table cell is not called - swift

Question

I created a UIViewController containing a UITableView.
I want it to display files I created at another position.
The corresponding class looks like this:
import UIKit
class BackupViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var rows:[String] = []
override func viewDidLoad() {
super.viewDidLoad()
self.table.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
self.table.dataSource = self
self.table.delegate = self
getFiles()
// Do any additional setup after loading the view.
}
func getFiles() {
let filemgr = FileManager.default
let path = filemgr.urls(for: FileManager.SearchPathDirectory.documentDirectory, in: FileManager.SearchPathDomainMask.userDomainMask).last
do {
rows = try filemgr.contentsOfDirectory(atPath: (path?.path)!)
// process files
} catch {
print("Error while enumerating files")
}
table.reloadData()
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return rows.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:UITableViewCell = self.table.dequeueReusableCell(withIdentifier: "cell") as! UITableViewCell
cell.textLabel?.text = rows[indexPath.row]
return cell
}
#IBOutlet weak var table: UITableView!
}
It reads the files correctly and when
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int)
is called (which happens 3 times for some reason), the array has (at the moment) 2 elements. However, the function
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath)
is never called and of course I get an empty table.

Answer 1

You need to reload your tableView after fetching files in getFile() function.
func getFiles() {
let filemgr = FileManager.default
let path = filemgr.urls(for: FileManager.SearchPathDirectory.documentDirectory, in: FileManager.SearchPathDomainMask.userDomainMask).last
do {
rows = try filemgr.contentsOfDirectory(atPath: (path?.path)!)
self.table.reloadData()
// process files
} catch {
print("Error while enumerating files")
}
/*for file in files {
rows.append(file.absoluteString)
}*/
showFiles = true
}
You need to call reloadData() once row will have some value in it.