英文原版Learn Cocoa Touch for iOS 1st Edition

TheCocoaTouchframeworksandAPIsarepowerfultoolsforcreatingnativeiOSapps,andthey'refreewithXcode,Apple'sdevelopmentenvironment.Ifyou'vealreadygottenyourfeetwetwithObjective-C,andyou'rereadytolearnmoreaboutiOSdevelopment,thenLearnCocoaTouchforiOSisthebook