why lable's text can't change, but can debug str? i know queue.sync is excute in main thread，when i sleep in main thread。 class ViewController: UIViewController { let queue = DispatchQueue(label: "queue", qos: .userInteractive) let sem = DispatchSemaphore(value: 0) @IBOutlet var…
I integrated RevenueCat into an app written in Swift and SwiftUI. It worked all well until now. All of the sudden Xcode throws these two errors when building the app: Could not build Objective-C module 'RevenueCat' At the import RevenueCat…
I am trying to perform text validation on my textFields for user login and sign up and I want to display error text depending on what the user inputs. I have been trying to find if there is any sort…
I am having a hard time learning the new Swift async functions and getting them to perform in the correct order. I want to make my loadData() function "await" or WAIT when calling it but when printing the order that…
I am trying to animate text to make it scroll across the screen, (using it to make a stock app), I am unable to get it to go completely off the screen can someone please help... This is what I…
I have an API where I PUT stuff to. I need to make sure to wait until I get an http 200 response from the server, but I don't know how to await that using Alamofire because my response itself…
I am making a section with TextFields and Button("Continue") and then use .disable(isValidAddress) modifier to a whole section to disable the button. The code works well, but I am seeking any solution to make it more succinct with no need…
I'm binding NSValueTransformer programatically to NSTextField property on demand in a macOS application. My question is how can I remove this binding? Relevant code snippet to bind the NSValueTransformer: @IBOutlet var plcAddrLabel: NSTextField! @objc dynamic var registerAddr = Int(1) var…
I currently need to calculate/ find the frame in an overlapped area of two UIViews. As an example, I have attached an image of two UIViews overlapping, as well as a white outline of the area/ frame that I would…
I have this code in ObjC/C: AVCaptureFocusMode GetFocusModeWithString(NSString *mode) { if ([mode isEqualToString:@"locked"]) { return AVCaptureFocusModeLocked; } else if ([mode isEqualToString:@"auto"]) { return AVCaptureFocusModeAutoFocus; } else { @throw [NSError errorWithDomain: @"FocusError", code: 12]; } } It used to be working…