1、view页面翻转
UIViewAnimationOptions option = _isLeft?UIViewAnimationOptionTransitionFlipFromLeft:UIViewAnimationOptionTransitionFlipFromRight;
// 法一
[UIView transitionFromView:_view1 toView:_view2 duration:.35 options:option completion:nil];
//法二
[UIViewtransitionWithView:self.contentViewduration:.35options:option animations:^{
[self.contentViewexchangeSubviewAtIndex:0withSubviewAtIndex:1];
} completion:^(BOOL finished) {
}];
//法三
[UIViewanimateWithDuration:.55animations:^{
[UIViewsetAnimationTransition:UIViewAnimationTransitionFlipFromLeftforView:self.viewcache:YES];
}];