iOS 相机打开动画效果

- (void)addHollowOpenToView:(UIView *)view

{

//注释掉拍照的动画

       CATransition *animation = [CATransitionanimation];

        animation.duration =0.5f;

        animation.delegate =self;

        animation.timingFunction =UIViewAnimationCurveEaseInOut;

        animation.fillMode =kCAFillModeForwards;

        animation.type =@"cameraIrisHollowOpen";

        [view.layeraddAnimation:animation forKey:@"animation"];

}