Apr 15, 2024 iOS
SwiftUI app life cycle iOS14 where to put AppDelegate code?
In SwiftUI apps targeting iOS 14 and later, you typically won't have an AppDelegate file by default because SwiftUI apps rely on the @main attribute applied to your app's main entry point, usually a struct that conforms to the App…
Apr 14, 2024 iOS
SwiftUI HStack with wrap and dynamic height
In SwiftUI, achieving a horizontally stacked layout with wrapping behavior (similar to UIStackView with UIStackViewDistribution.fillEqually and UIStackViewAxis.horizontal in UIKit) along with dynamic height can be a bit tricky because SwiftUI's built-in layout system doesn't directly support wrapping behavior. However, you…
Apr 14, 2024 iOS
Call UIKit function from SwiftUI
To call a UIKit function from SwiftUI, you'll typically use a UIViewRepresentable wrapper to create a SwiftUI view that wraps the UIKit component. Within this wrapper, you can call UIKit functions and handle any necessary interactions between SwiftUI and UIKit.…
Apr 13, 2024 iOS
What enables SwiftUI’s DSL?
SwiftUI's Domain-Specific Language (DSL) is enabled by several key language features and design decisions: Swift Language: SwiftUI is built using the Swift programming language, which provides powerful features such as closures, generics, function builders, property wrappers, and protocol extensions. These…
Apr 12, 2024 iOS
How do I create a multiline TextField in SwiftUI?
In SwiftUI, the TextField view doesn't inherently support multiline text input. However, you can achieve multiline text input behavior by using the TextEditor view instead, which is designed for multiline text input. Here's how you can create a multiline text…
Apr 11, 2024 iOS
Move TextField up when the keyboard has appeared in SwiftUI
Certainly! When working with SwiftUI, ensuring that the keyboard doesn’t obscure your text fields is essential for a smooth user experience. Let’s address this issue. To move the TextField up when the keyboard appears, you can follow these steps: Use a ScrollView: Wrap…
Apr 09, 2024 iOS
How to Pass data between view controllers
Passing data between view controllers is a common task in iOS development. There are several ways to achieve this: 1.Using Segues: If you're transitioning between view controllers using segues in Interface Builder, you can override the prepare(for:sender:) method in the…
Apr 02, 2024 iOS
Understanding GCD in Swift: A Comprehensive Interview Guide
Grand Central Dispatch (GCD) is a low-level API pivotal in managing concurrent operations in Swift, offering a balanced approach to executing tasks across multicore hardware in iOS, macOS, watchOS, and tvOS. Known also as Dispatch, it stands at the core…