The Ultimate Guide to Data Sharing Between ViewControllers in Swift 5 UIKit
The Ultimate Guide to Data Sharing Between ViewControllers in Swift 5 UIKit Data sharing between ViewControllers is one of the most fundamental concepts in iOS development. Whether you're building a simple app or a complex enterprise solution, understanding how to effectively pass data between screens is crucial. This comprehensive guide covers every method, pattern, and technique for sharing data between ViewControllers in Swift 5 using UIKit. Table of Contents Introduction to Data Flow Method 1: Direct Property Assignment Method 2: Segue-Based Data Passing Method 3: Delegation Pattern Method 4: Closures and Callbacks Method 5: NotificationCenter Method 6: Singleton Pattern Method 7: UserDefaults Method 8: Key-Value Observing (KVO) Method 9: Protocol-Oriented Programming Method 10: Dependency Injection Method 11: Coordinator Pattern Method 12: MVVM Architecture Method 13: Reactive Programming Advanced Patterns Best Practices Introduction to Data Flow Before diving...