Change UITableViewCell Height on Orientation Change

Question

I have a UITableView with cells containing variable-height UILabels. I am able to calculate the minimum height the label needs to be using sizeWithFont:constrainedToSize:l

Answer 1

To improve slightly on the answer above from @David and to answer the last comment about how to animate it smoothly during a rotation, use this method:

- (void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    [super willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];
    [self.tableView beginUpdates];
    [self.tableView endUpdates];
}

and of course the height delegate method:

- (CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    if (UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation)) {
        return 171.0f;
    } else {
        return 128.0f;
    }
}