First off as I explain in this answer, you need to drag the segue from the overall UIViewController to the next UIViewController, i.e. you shouldn’t specifically connect the UIButton (or any IBOutlet for that matter) to the next UIViewController if the transition’s conditional: You’ll also need to assign an identifier to the segue. To do … Read more
I’d recommend using supportedInterfaceOrientationsForWindow in your appDelegate to allow rotation only in that specific view controller, ex: Swift 4/Swift 5 func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask { // Make sure the root controller has been set // (won’t initially be set when the app is launched) if let navigationController = window?.rootViewController as? … Read more
What’s happened is that Seed 5 broke the mechanism whereby a view controller can find its xib by name, if the view controller is a Swift class. The reason is that the name of the class, in Swift’s mind, is not the same as the name you gave it (and the name you gave the … Read more
Based upon a review of your code, a few comments: You generally don’t need to adjust constraints when a view appears. If you find yourself doing this, it often means that you haven’t configured your storyboard correctly (or at least, not efficiently). The only time you really need to set/create constraints is either (a) you’re … Read more
A UIViewController cannot display anything; it simply coordinates the display of a UIView. So the actual pictures are going to need to be done in a UIView. In addition, your UIView is responsible for recognizing touches, gestures, etc. That’s where it ends, though; the actual reaction of your program should be up to the UIViewController. … Read more
This code works pretty well for your purpose, I use it for one of my new apps. It uses the new UIViewController containment APIs that allow UIViewControllers inside your own UIViewControllers without the hassles of manually forwarding stuff like viewDidAppear: – (void)viewDidLoad { [super viewDidLoad]; // add viewController so you can switch them later. UIViewController … Read more
If you’re in a Navigation Controller: ViewController *viewController = [[ViewController alloc] init]; [self.navigationController pushViewController:viewController animated:YES]; or if you just want to present a new view: ViewController *viewController = [[ViewController alloc] init]; [self presentViewController:viewController animated:YES completion:nil];
Just found out you need to use presentingViewController in iOS 5. [self.presentingViewController.presentingViewController dismissModalViewControllerAnimated:YES]; A -> B -> C Running the above code in modal C will take you back to A
View controllers are not just for the top level scene. We often place view controllers within view controllers. It’s called “view controller containment” and/or “child view controllers”. (BTW, view controller containers are, in general, a great way to fight view controller bloat in traditional UIKit apps, breaking complicated scenes into multiple view controllers.) So, Go … Read more
-initWithNibName:bundle: is the designated initializer for UIViewController. Something should eventually call it. That said, and despite Apple’s examples (which favor brevity over maintainability in many cases), it should never be called from outside the view controller itself. You will often see code like this: MYViewController *vc = [[MYViewController alloc] initWithNibName:@”Myview” bundle:nil]; I say this is … Read more