How do I get LineBreakMode to work in UITableViewCell? iOS - Swift - ios

Question

I have a header and a body inside my tableviewcells. I'm trying to get the body to wrap but I'm having issues.
This is the code I'm using in my view controller
#IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCellWithIdentifier("mainCell") as? mainCell {
cell.mainHeader.text = (mainHeader[indexPath.row])
cell.mainBody.text = (mainBody[indexPath.row])
cell.mainBody.numberOfLines = 0
cell.mainBody.lineBreakMode = NSLineBreakMode.ByWordWrapping
return cell
} else {
return mainCell()
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return mainHeader.count
}
}
I searched and thought that the numberOfLines = 0 and lineBreakMode = NSLineBreakMode would work but it's obviously not.
Sorry if this is simple, thanks in advance.
#Daven
I know this probably won't help, but I don't think I have that or if I do I'm unsure of what it is. Also updated original code with everything that is in my VC but the vars
I have this for my custom cell
import UIKit
class mainCell: UITableViewCell {
#IBOutlet weak var mainHeader: UILabel!
#IBOutlet weak var mainBody: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
func configureCell (text:String) {
mainHeader.text = text
mainBody.text = text
}
}

Answer 1

To make your cell expand as its label grows, you'll need to make sure you've done a few things. Set your tableView's estimatedRowHeight to a value, like
tableView.estimatedRowHeight = 200.0;
tableView.rowHeight = UITableViewAutomaticDimension
or via this method:
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 200.00
}
You also have the option of using this method, but it's not necessary if all your cells are going to vary in height:
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
You may also find this tutorial helpful (this is what I used :)). It shows what your autolayout constraints should look like. More information about self-sizing cells is also here.

Answer 2

Assuming you want your cell to expand when the text is longer than one line, you want to set the cell height to be automatic using the delegate function:
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
and set the estimated row height using
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return currentInfoSelectorOption.rowHeight + 100
}
Then use autolayout in your cell to set the height. You can do this by setting the top and bottom distance constraints of the cell to the label as a constant value and setting the labels number of lines to 0. This should allow the label to expand and push the cell with it