ios:ScrollView联动效果

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    float bigX = _fScrollView.bounds.size.width/_sScrollView.bounds.size.width;
    float littleX = _sScrollView.bounds.size.width/_fScrollView.bounds.size.width;
    if (scrollView == _fScrollView) {
        _sScrollView.delegate = nil;
        _sScrollView.contentOffset = CGPointMake(scrollView.contentOffset.x * littleX, scrollView.contentOffset.y);
        _sScrollView.delegate = self;
    }
    else
    {
        _fScrollView.delegate = nil;
        _fScrollView.contentOffset = CGPointMake(scrollView.contentOffset.x * bigX, scrollView.contentOffset.y);
        _fScrollView.delegate = self;
    }
}