ios - UITableViewRowAnimation is ignored

Question

I'm using NSFetchedResultsController to populate my table. The data in my table is sorted according to the timestamp in the ascending order (latest message at the bottom). More data is loaded via "infinite scroll" to the top: e.g. when user scrolls past the top, more messages are loaded. My NSFetchedResultsControllerDelegate is defined as usual, as recommended in the apple documentation: new rows are inserted via

- (void)controller:(NSFetchedResultsController*)controller
   didChangeObject:(id)anObject
       atIndexPath:(NSIndexPath*)indexPath
     forChangeType:(NSFetchedResultsChangeType)type
      newIndexPath:(NSIndexPath*)newIndexPath
{
    switch(type) {
        case NSFetchedResultsChangeInsert:
            NSLog(@"insertion at row %d", newIndexPath.row);
            [self.table insertRowsAtIndexPaths:@[newIndexPath]
                              withRowAnimation:UITableViewRowAnimationNone];

            break; 

Now here is my problem: when new rows are inserted, they are always animated as sliding "down". On the infinite scroll upwards it looks bad. That happens regardless of whether I pass UITableViewRowAnimationNone, UITableViewRowAnimationTop or UITableViewRowAnimationBottom as the parameter - that option seems to be ignored entirely.

Any ideas how to animate the table properly?

Answer 1

Please try as below.

[CATransaction setDisableActions:YES];
[self.table insertRowsAtIndexPaths:@[newIndexPath] withRowAnimation:UITableViewRowAnimationNone];
[CATransaction setDisableActions:NO]; // reset to original value