Gesture Recognizer

What Does Gesture Recognizer Mean?

A gesture recognizer is a code function in the iOS Apple operating system (OS) that helps a mobile device respond to specific touch-screen inputs from a user. A UIGestureRecognizer acts as an abstract base class for various sub-classes in the UIKit – commonly known as gesture recognizers. Developers can use existing gesture recognizers to support responses to a set of common gestures, or create additional gesture recognizers.

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Techopedia Explains Gesture Recognizer

Existing gesture recognizers include support for pinching in and out, panning and dragging and various types of quick taps. There is also a class for a "long press" or "touch and hold" input, as well as rotating and swiping actions on the touchscreen.

Although the gesture recognizer class allows the development of custom responses, experts advise developers to adhere to normal standards expected by users. Changing responses within a given application can profoundly confuse one of the most important, intuitive aspects of the iOS user interface, which takes users some time to learn and should be as easy as possible to understand.

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Margaret Rouse

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.