Swift: how to adapt UITableViewCell height to a UITextView inside it

Question

Which is the simplest way both to adapt UITextView height to its content and then to adapt a UITableViewCell height, which acts as a container, to the same height of that UITextView?

score 2 · Answer 1 · answered Mar 16 '16 at 16:31

2

Set your UITextView number of line to 0. In the viewDidLoad of your Controller that contains the tableView use :

 tableView.estimatedRowHeight = 55.0
 tableView.rowHeight = UITableViewAutomaticDimension

answered Mar 16 '16 at 16:31

Ro22e0

364
1
10

If your text is large, you may have to use a higher number than 55 for the `estimatedRowHeight`. – koen Mar 16 '16 at 16:35
Yeah this value depends of what you have in your UITableViewCell – Ro22e0 Mar 16 '16 at 16:36

score 2 · Answer 2 · edited May 23 '17 at 12:33

To calculate the height of your textview, i think you need to know the height of the text. So on your heightForRowAtIndexPath delegate method, calculate the text height and return it using this:

func heightWithConstrainedWidth(width: CGFloat, font: UIFont) -> CGFloat {
    let constraintRect = CGSize(width: width, height: CGFloat.max)

    let boundingBox = self.boundingRectWithSize(constraintRect, options: NSStringDrawingOptions.UsesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil)

    return boundingBox.height
}

You need to set the textview constrains, bottom, top, leading and trailing to 0, so they adjust to the size of the cell. The code was taken from here.

Swift: how to adapt UITableViewCell height to a UITextView inside it

2 Answers2