how to delay for loop iterations in swift - ios

Question

i have write the follwing code for my function but i failed to execute iterations after delaying.
I want iterations with delay, for example when loop completed execution till i =2 after this when i == 3 this should execute after some delay.
Please guide me to solve this problem.
func allCellsAttempted() -> Bool {
var allCellsAttempted = true
var count = 0
if !oldVersionTriggered {
count = micSources.count
}
else {
count = olderVersionMicSources.count
}
print("Total Mics : \(count)")
for i in 0..<count {
if let cell = micTestFaliureTableView.cellForRow(at: IndexPath(row: i, section: 0)) as? MicFaliureTableViewCell {
if !cell.micFaliureTestview.attempted {
allCellsAttempted = false
break
}
}
}
return allCellsAttempted
}

Answer 1

You could use a timer. You will need to pass a completion handler closure to your function to access the result.
I would also suggest you access the information from the underlying data model rather than from the table view cells.
func allCellsAttempted(_ completion: #escaping(_ attempted: Bool)-> Void) -> Void {
var allCellsAttempted = true
var count = 0
var target: Int
if !oldVersionTriggered {
target = micSources.count
}
else {
target = olderVersionMicSources.count
}
print("Total Mics : \(target)")
let _ = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { [weak self] (timer) in
guard let strongSelf = self else {
timer.invalidate()
return
}
if let cell = strongSelf.micTestFaliureTableView.cellForRow(at: IndexPath(row: count, section: 0)) as? MicFaliureTableViewCell {
if !cell.micFaliureTestview.attempted {
allCellsAttempted = false
}
}
count += 1
if count == target || !allCellsAttempted {
timer.invalidate()
completion(allCellsAttempted)
}
}
}

Answer 2

Try to use
DispatchQueue.main.asyncAfter(deadline:.now() + 2.0, execute: { })