UITableViewAutomaticDimension not working in Xcode 6.3

Question

I updated my Xcode to 6.3 along with Swift 1.2, and I made the transition.

Everything works except dynamic row height for table view. I have those on 3 completely different table views, so it probably isn't something else influencing the bug.

I set all of the table views to:

tableView.rowHeight = UITableViewAutomaticDimension

and all of my xib files are properly constrained.

Any ideas?

Americanist

Did you add an estimatedRowHeight? without that it will not work – Generalissimo

Answer 1

I simply added UITableViewAutomaticDimension to estimatedrowforindexpath as well. You can see how it works on the BEAM App (under 'people' category).

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return UITableViewAutomaticDimension;
}

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return UITableViewAutomaticDimension;
}

Landscapist

Yes, you should provide an estimate. Additionally, according to the docs, there are performance implications in using the callbacks instead of the rowHeight and estimatedRowHeight properties. You could set rowHeight to UITableViewAutomaticDimension, then estimatedRowHeight to an arbitrary estimated value. – Divertimento

Answer 2

Estimated row height needs to be provided.

It is better not to implement estimatedHeightForRowAtIndexPath: unless necessary.

estimatedRowHeight is cheaper provided you can come up with a value

    tableView.rowHeight = UITableViewAutomaticDimension
    tableView.estimatedRowHeight = 30 //Provide any appropriate value

Variscite