How to select only tapped cells with button? - swift

Question

Good time of day, in my app i have a tableview and custom cell, in cell there are labels, button and progressBar, so that when i tap button download proceeds and progressBar shows progress, but when i scroll down i realise that there are other cells are selected and shows progress and when i scroll up again progress of my selected cell stops. Could you help, any feedbacks appreciated )
That's my TableViewController :
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return titles.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ViewControllerTableViewCell
cell.pesnya.text = titles[indexPath.row]
cell.pevets.text = artists[indexPath.row]
cell.url = urls[indexPath.row]
return (cell)
}
#IBAction func buttonPressed(_ sender: AnyObject) {
(sender as! UIButton).isSelected = !(sender as! UIButton).isSelected
if (sender as! UIButton).isSelected {
if let indexPath = tableView.indexPath(for: sender.superview!?.superview as! UITableViewCell) {
DownloadManager.shared.download(url: urls[indexPath.row], title: titles[indexPath.row])
}
} else {
// (sender as! UIButton).setTitle("Удалить", for: UIControlState.normal)
if let indexPath = tableView.indexPath(for: sender.superview!?.superview as! UITableViewCell) {
let name = "\(titles[indexPath.row]).mp3"
let name2 = name.replacingOccurrences(of: " ", with: "")
let filePathURL = URL(string:"string")
do {
try FileManager.default.removeItem(at: filePathURL!)
} catch {
print("Could not delete file: \(error)")
}
}
}
}

Answer 1

This is because table view cell will be reused when you scroll. Set views to initial status in cell's prepareForReuse. Like this:
class ACell: UITableViewCell {
override func prepareForReuse() {
view.hidden = true
}
}

Answer 2

try this :-
override func tableView(_ tableView: UITableView, numberOfRowsInSection
section: Int) -> Int
{
return titles.count
}
override func tableView(_ tableView: UITableView, cellForRowAt
indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for:
indexPath) as! ViewControllerTableViewCell
cell.pesnya.text = titles[indexPath.row]
cell.pevets.text = artists[indexPath.row]
cell.url = urls[indexPath.row]
// Create IBOutlet for button
cell.btnPressed.tag = indexPath.row
cell.btnPressed.addTarget(self, action: #selector(self.buttonPressed(sender:)), for: .touchUpInside)
if cell.btnPressed.isSelected {
DownloadManager.shared.download(url: urls[indexPath.row], title: titles[indexPath.row])
}else {
let name = "\(titles[indexPath.row]).mp3"
let name2 = name.replacingOccurrences(of: " ", with: "")
let filePathURL = URL(string:"string")
do {
try FileManager.default.removeItem(at: filePathURL!)
} catch {
print("Could not delete file: \(error)")
}
}
return (cell)
}
#IBAction func buttonPressed(_ sender: UIButton) {
let indexPath = IndexPath(row: sender.tag, section: 0)
if let cell = tableView.cellForRow(at: indexPath) as?
ViewControllerTableViewCell {
cell.btnPressed.isSelected = !cell.btnPressed.isSelected
tableview.reloadData()
}
}