IOS 转场动画

[UIView transitionFromView:oldVc.view toView:newVc.view duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft completion:nil];

这个函数可以直接把oldVc移除 添加新的newVc,

翻转参数有：

UIViewAnimationOptionTransitionNone = 0 << 20, // default

UIViewAnimationOptionTransitionFlipFromLeft = 1 << 20,

UIViewAnimationOptionTransitionFlipFromRight = 2 << 20,

UIViewAnimationOptionTransitionCurlUp = 3 << 20,

UIViewAnimationOptionTransitionCurlDown = 4 << 20,

UIViewAnimationOptionTransitionCrossDissolve = 5 << 20,

UIViewAnimationOptionTransitionFlipFromTop = 6 << 20,

UIViewAnimationOptionTransitionFlipFromBottom = 7 << 20,