I want to display, above any other views, even the navigation bar, a kind of “pop-up” view that looks like this: full screen black background with a 0.5 alpha to see the other UIViewController underneath. a UIView window in the middle with some information, (a calendar if you want to know everything). To do that, … Read more
Is there a built-in way to get from a UIView to its UIViewController? I know you can get from UIViewController to its UIView via [self view] but I was wondering if there is a reverse reference? 29 Answers 29
I’m using Xcode 8.0 beta 4. In previous version, UIViewController have method to set the status bar style public func preferredStatusBarStyle() -> UIStatusBarStyle However, I found it changed to a “Get ONLY varaiable” in Swift 3. public var preferredStatusBarStyle: UIStatusBarStyle { get } How can provide the style to use in my UIViewController? 33 Answers … Read more
iOS 13 introduces a new design of modalPresentationStyle .pageSheet (and its sibling .formSheet) for modally presented view controllers… …and we can dismiss these sheets by sliding the presented view controller down (interactive dismissal). Although the new “pull-to-dismiss” feature is pretty useful, it may not always be desirable. THE QUESTION: How can we turn the interactive … Read more
in iOS6 I noticed the new Container View but am not quite sure how to access it’s controller from the containing view. Scenario: I want to access the labels in Alert view controller from the view controller that houses the container view. There’s a segue between them, can I use that? 11 Answers 11
override func preferredStatusBarStyle() -> UIStatusBarStyle { return UIStatusBarStyle.LightContent; } Using the above code in any ViewController to set the statusBar color to White for a specific viewcontroller doesnt work in iOS8 for me. Any suggestions? Using the UIApplication.sharedApplication method, the color changes after required changes in the Info.plist for the whole app. // Change the … Read more
I can’t seem to get the top most UIViewController without access to a UINavigationController. Here is what I have so far: UIApplication.sharedApplication().keyWindow?.rootViewController?.presentViewController(vc, animated: true, completion: nil) However, it does not seem to do anything. The keyWindow and rootViewController seem to be non-nil values too, so the optional chaining shouldn’t be an issue. NOTE: It is … Read more
What I am trying to do is click a button (that was created in code) and have it call up a different view controller then have it run a function in the new view controller. I know it could be done relatively easily in IB but that isn’t an option. An example of what I … Read more
I have been reading a lot about iOS7 UI transition. I am not able to get what these three properties automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars, edgesForExtendedLayout?? For example I am trying to make my view controllers start below the status bar but I am not able to achieve it. 5 Answers 5
Is it possible to cancel a segue in the prepareForSegue: method? I want to perform some check before the segue, and if the condition is not true (in this case, if some UITextField is empty), display an error message instead of performing the segue. 10 Answers 10
