动画编程2－－使用动画进行视图过渡

[UIView transitionWithView:_myView duration:2.0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
CGRect temp = _myView.frame;
temp.origin.x += 100;
_myView.frame = temp;
[UIView transitionWithView:_mySecondView duration:1.0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
CGRect temp = _mySecondView.frame;
temp.origin.x += 200;
_mySecondView.frame = temp;
} completion:nil];
} completion:nil];

UIView *view = [[UIView alloc]initWithFrame:CGRectMake(50, 250, 150, 50)];
view.layer.cornerRadius = 15;
view.backgroundColor = [UIColor purpleColor];
[UIView transitionFromView:_myView toView:view duration:2.0 options:UIViewAnimationOptionTransitionFlipFromTop completion:nil];