Paul Hegarty demos the FaceViewController MVC's model. He then covers getting multitouch input from users and using multiple MVCs with the tab bar, navigation, and split view controllers.
All the lecture slides pdfs, demo codes and reading assignments can be found here:
https://drive.google.com/open?id=0B23KBOrLr6lIVWh5TkJMdk95V3M
https://itunes.apple.com/cn/course/5-gestures-and-multiple-mvcs/id1198467120?i=1000381780707
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