UITableView Showing last value of a loop - ios

Question

I would like to show all the values of this loop in the tableview. The code is to calculate an Amortization Table for loans. I tried saving the data of the loop in the array, but it always gives me the last values. I really got stuck on this. So how can I do that, please? This is my code:
import UIKit
class tableViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
#IBOutlet var tableView: UITableView!
var arr = [Int]()
var cell:tableCell!
var TPayment: float_t! // calls value of 59600 from main controller
var years1: float_t! // number of months = 180 ( 15 years)
var monthlyPayment: float_t! // 471
var interest: float_t! // 5%
var principil: float_t! //222
var interestrate: float_t! // 249
var initil: float_t!
var data = Array<float_t>()
var data2: NSMutableArray = []
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
let c = Int(years1)
arr += 0...c
tableCalculation()
// Register custom cell
let nib = UINib(nibName: "table", bundle: nil)
tableView.registerNib(nib, forCellReuseIdentifier: "cell")
}
func tableCalculation() {
let years = Int(years1)
initil = TPayment - 0
for i in 0..<years {
initil = initil - principil
interest = initil * interestrate
principil = monthlyPayment - interest
print("Month : \(monthlyPayment), principil: \(principil),interest: \(interest), initi: \(initil)")
data = [interest]
self.data2 = [initil]
}
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return arr.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! tableCell
cell.lbl1.text = "\(arr[indexPath.row])"
cell.lbl2.text = "\(monthlyPayment)"
cell.lbl3.text = "\(data[indexPath.row % data.count])"
cell.lbl4.text = "\(principal)"
cell.lbl5.text = "\(self.data2[indexPath.section])"
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
print("Row \(indexPath.row) selected")
}
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 40
}
}
Table View with UITableView
Table view with print()

Answer 1

The main issue is with your data array.
In your loop where you populate your data array, in tableCalculation, there's this:
data = [interest]
It means that for each iteration you set the data array to [interest] instead of appending the new item to the array.
What you should do instead:
data.append(interest)
Note that you make the same mistake with self.data2. But now you know how to fix this kind of error.

Answer 2

In the cellForRowAtIndexPath method you are giving the same data to print that looks like the issue
I don't get much for all the labels but you can change it based on the requirement
for lbl2 and lbl4 you are passing a same single float variable for all the rows that's why it show the same value, if you want to show the different value for each row you should store it in array and at cellForRowAtIndexPath get it like you are doing for lbl1
cell.lbl2.text = currencyFormatter(monthlyPayment)
cell.lbl4.text = currencyFormatter(principil)
for lbl5 Your code cell code should be like this
cell.lbl5.text = "\(self.data2[indexPath.row])"
For the lbl 3 & lbl 5 when i execute this code with static value to get interest it only stores one value in the array
for i in 0..<years {
let interest = 5.0 * 4.0
data = [interest]
}
to store every value you calculated in array you should use append
data.append(interest)
self.data2.append(initil)
as there is only 1 value in the array for every index path it gives 0th value in the array as per your modulo operation so it shows same value in each row