Detecting Touches Which Started Outside of View: A Step-by-Step Guide

Resolving Simultaneous Touches in iOS: A Solution for Right Button Bar and TapGestureRecognizer Touch

Determining Which UIButton is Pressed in a UITableViewCell: Two Approaches

Understanding UIButton Scaling and Gestures in iOS Development: A Guide for Intuitive User Interfaces

Understanding Gestures in iOS: How to Add Long Press and Tap Events to a UIButton