UIApplication
UIApplication is a fundamental class in Apple's Cocoa and Cocoa Touch frameworks. It serves as the central point of control and management for an application's run loop and event handling. When an application launches, an instance of UIApplication is created, and it becomes responsible for coordinating the flow of events and managing the application's overall state.
The UIApplication object acts as the delegate for the application, responding to various system-level events such
Key responsibilities of UIApplication include registering for and receiving push notifications, managing the application's badge number,