Swift- How to dynamically create labels - arrays

Question

I have created some code which reads through an array and saves data for each index into variables which I then pass onto to a created label.
Below is the code:
example of data arr content :
["2,5","5,1"] two indexes inside array
for i in 0..<dataArr.count {
let element = dataArr[i]
let labelNum = UILabel()
label split = element.components(separatedBy: ",")
let num1 = split[0]
let num2 = split[1]
let num1Nnum2 = "number 1 :" + num1 + " number 2:" + num2
labelnum.text = num1Nnum2
labelnum.textAlignment = .center
labelnum.frame = CGRect( x:10, y:90, width:250, height: 80)
self.view.addSubview(labelnum)
}
how can I create it so that when the label is created the second time when it reads index[1] it creates a new label with same code but drop the label under the first label. I have tried to do :
labelnum[i] to attempt to create a new label using the value of index for example labelnum1 when i is = 1.
Any help will be Appreciated.

Answer 1

There is UIStackView in iOS which lets you add elements dynamically at the bottom or top of the existing views. You can always add a new label which automatically appears at the bottom of the view. You can also accomplish this with UITableView or UIScrollView.
Here is an example of UIStackView, dynamically appending new label below previous one. I hope you can infer this for your use case,
class ViewController: UIViewController {
var lastLabelCount = 0
var stackView: UIStackView!
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.white
let tap = UITapGestureRecognizer(target: self,
action: #selector(tapped))
view.addGestureRecognizer(tap)
createViews()
}
func createViews() {
stackView = UIStackView(frame: .zero)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.alignment = .top
view.addSubview(stackView)
NSLayoutConstraint.activate([
stackView.leftAnchor.constraint(equalTo: view.leftAnchor),
stackView.rightAnchor.constraint(equalTo: view.rightAnchor),
stackView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
])
}
#objc func tapped() {
let label = UILabel(frame: .zero)
label.translatesAutoresizingMaskIntoConstraints = false
label.textColor = UIColor.black
label.text = "Hi I am label \(lastLabelCount)"
stackView.addArrangedSubview(label)
lastLabelCount += 1
}
}

Answer 2

Create a variable to hold Y Position of The Label. and in each iteration add the height of previous label in Y Position variable to drop new label to below previous one.
class ViewController: UIViewController {
let dataArr = ["2,5","5,1"]
override func viewDidLoad() {
super.viewDidLoad()
var yPos = 90
for i in 0..<dataArr.count {
let element = dataArr[i]
let labelNum = UILabel()
let split = element.components(separatedBy: ",")
let num1 = split[0]
let num2 = split[1]
let num1Nnum2 = "number 1 :" + num1 + " number 2:" + num2
labelNum.text = num1Nnum2
labelNum.textAlignment = .center
labelNum.frame = CGRect( x:10, y:yPos, width:250, height: 80)
yPos += 80
self.view.addSubview(labelNum)
}
}