将UITableView滚动到特定部分

Question

I want my UITableView to scroll to a particular section, how do i achieve this. I have tried a lot of suggestions on SO, and for some strange reason nothing seems to work. Any help is appreciated. Thank you.

Answer 1

Try by using below lines of code:

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        NSInteger Section=3;//Change as required
        NSInteger Row=0;//Change as required

        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:Row inSection:Section];

        [tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];

});

Edit:

use the following NSIndexPath to scroll to a section containing 0 rows:

[NSIndexPath indexPathForRow:NSNotFound inSection:section]

scroll the tableview so the desired section is visible but not necessarily at the top or bottom:

CGRect sectionRect = [tableView rectForSection:indexOfSectionToScrollTo];
[tableView scrollRectToVisible:sectionRect animated:YES];

to scroll so the section is at the top do this:

CGRect sectionRect = [tableView rectForSection:indexOfSectionToScrollTo];
sectionRect.size.height = tableView.frame.size.height;
[tableView scrollRectToVisible:sectionRect animated:YES];

Check answer here: How do I scroll a UITableView to a section that contains no rows?

Answer 2

尝试使用这个

[self.tableView scrollToRowAtIndexPath:YOUR_INDEX_PATH_OF_SECTION atScrollPosition:UITableViewScrollPositionTop animated:YES]