Put [self.view layoutIfNeeded]
in the -viewDidLoad
implementation for the view controller that's being shown via the curl animation. This makes the buttons & their contents lay out once before the animation starts instead of trying to do its layout (and redo it as things change around it) during the animation.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…