Chapter 5
Handling User Touches
The iPhone was a drastic change from every computing platform that came before it in many ways, but none more so than its lack of a mouse or keyboard. Instead of responding to keyboard key presses, mouse clicks, and mouseover events, the iPhone responds to touch. Designing a user interface around touch is more than converting from clicks to taps. The iPhone offers direct manipulation: when you place your finger on a message in Mail and move it down an inch, the contents of the message move down an inch as well. Direct manipulation effectively removes a layer of abstraction between the user and the content dating back to the very first graphical user interfaces (GUIs): the scroll bar. As a result, iOS and other ...
Get Learn Cocoa Touch for iOS now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
