chuanyituoku的专栏

To convert our app from portrait into landscape, we have to do three things: 1 Make the view from BullsEyeViewController.xib landscape instead of portrait. 2 Change one line of code in BullsEyeViewC

1 Technically speaking you don’t need to set instance variables to nil in dealloc, because the object will automatically release any instance variables when it gets deleted.