iOS SDK: Playing Touch Tones with the Audio Toolbox Framework | Envato Tuts+Welcome to the seventh installment in our series on how to both design and build a 1980s version of the iOS “Phone” app. In this tutorial, I’ll be demonstrating how to play the appropriate audio tone for each number on the phone keypad. Final App Preview This is a snapshot of what we will be building over the course of this series: Before You Begin. . . This is a multi-part series designed to teac
