Label.text is not updated, I don’t understand - what’s the matter?

Question

Swift

I can't understand what's the matter - if indicatorUnitPressed = 0, then when the button is pressed, the text changes without problems, but if indicatorUnitPressed is equal to a number from 1 to 7, then the first time the button is pressed, the text does not change, and the second time it changes.

var indicatorUnitPressed = 0 // Меняется от 0 до 7 в зависимости от того какую кнопку нажали
var switchPressed = 0 // по умолчанию


@IBAction func switchButtonPressed(_ sender: UIButton)
{
if switchPressed != 1
{
switch indicatorUnitPressed
{
case 0:
infoLabel.text = “Fº to Cº”
print("(indicatorUnitPressed)")
case 1:
infoLabel.text = “Km to Ml”
print("(indicatorUnitPressed)")
case 2:
infoLabel.text = “cm to in”
print("(indicatorUnitPressed)")
case 3:
infoLabel.text = “cm to ft”
case 4:
infoLabel.text = “m2 to sq.ft”
case 5:
infoLabel.text = “Litr to Gal”
case 6:
infoLabel.text = “Litr to Oz”
case 7:
infoLabel.text = “Kg to Pound”
default:
break
}
switchPressed = 1
}
else
{
print("(switchPressed)")
switch indicatorUnitPressed
{
case 0:
infoLabel.text = “Cº to Fº”
print("(indicatorUnitPressed)")
case 1:
infoLabel.text = “Ml to Km”
print("(indicatorUnitPressed)")
case 2:
infoLabel.text = “in to cm”
case 3:
infoLabel.text = “ft to cm”
case 4:
infoLabel.text = “sq.ft to m2”
case 5:
infoLabel.text = “Gal to Litr”
case 6:
infoLabel.text = “Oz to Litr”
case 7:
infoLabel.text = “Pound to Kg”
default:
break
}
switchPressed = 0
}
}

Full file here https://www.dropbox.com/s/fxa8ly6j5lxvpuq/MilesVie...

Answer 1

Try calling infoLabel.setNeedsDisplay()after the text has been assigned.
Any errors and warnings in the console?
It is possible that the execution is not on the main thread, then wrap it in

DispatchQueue.main.async { [unowned self] in
    infoLabel.text = text
}

Answer 2

Did you look in the debug that switch enters the right branch?
Unfortunately, it's impossible to understand anything from your code.