Blog by Jeevan

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Showing posts with the label wwdc

WWDC26: What's New in SwiftUI — 10 Features Every iOS Developer Should Know

SwiftUI continues to mature with every WWDC, and this year is no exception. At WWDC26, Apple introduced several improvements that make SwiftUI faster, more flexible, and easier to use across Apple platforms. Some updates are visual, while others solve long-standing pain points like image caching, compile-time performance, and custom interactions. Here are the 10 biggest SwiftUI updates from WWDC26 that every iOS developer should know. 1. Automatic Adoption of the New Liquid Glass Design Apps built with Xcode 27 automatically adopt Apple's refreshed Liquid Glass appearance. Apple has also introduced new APIs to better integrate with the updated design language: appearsActive environment value Prominent tabs Toolbar overflow menus Auto-minimizing navigation bars while scrolling The best part? Most apps require little or no code changes to benefit from the new appearance. 2. iPhone Apps Are Now Resizable SwiftUI now supports resizable iPhone apps, making layouts much more adaptable...

WWDC 2025 Sessions Summary: What's new in SwiftUI ?

This summary covers key updates from WWDC 2025 sessions to build a SwiftUI app with the new design. 1. Liquid Glass Liquid Glass is a new adaptive material inspired by glass and liquid, dynamically changing based on the content underneath. This SwiftUI’s new design system brings a fluid, glassy look across platforms, with tab bars, toolbars, and navigation views adopting Liquid Glass automatically. UI elements like sliders, toggles, and pickers animate fluidly with the new material, enhancing interactivity. 2. Background Extension Effect The NavigationSplitView now features a floating Liquid Glass sidebar and allows for safe-area background extension using backgroundExtensionEffect . 3. Tabbar Minimize Behavior A new tab bar behavior enables it to float above contents and minimize on scroll with tabBarMinimizeBehavior , keeping content in focus. Developers can add bottom accessory views to the tab bar using tabViewBottomAccessory , which adapts to collapse states. 4. Sheets b...

Implementing autocompletion OTP field in iOS

Long waiting is over. !! iOS 12 brings Autofill for OTP text field which is close to Android provided a decade back. Previously in iOS we used to toggle between OTP text screen and message inbox. Which was hard to remember and time consuming resulting a bad user experience. Personally, I have been asked from the client/customer couple of times to implement autocompletion for OTP field and took me a lot of time to convey that it is not possible in iOS. Why Autofill was not possible previously? We all know that Apple gives at most care for user privacy. When we see iOS architecture, each individual app is like a separate island. There is no inter-app bridge between apps (exception for Keychain and URLSchemes APIs which gives very limited scope). Thus we cannot read message content from inbox. Where to start Autofilling? First of all, the target SMS need to have the OTP Code with prefix string "Code" or "Passcode"on its message content. Beware of OTP c...

Animating label text update - choosing a better way

Recently I published a countdown app . At one point of development - I have to show a timer on a UILabel which ticks on each seconds. As usual I started setting text to a label object - self .timerLabel.text = someString Easy piece of cake right !? But wait ... it won't take much user attention when timer ticks on every seconds. So I decided to make use of a simple animation while label gets text update. I found there are dozens of ways to animate a label. In this short article, I listed 3 best way you can animate text on a label. ( Spoiler Alert 👀- I decided to go with 3rd option) 1. Fade In - Fade out animation : CATransition class has got transition type `fade`. With timing function of CATransition - I was able to see the below result. let animation: CATransition = CATransition () animation.timingFunction = CAMediaTimingFunction (name: CAMediaTimingFunctionName .easeInEaseOut) animation.type = CATransitionType .fade animation.subtype = C...

Cached Async Image in SwiftUI

SwiftUI’s AsyncImage is handy, but every time your view appears, it refetches the image—leading to flicker, delays, and unnecessary network use. What if you could fetch once, then reuse instantly? That's exactly what the Cached Async Image delivers: a memory-powered caching layer that keeps SwiftUI image loading smooth, snappy, and resilient. First a simple in-memory cache without disk persistence. This will be thread-safe and auto-purges under memory pressure. A Singleton wrapping NSCache for URL → UIImage caching as follows : final class ImageCache { static let shared = ImageCache() private init() {} private let cache = NSCache<NSURL, UIImage>() func image(for url: URL) -> UIImage? { cache.object(forKey: url as NSURL) } func insertImage(_ image: UIImage?, for url: URL) { guard let image else { return } cache.setObject(image, forKey: url as NSURL) } func clearAll() { ...

Prevent Navigationbar or Tabbar overlapping Subview - solved for Card view

Recently, I started with a Card view added as a subview of UIView in a view-controller. When a view controller created along subviews, it tends to use entire screen bounds and also slips behind Tab bar or Navigation bar. In my current situation, it's second case. Casually new iOS developers will write a patch by additional value for coordinate y and subtracting bar height from its size. A lot of them posted in SO threads too : How to prevent UINavigationBar from covering top of view? View got hidden below UINavigationBar iOS 7 Navigation Bar covers some part of view at Top So, how I got solved ? self.edgesForExtendedLayout = [] This will avoid all subviews in a view controller get behind any bars. Read full apple documentation on here. Full Source code below : //Simple view controller where its view layed-out as a card. class WidgetCardViewController : UIViewController { var containerView = UIView () //MARK:- View Controller Life Cyc...

UICollectionViewCell shows with wrong size on First time - Solved

We commonly use Collection view where its cell size calculated run time. The flow layout delegate is responsible to return individual cell sizes. BUT in most of the cases, delegate method `collectionView: layout sizeForItem:` expects cell size too early. Before generating actual cell size. extension YourViewController : UICollectionViewDelegateFlowLayout { func collectionView ( _ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { return CGSize (width: externalWidth, height: externalHeight) } } For instance, if a cell size depends on external view and its frame is not yet ready - results with wrong (or outdated) cell size. Typically happens for the first time view controller laid out all views. You can find similar queries in StackOverflow community : Collection view sizeForItemNotWorking UICollectionViewCell content wrong size on first load How to refresh UICollec...