How update a label periodically on iOS (every second)? [duplicate]

The problem is that a scheduledTimer will not get called while the main thread is tracking touches. You need to schedule the timer in the main run loop. So instead of doing [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateLabel:) userInfo:nil repeats:YES]; use NSTimer* timer = [NSTimer timerWithTimeInterval:1.0f target:self selector:@selector(updateLabel:) userInfo:nil repeats:YES]; [[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];

Is there an way to make an invisible UIButton that will still “be there” and catch touch events for my UIImageView?

You should be able to set the button’s ‘Type’ to Custom in Interface Builder, and it will not display any text or graphical elements over the UIImageView. This way, you don’t need to adjust the alpha. If the view is built from code, use: button = [UIButton buttonWithType:UIButtonTypeCustom];

How to use a SwiftUI view in place of table view cell

Thanks for answering your own question here. Your solution helped me make a generic HostingTableViewCell class. I’ll post it here if anyone finds this question on Google like I did. import SwiftUI class HostingTableViewCell<Content: View>: UITableViewCell { private weak var controller: UIHostingController<Content>? func host(_ view: Content, parent: UIViewController) { if let controller = controller { … Read more

Mac-catalyst – minimum window size for Mac catalyst app

Just add the following chunk of code to your application:didFinishLaunchingWithOptions method (for UIKit projects) or to scene(_:willConnectTo:options:) (for SwiftUI projects): UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.forEach { windowScene in windowScene.sizeRestrictions?.minimumSize = CGSize(width: 480, height: 640) } PS: you can also set the maximumSize property there PS2: If you set both minimumSize and maximumSize to the … Read more