Automated Row height in table cell - ios

Question

I am trying to expand my cell when there is extra text inputed. I do not want "..." at the end I would like the cell to automatically expand. I have taken these two steps below but it is not working.
Step 1
self.tableView.dataSource = self
self.tableView.delegate = self
tableView.estimatedRowHeight = 44
tableView.rowHeight = UITableViewAutomaticDimension
Step 2
messageLabel.numberOfLines = 0
For some reason my cell is not expanding what am I doing wrong?
import UIKit
import Foundation
struct postStruct {
let username : String!
let message : String!
let photoURL : String!
}
class GeneralChatroom: UIViewController, UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate {
#IBOutlet weak var messageTextField: UITextField!
#IBOutlet weak var tableView: UITableView!
var generalRoomDataArr = [postStruct]()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.dataSource = self
self.tableView.delegate = self
tableView.estimatedRowHeight = 44
tableView.rowHeight = UITableViewAutomaticDimension
}
#IBAction func backButtonPressed(_ sender: UIButton) {
self.performSegue(withIdentifier: "BackToRoom", sender: nil)
}
//Message Send button is pressed data uploaded to firebase
#IBAction func sendButtonPressed(_ sender: UIButton) {
let message : String = self.messageTextField.text!
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return generalRoomDataArr.count // your number of cell here
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
//Set message label to display message
let messageLabel = cell?.viewWithTag(2) as! UILabel
messageLabel.text = generalRoomDataArr[indexPath.row].message
messageLabel.numberOfLines = 0
// your cell coding
return cell!
}
}//END CLASS
UPDATE:
I have the current constraints but my dynamic cell growth is not working. My cell is still showing "..." Can anyone help me understand why? I tried reset to suggested constraints but it is not working.

Answer 1

Make sure you've auto layout for the custom UITableViewCell. Change the estimatedRowHeight, try this:
tableView.estimatedRowHeight = 200

Answer 2

You can use the delegate method of UITableView:
func tableView(_ tableView: UITableView,heightForRowAt indexPath: IndexPath) -> CGFloat
{
return .AutomaticDimension
}
func tableView(_ tableView: UITableView,estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat
{
return 60
}
But first you must set the autolayout constraint for the label w.r.t to the content view of TableViewCell.

Answer 3

Swift 2.3
// MARK: - TableViewDelegate Setup
extension NotificationVC : UITableViewDelegate,UITableViewDataSource {
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
}