UITableView scrollToRowAtIndexPath scrolls to wrong offset with estimatedRowHeight on iOS 7

Question

I am using the estimatedRowHeight method from UITableView in iOS 7, which works perfectly for fast loading of a UITableView with 5000 rows of variable heights.

Answer 1

It's not the prettiest solution but I use a workaround for this issue who do the trick. Always update the estimatedRowHeight to the tallest computed cell and then use something like this :

1. Scroll the content of the tableView to offset zero.

2. Finish by calling scrollToRowAtIndexPath to index path zero.

   [self.tableView setContentOffset:CGPointZero animated:YES];
   dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
       [self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                             atScrollPosition:UITableViewScrollPositionTop
                                     animated:YES];
   });
   

As result the tableView should scroll to the top quite smoothly.