Create a warning based on UIPickerViewSelection - swift

Question

So here is what I am trying to do.
I am working on an app that allows the company I work for to see what account number they should use when making a purchase. There are certain locations where the costs should be split to different accounts based on location, but they are only for a certain few. I would like to issue a warning in the form of a popup, which I already have coded. My thought process is that I can use if/else statements to issue what I need, but I am unsure as to how to word it. It would supply a regular account number if the accounts need not be split, but then a warning statement if it did. The code is below. My problem is under the didSelectRow.
What's not actually shown is the PopUpVC I am using and the full list of array data because it's long.
Much thanks to this website as it has really helped me code my first project!
let account: [Account] = [Account(number: 0, description: "SELECT")]
//there is actually more data here but I am taking it out so it's shorter
let tasks: [Task] = [Task(number: 0, description: "SELECT")]
//there is actually more data here but I am taking it out so it's shorter
let locations: [Location] = [Location(number: 0, description: "SELECT")]
//there is actually more data here but I am taking it out so it's shorter
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 3
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if component == accountsComponent {
return account.count
} else if component == tasksComponent {
return tasks.count
} else if component == locationsComponent {
return locations.count
}
return 0
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if component == accountsComponent {
return account[row].description
} else if component == tasksComponent {
return tasks[row].description
} else if component == locationsComponent {
return locations[row].description
}
return nil
}
func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
if component == accountsComponent {
let label = (view as? UILabel) ?? UILabel()
label.font = label.font.withSize(12)
label.textAlignment = .center
label.text = account[row].description
return label
}
if component == tasksComponent {
let label = (view as? UILabel) ?? UILabel()
label.font = label.font.withSize(12)
label.textAlignment = .center
label.text = tasks[row].description
return label
}
if component == locationsComponent {
let label = (view as? UILabel) ?? UILabel()
label.font = label.font.withSize(12)
label.textAlignment = .center
label.text = locations[row].description
return label
} else {
let label = (view as? UILabel) ?? UILabel()
label.font = label.font.withSize(10)
label.textAlignment = .center
label.text = account[row].description
return label
}
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
pickerView.reloadAllComponents()
let selectedAccount = pickerView.selectedRow(inComponent: 0)
let selectedTask = pickerView.selectedRow(inComponent: 1)
let selectedLocation = pickerView.selectedRow(inComponent: 2)
let ACCOUNTS = account[selectedAccount].description
let TASKS = tasks[selectedTask].description
let LOCATION = locations[selectedLocation].description
let ACCOUNTSNUMBER = account[selectedAccount].number
let TASKSNUMBER = tasks[selectedTask].number
let LOCATIONNUMBER = locations[selectedLocation].number
if pickerView.selectedRow(inComponent: 2) = 10 //this is what I am unsure of how to do {
textViewInput = "WARNING - this should be split"
}
else {
textViewInput = "\(ACCOUNTSNUMBER) \(TASKSNUMBER) \(LOCATIONNUMBER)"
}

Answer 1

I prefer switch statements over a long series of if-else if-else statements. I would personally do something like this:
switch pickerView.selectedRow(inComponent: 2) {
case 10, 11, 12:
present(popUpVc, animated: true)
default:
textViewInput = "\(ACCOUNTSNUMBER) \(TASKSNUMBER) \(LOCATIONNUMBER)"
}
In this case, you would replace what I put as 10, 11, 12 as whatever rows you determine that need to have the accounts split. I'm also assuming here that PopUpVC is a UIAlertController that you are using to display the warning to the user.