scrollToRowAtIndexPath:atScrollPosition:animated scrolling too slow

Question

Based on the page change of a paged UIScrollView, I'm calling scrollToRowAtIndexPath:atScrollPosition:animated to the table specifics for that page that's in display.

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    CGFloat pageWidth = self.scrollView.frame.size.width;
    int page = floor((self.scrollView.contentOffset.x - pageWidth/2)/pageWidth)+1;
    self.pageControl.currentPage = page;
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:page];
    [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}

However, the animation of the automatic scrolling is happening too slow. Is there a way to make this animation more snappy?

Are you talking about running on the device or the simulator? — Hermann Klecker, Jun 12 '13 at 17:27
Try to use `scrollToRowAtIndexPath` without animation and add that line into a `UIView` animation block for which you can set the animation duration. — danypata, Jun 12 '13 at 18:38
I added my comment as an answer, if you want you can mark it as accepted so your question will not appear on the unanswered section. — danypata, Jun 13 '13 at 06:42

score 19 · Accepted Answer · answered Jun 13 '13 at 06:41

19

A fast solution might be:

[UIView animateWithDuration:aSmallValue animations:^{
        [self.tableView scrollToRowAtIndexPath:indexPath
                              atScrollPosition:UITableViewScrollPositionTop 
                                      animated:NO];
}];

answered Jun 13 '13 at 06:41

danypata

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@danypata I want to know the difference between your method and Oscar Swanros's method? – BlackMamba Jan 17 '14 at 05:37
The problem was that the scroll is to slow for the `scrollToRowAtIndexPath", "scrollToRowAtIndexPath" speed is computed depending on the content size, but if you want the same speed for any content size, then you can use my method. – danypata Jan 17 '14 at 10:05
1

Even with no animation it's slow for me – Rodrigo Ruiz May 29 '16 at 08:26

scrollToRowAtIndexPath:atScrollPosition:animated scrolling too slow

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