The following describe the direction the content moves–that is, the opposite direction of the viewport. When transitioning into a submenu, use UITransitionShiftLeft; when navigating back, use UITransitionShiftRight.

typedef enum { General/UITransitionShiftImmediate = 0, // actually, zero or anything > 9 General/UITransitionShiftLeft = 1, General/UITransitionShiftRight = 2, General/UITransitionShiftUp = 3, General/UITransitionFade = 6, General/UITransitionShiftDown = 7 } General/UITransitionStyle;

- (void)transition:(UITransitionStyle)style toView:(General/UIView*)view;

Animate only the to view. Will look like a “slide over”.

- (void)transition:(UITransitionStyle)style fromView:(General/UIView*)view toView:(General/UIView*)view;

Animate both views. Will look like a “swap”.

- (void)setDelegate:(id)delegate;

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Delegate methods

- (float)durationForTransition:(General/UITransitionView*)view;

- (void)transitionViewDidStart:(General/UITransitionView*)view;

- (void)transitionViewDidComplete:(General/UITransitionView*)view fromView:(General/UIView*)from toView:(General/UIView*)to;

- (void)transitionViewDidComplete:(General/UITransitionView*)view finished:(BOOL)flag;

- (void)transitionViewDidComplete:(General/UITransitionView*)view;

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I found a more complete version on a Japanese site (http://son-son.sakura.ne.jp/programming/iphone_uitransitionview.html). Now I can’t read Japanese, but they do seem to work!

typedef enum { General/UITransitionNothing = 0, General/UITransitionBothShiftLeft = 1, General/UITransitionBothShiftRight = 2, General/UITransitionBothShiftUp = 3, UITransitionError4 = 4, General/UITransitionCurrentShiftDown = 5, UITransitionError6 = 6, General/UITransitionBothShiftDown = 7, General/UITransitionNextShiftUp = 8, General/UITransitionNextShiftDown = 9 } General/UITransitionStyle;