How to load UITableViewCell height from a nib file?

Yes, you need to implement heightForRowAtIndexPath. It is called to quickly calculate heights of rows, withour creating them. So, you shouldn't perform any time-consuming operations in that heightForRowAtIndexPath.

An example implementation I used in my UITableViewController: -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return 70.0; }.

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