You should always use Keychain to store usernames and passwords, and since it’s stored securely and only accessible to your app, there is no need to delete it when app quits (if that was your concern). Apple provides sample code that stores, reads and deletes keychain items and here is how to use the keychain … Read more
Apple’s Technote on App Transport Security is very handy; it helped us find a more secure solution to our issue. Hopefully this will help someone else. We were having issues connecting to Amazon S3 URLs that appeared to be perfectly valid, TLSv12 HTTPS URLs. Turns out we had to disable NSExceptionRequiresForwardSecrecy to enable another handful … Read more
And finally… there is CACornerMask in iOS11! With CACornerMask it can be done pretty easy: let view = UIView() view.clipsToBounds = true view.layer.cornerRadius = 10 view.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner] // Top right corner, Top left corner respectively
In Xcode 8, you can click on the “Debug Memory Graph” button, in the debug toolbar (shown at the bottom of the screen): Just identify the object in the left panel that you think should have been deallocated, and it will show you the object graph (shown in the main canvas, above). This is very … Read more
First, some general definitions (specific to iOS): Static library – a unit of code linked at compile time, which does not change. However, iOS static libraries are not allowed to contain images/assets (only code). You can get around this challenge by using a media bundle though. A better, more formal definition can be found on … Read more
This answer is outdated from iOS 14 with the addition of compositional layouts. Please consider updating the new API Updated for Swift 5 preferredLayoutAttributesFittingAttributes renamed to preferredLayoutAttributesFitting and use auto sizing Updated for Swift 4 systemLayoutSizeFittingSize renamed to systemLayoutSizeFitting Updated for iOS 9 After seeing my GitHub solution break under iOS 9 I finally got … Read more
In Sprite Kit do not use NSTimer, performSelector:afterDelay: or Grand Central Dispatch (GCD, ie any dispatch_… method) because these timing methods ignore a node’s, scene’s or the view’s paused state. Moreover you do not know at which point in the game loop they are executed which can cause a variety of issues depending on what … Read more
Swift 4.0 & Xcode 9.0+: Send(Post) Notification: NotificationCenter.default.post(name: Notification.Name(“NotificationIdentifier”), object: nil) OR NotificationCenter.default.post(name: Notification.Name(“NotificationIdentifier”), object: nil, userInfo: [“Renish”:”Dadhaniya”]) Receive(Get) Notification: NotificationCenter.default.addObserver(self, selector: #selector(self.methodOfReceivedNotification(notification:)), name: Notification.Name(“NotificationIdentifier”), object: nil) Function-Method handler for received Notification: @objc func methodOfReceivedNotification(notification: Notification) {} Swift 3.0 & Xcode 8.0+: Send(Post) Notification: NotificationCenter.default.post(name: Notification.Name(“NotificationIdentifier”), object: nil) Receive(Get) Notification: NotificationCenter.default.addObserver(self, selector: #selector(YourClassName.methodOfReceivedNotification(notification:)), name: Notification.Name(“NotificationIdentifier”), … Read more
EITHER try this library: http://github.com/erica/uidevice-extension/ (by Erica Sadun). (The library is 7-8 years old, and hence is obsolete) (Sample Code): [[UIDevice currentDevice] platformType] // ex: UIDevice4GiPhone [[UIDevice currentDevice] platformString] // ex: @”iPhone 4G” OR You can use this method: You can get the device model number using uname from sys/utsname.h. For example: Objective-C #import <sys/utsname.h> … Read more
Xcode building for iOS Simulator, but linking in an object file built for iOS, for architecture ‘arm64’