iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK

Types of Gesture Recognizers

Gesture recognizers fall into two general categories, as defined by Apple:

Discrete: Discrete gesture recognizers are intended to handle cases in which the interaction is quick and simple, like a tap. In that case, the app really needs to know only that the tap occurred, and then can complete the desired action.

Continuous: Continuous gesture recognizers handle cases in which the interaction needs to keep getting information as the gesture proceeds, as in a pinch or rotation. In those cases, the app will likely require ...