Beginning iPhone Development with SwiftUI: Exploring the iOS SDK

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

W. WangBeginning iPhone Development with SwiftUIhttps://doi.org/10.1007/978-1-4842-7818-5_11

11. Touch Gestures

Wally Wang¹  

(1)

San Diego, CA, USA

 

Allowing the user to control an app through Buttons, Toggles, or Menus is handy, but all of these controls take up space on the screen. To eliminate the need for extra objects on the user interface, your app can also detect and respond to touch gestures that allow direct manipulation of items displayed on the screen.

The different types of touch gestures that an iOS app can detect and respond to include

• Tap – A fingertip touches the screen and lifts up.

• Pinch – Two fingertips come together or move apart.

• Rotation – ...