My tableView can't scroll smoothly

Question

I have a tableView A above a tableView B, A and B have the same hierarchy, A's height is half of B's height. Now the problem is that A can't scroll smoothly, can someone tell me why.

Answer 1

Check your cellForRowAtIndexPath: method. Keep it as light as possible. Ensure you are re-using cells in it and that no calculations are done in cellForRowAtIndexPath: method.