uiview 的transitionWithView 方法使用

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [UIView transitionWithView:_imageViewFirst duration:1.0f options:UIViewAnimationOptionTransitionFlipFromTop animations:^{
        _imageViewFirst.alpha=;
        _imageViewFirst.center=CGPointMake(, );

    } completion:^(BOOL finished) {

    }];

}