Learn how to build a custom passcode input view in Swift that shows the keyboard, handles user input, and displays PIN dots with easy-to-follow UIKeyInput and UIView techniques.

Build a passcode view with Swift

Learn how to create circular text in SwiftUI by splitting strings, measuring character sizes with GeometryReader, and rotating each character to form a smooth circle with adjustable spacing.

Create circular text using SwiftUI

Learn the difference between data race and race condition in multithreaded programming, and discover how mutex and atomic operations ensure data safety by controlling access to shared resources.

Data race and race condition

Learn how to create a custom watch face with circular bezel, ticks, numbers, and moving hands using SwiftUI Shapes, Paths, and real-time updates in this step-by-step guide.

Draw watch face using SwiftUI

Learn the difference between CoroutineScope and CoroutineContext, understand the Job lifecycle states, and discover how cooperative cancellation works in Kotlin coroutines for effective concurrency control.

Kotlin coroutine lifecycle

Learn Kotlin coroutines basics, structured concurrency, and how lightweight threads improve concurrent programming with examples of coroutine cancellation and job lifecycle.

Kotlin coroutine

Learn how to recreate the Apple Find Me Bottom Menu view with Swift by building a draggable bottom menu that smoothly resizes between collapsed, half-expanded, and expanded states.

Reproduce Apple Find Me bottom menu view

Learn how to simplify Android app navigation with Jetpack navigation Component, handling fragment transitions, dynamic start destinations, modular flows, and integration with Firebase Analytics.

Scale up application using Jetpack navigation

Learn the best ways to securely manage and store secrets in iOS apps, from code obfuscation to why keeping secrets off the client is the safest approach for developers.

Secret management on iOS

Learn the key differences between stateless and stateful widgets in Flutter, including how each manages UI state and when to use them for dynamic or static app interfaces.

Stateless and stateful widgets in Flutter

Learn how to use Swift’s @resultBuilder and UIKit Builder pattern to create flexible container views like UIStackView with clean, DSL-style code for easier UI development in Swift.

Swift 5 4 resultbuilder

Learn how to build powerful Xcode command line tools using Swift, covering CLI app structure, commands, options, flags, and creating custom build tools for automation and safer coding.

The structure of the command line app

Learn how to build reusable, flexible UIKit user interfaces using the builder pattern with Swift extensions and @discardableResult for cleaner, declarative UI code.

UIKit builder pattern

Learn how to implement XPC Services for secure interprocess communication on macOS, enabling modular app design, crash isolation, and efficient resource management with NSXPCConnection and launchd.

Topics > Mobile

2022

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2019

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