2016-11-21 242 views

回答

1

我认为这是过时和到位的,这种方法是存在的。

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator 
{ 
    [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) 
    { 
     UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; 
     // do whatever 
    } completion:^(id<UIViewControllerTransitionCoordinatorContext> context) 
    { 

    }]; 

    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator]; 
}