uiscrollview 滚动

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{   
    CGRect bounds = self.scrollview.bounds;
    CGPoint offset = self.scrollview.contentOffset; 
    UIEdgeInsets inset = self.scrollview.contentInset; 
    CGFloat currentOffset = offset.x + bounds.size.width - inset.bottom; 
    NSLog(@"%2f",currentOffset); 
}