UIStoryboard *story = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

UINavigationController *vc = [story instantiateInitialViewController];

CATransition *animation = [CATransition animation];

[animation setDuration:0.3];//設置動畫時間

animation.type = kCATransitionReveal;//設置動畫類型

animation.subtype = kCATransitionFromRight;

[[UIApplication sharedApplication].keyWindow.layer addAnimation:animation forKey:nil];

self.view.window.rootViewController = vc;