContainer A container that encapsulates the Core Data stack in your app. ➕UIFeedbackGenerator The abstract superclass for all feedback generators. iOS 10.3 ➕SKStoreReviewController An object that controls the process of requesting App Store ratings and reviews from users....

Issue #313 iOS 10 ➕UserNotifications Push user-facing notifications to the user’s device from a server, or generate them locally from your app. ➕UIViewPropertyAnimator A class that animates changes to views and allows the dynamic modification of those animations. ➕NSPersistentContainer A container that encapsulates the Core Data stack in your app. ➕UIFeedbackGenerator The abstract superclass for all feedback generators. iOS 10.3 ➕SKStoreReviewController An object that controls the process of requesting App Store ratings and reviews from users....

Issue #313 iOS 10 ➕UserNotifications Push user-facing notifications to the user’s device from a server, or generate them locally from your app. ➕UIViewPropertyAnimator A class that animates changes to views and allows the dynamic modification of those animations. ➕NSPersistentContainer A container that encapsulates the Core Data stack in your app. ➕UIFeedbackGenerator The abstract superclass for all feedback generators. iOS 10.3 ➕SKStoreReviewController An object that controls the process of requesting App Store ratings and reviews from users....

Issue #312 class ClosableWindow: NSWindow { override func close() { self.orderOut(NSApp) } } let window = ClosableWindow( contentRect: rect, styleMask: [.titled, .closable], backing: .buffered, defer: false } window.makeKeyAndOrderFront(NSApp) The reason is that window is released upon closed if it is not owned by NSWindowController, or we can use releasedWhenClosed The value of this property is YES if the window is automatically released after being closed; NO if it’s simply removed from the screen....

Issue #311 See Omnia https://github.com/onmyway133/Omnia/blob/master/Sources/iOS/UICollectionView.swift#L30 extension HorizontalUsersViewController: UIScrollViewDelegate { func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) { let point = view.convert(collectionView.center, to: collectionView) guard let indexPath = collectionView.indexPathForItem(at: point), indexPath.item < users.count else { return } let user = users[indexPath.item] delegate?.didScrollTo(user) } }

Issue #310 https://www.swiftjectivec.com/optimizing-images/ https://nshipster.com/image-resizing/

Issue #309 Apple Maps let placemark = MKPlacemark(coordinate: coordinate, addressDictionary: nil) let mapItem = MKMapItem(placemark: placemark) mapItem.name = shop.name mapItem.openInMaps(launchOptions: [:]) Google Maps https://developers.google.com/maps/documentation/urls/ios-urlscheme Use q to show pin Since iOS 9, we need to declare LSApplicationQueriesSchemes <key>LSApplicationQueriesSchemes</key> <array> <string>comgooglemaps</string> </array> var string = "comgooglemaps://" string += "?q=Food" string += "&center=\(coordinate.latitude),\(coordinate.longitude)" string += "&zoom=15" let googleUrl = URL(string: string)! if UIApplication.shared.canOpenURL(URL(string: "comgooglemaps://")!) { UIApplication.shared.open(googleUrl) }

Issue #308 If you don’t want to use https://github.com/onmyway133/EasyClosure yet, it’s easy to roll out a closure based UIButton. The cool thing about closure is it captures variables final class ClosureButton: UIButton { var didTouch: (() -> Void)? override init(frame: CGRect) { super.init(frame: frame) addTarget(self, action: #selector(buttonTouched(_:)), for: .touchUpInside) } required init?(coder aDecoder: NSCoder) { fatalError() } @objc private func buttonTouched(_: UIButton) { didTouch?() } } Then in cellForItem func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell: UserCell = collectionView....

Issue #307 import MapKit let formatter = MKDistanceFormatter() formatter.unitStyle = .abbreviated formatter.units = .metric distanceLabel.text = formatter.string(fromDistance: distance) // 700m, 1.7km

Issue #306 let json: [String: Any] = [ "id": "123", "name": "Thor", "isInMarvel": true ] let data = try JSONSerialization.data(withJSONObject: json, options: []) let string = String(data: data, encoding: .utf8)! return try Hero(jsonString: string) If we use withValue from How to simplify struct mutating in Swift then we can mock easily extension Hero { static func mock() -> Hero { return withValue(Hero()) { $0.id = "123" $0.name = "Thor" $0.isInMarvel = true } } }

Issue #305 This year I’m lucky enough to get the ticket to WWDC and I couldn’t be more satisfied. 5 conference days full of awesomeness, talks, labs and networking, all make WWDC special and memorial conference for every attendee. As predicted by many, Marzipan (now officially called Project Catalyst) a technology that could allow iOS apps to be ported to macOS, would be the main topic for this year. But WWDC went more spectacular than that, with dark mode on iOS, independent watchOS apps, and SwiftUI being the star of the show....

Issue #304 If you do VoIP applications, especially with open sources like pjsip, you may encounter kamalio and rtpproxy to serve SIP requests. Due to limitation of NAT traversals, rtpproxy is needed to work around NAT. All SIP handshake requests go through a proxy server, but rtpproxy can also relay voice, video or any RTP stream of data. When I played with rtpproxy, it was before version 2.0 and I need to handle IP handover....

Issue #303 Instead of setting up custom framework and Playground, we can just display that specific view as root view controller window.rootViewController = makeTestPlayground() func makeTestPlayground() -> UIViewController { let content = UserCell() content.nameLabel.text = "Thor" content.streetLabel.text = "Asgard" content.weaponLabel.text = "Hammer" let viewController = UIViewController() viewController.view.backgroundColor = .white viewController.view.addSubview(content) NSLayoutConstraint.on([ content.centerXAnchor.constraint(equalTo: viewController.view.centerXAnchor), content.centerYAnchor.constraint(equalTo: viewController.view.centerYAnchor), content.widthAnchor.constraint(equalTo: viewController.view.widthAnchor, multiplier0.9), content.heightAnchor.constraint(equalToConstant: 200) ] return viewController }