问题
In an iPad application with a UINavigationController, everything works in portrait mode but in landscape mode the back button sometimes only goes back half a level. That is to say, on the first press the title bar animates as if it was popping a controller, and on the second press it animates the content popping.
Has anyone found a solution to this? The contradictory solution in this question did not help. I have a shouldAutorotate method in the navigation controller but no others.
-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)inOrientation {
return YES;
}
Edit:
actually, the first click pops the content and the second click pops the navigation bar.
回答1:
As David F figured out but I did not grok, every view controller must implement a shouldAutorotate method if the navigation controller does. Even though it will go ahead and rotate, and you do not need it on the iPhone, somehow the iPad thinks a view controller needs a double pop if it does not respond to that method with the same result as the navigation controller.
来源：https://stackoverflow.com/questions/2770477/uinavigationcontroller-back-button-half-works-in-ipad-landscape-orientation