... through the iOS Application Programming Guide” in the iOS Reference Library for some tips and advice on how to make great iOS applications:https://developer.apple.com/library /ios/ #documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/Introduction/Introduction.htmlOne ... graphical interface of your iOS applications. In thischapter, you will learn how to use all available gesture recognizers in the iOS SDK,with working examples tested on iOS 3 and iOS 4 on different ... of front- and back-facingcameras on an iOS device. Some of the recipes in this chapter are specific to iOS 4, with the rest working on both iOS 3 and iOS 4. You will also learn how to accessthe...