Add section after 7 cell created in TableView - Swift - swift

Question

I have 2 arrays, one that is containing the sections and another one that is containing the elements for populate the cells of my TableView.
The question is: is it possible to create multiple sections with title after 7 cells?
For example, the array contains 14 elements and sections array 2 elements. I wish that at the beginning will appear "Section 1" then first 7 elements, then "Section 2" then the rest of the elements.
Thank you!
import UIKit
class ChallengesViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var titleArray = [""]
var weekSection = ["1","2"]
override func viewDidLoad() {
super.viewDidLoad()
> let url = URL(string:"https://website.com/file.txt")!
> URLCache.shared.removeAllCachedResponses()
> let task = URLSession.shared.dataTask(with:url) { (data, response, error) in
> if error != nil {
> print(error!)
> }
> else {
> if let textFile = String(data: data!, encoding: .utf8) {
> DispatchQueue.main.async {
> self.titleArray = textFile.components(separatedBy: "\n")
> self.tableView.reloadData()
> print(self.titleArray)
> }
> }
> }
> }
> task.resume()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return titleArray.count
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return weekSection.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "challengeCell", for: indexPath) as! ChallengeTableViewCell
cell.labelTitle.text = titleArray[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
switch (section) {
case 0:
return "Case 0"
case 1:
return "Case 1"
default:
return "Default"
}
}

Answer 1

Update numberOfRowsInSection and cellForRowAt methods like this
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return "Case \(section)"
}
func numberOfSections(in tableView: UITableView) -> Int {
let lastSection = titleArray.count % 7 == 0 ? 0 : 1
return (titleArray.count/7) + lastSection
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let count = titleArray.count - (7*section)
return min(7,count)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "challengeCell", for: indexPath) as! ChallengeTableViewCell
let rowIndex = (indexPath.section*7)+indexPath.row
cell.labelTitle.text = titleArray[rowIndex]
return cell
}

Answer 2

after the edit of the question, this is one of the best answers I think
extension Array {
func chunked(into size: Int) -> [[Element]] {
return stride(from: 0, to: count, by: size).map {
Array(self[$0 ..< Swift.min($0 + size, count)])
}
}
}
usage:
#IBOutlet weak var tableView: UITableView!
var titleArray: [[String]] = [[]]
var sectionsCount: Int = 0
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string:"https://website.com/file.txt")!
URLCache.shared.removeAllCachedResponses()
let task = URLSession.shared.dataTask(with:url) { (data, response, error) in
if error != nil {
print(error!)
}
else {
if let textFile = String(data: data!, encoding: .utf8) {
DispatchQueue.main.async {
let myArray = textFile.components(separatedBy: "\n")
self.sectionsCount = myArray.chunked(into: 7).count
self.tableView.reloadData()
print(self.titleArray)
}
}
}
}
task.resume()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return sectionsCount
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return titleArray[section].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "challengeCell", for: indexPath) as! ChallengeTableViewCell
let sectionArray = titleArray[indexPath.section]
cell.labelTitle.text = sectionArray[indexPath.row]
return cell
}