table view with dynamic table rows and with NSLayoutConstraint’s programmatically - ios

Question

I implemented a table view with dynamic table rows and with NSLayoutConstraint’s programmatically. However, I encounter differences between the iPhone 5/5s/6s and iPhone 6s plus simulator.
What I basically did:
Creating a UIView (containerView) on a ScrollView (scrollView)
Creating a UITableView (infoTableView) on the containerView
Defining dynamic row heights for infoTableView
Registering a UITableViewCell (InfoTableViewCell) on infoTableView
Creating two UILabels (infoLabel and infoText) on a InfoTableViewCell
Defining horizontal and vertical constraints to infoText
When running this code below on an iPhone 5/5s/6s simulator the table row height is determined properly, and the labels are properly constrained to the table row. However, when I simulate the code on an iPhone 6 the data is not displayed correctly.
See Example.
How could this difference be explained? Are the constraints set correctly? Or am I missing some code?
A related question is about the total tableview height. I set this height in viewDidLayoutSubviews, but it is currently set to constant value since the TableHeight seems not yet been initialized here. How should the height be determined?
I hope that anybody could help.
My code:
import UIKit
class ViewController: UIViewController,UIScrollViewDelegate, UITableViewDataSource, UITableViewDelegate {
var scrollView : UIScrollView!
var containerView : UIView!
var infoTableView: UITableView!
var infoLabels = [String]()
var infoData = [String]()
override func viewDidLoad() {
super.viewDidLoad()
scrollView = UIScrollView()
scrollView.delegate = self
scrollView.contentSize = CGSizeMake(view.bounds.width, 1000)
containerView = UIView()
infoLabels = ["Label1", "Label2", "Label3"]
infoData = ["Label1Test1 Label1Test2 Label1Test3 Label1Test4 Label1Test5",
"Label3Test1 Label2Test2 Label2Test3 Label2Test4 Label2Test5",
"Label3Test1 Label3Test2 Label3Test3 Label3Test4 Label3Test5"]
// Create information TableView
infoTableView = UITableView()
infoTableView.registerClass(InfoTableViewCell.self, forCellReuseIdentifier: "Cell")
infoTableView.delegate = self
infoTableView.dataSource = self
infoTableView.estimatedRowHeight = 25
infoTableView.rowHeight = UITableViewAutomaticDimension
containerView.addSubview(infoTableView)
scrollView.addSubview(containerView)
view.addSubview(scrollView)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
scrollView.frame = view.bounds
containerView.frame = CGRectMake(0, 0, scrollView.contentSize.width, scrollView.contentSize.height)
// --------------------------------------------
// How to determine height of table view??????
let infoTableHeight: CGFloat = 200
//infoTableView.frame.size.height => Is nil during initialization!!!
infoTableView.frame = CGRectMake(5, 50, self.view.bounds.width - 10, infoTableHeight)
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return infoData.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let textCellIdentifier = "Cell"
let cell = tableView.dequeueReusableCellWithIdentifier(textCellIdentifier, forIndexPath: indexPath) as! InfoTableViewCell
let infoLabel = infoLabels[indexPath.row]
let infoDataItem = infoData[indexPath.row]
cell.infoLabel.text = infoLabel
cell.infoText.text = infoDataItem
cell.selectionStyle = .None
return cell
}
}
class InfoTableViewCell: UITableViewCell {
var infoLabel = UILabel()
var infoText = UILabel()
override init(style: UITableViewCellStyle, reuseIdentifier: String!) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
infoText.textAlignment = NSTextAlignment.Left
infoText.font = UIFont.systemFontOfSize(14)
infoText.baselineAdjustment = .AlignCenters
infoText.numberOfLines = 0
infoText.translatesAutoresizingMaskIntoConstraints = false
infoText.lineBreakMode = NSLineBreakMode.ByWordWrapping
self.contentView.addSubview(infoText)
let views = ["infoText" : infoText]
let hConstraint = NSLayoutConstraint.constraintsWithVisualFormat("H:|-[infoText]-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: views)
self.contentView.addConstraints(hConstraint)
let vConstraint = NSLayoutConstraint.constraintsWithVisualFormat("V:|-[infoText]-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: views)
self.contentView.addConstraints(vConstraint)
infoLabel.textAlignment = NSTextAlignment.Left
infoLabel.font = UIFont.boldSystemFontOfSize(14)
infoLabel.baselineAdjustment = .AlignCenters
infoLabel.numberOfLines = 0
self.contentView.addSubview(infoLabel)
}
required init(coder decoder: NSCoder) {
super.init(coder: decoder)!
}
override func awakeFromNib() {
super.awakeFromNib()
}
override func layoutSubviews() {
super.layoutSubviews()
let width = frame.width-120
let height = frame.size.height
infoLabel.frame = CGRectMake(10, 0, 100, height)
infoText.frame = CGRectMake(110, 0, width, height)
}
}