Calling converted string from UIDataPicker date - ios

Question

Now I am learning Swift and making a typical ToDo app.
I found a function to convert date data from UIDatePicker to String, here is my ViewController chunk of code:
#IBAction func dateToString(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm"
var strDate = dateFormatter.stringFromDate(myDatePicker.date)
return ()
}
But the problem is that I can not access the string results from this function, in my app
i have 2 labels in every tableViewCell, one simple label text data, and another is date data from date picker (also should be a string):
#IBOutlet weak var saveButton: UIBarButtonItem!
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if saveButton === sender {
let name = nameTextField.text ?? ""
let date =
item = Item (name: name, date: date)
}
}
override func viewDidLoad() {
super.viewDidLoad()
if let item = item {
nameTextField.text = item.name
= item.date
}
}
please help, what should I write in
let date =
and
= item.date
to define a date?
I've tried to call a function let date = dateToString; but it doesn't work for me.
Greatly appreciate any help here!

Answer 1

You could change your function like
var strDate:String = String()
#IBAction func dateToString(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm"
strDate = dateFormatter.stringFromDate(myDatePicker.date)
}
Then you can use
let date = strDate

Answer 2

First, your dateToString function shouldn't be an IBAction. Those are used for methods called directly by interface items and hooked up in Interface Builder. What you want here is a regular function that takes a date and returns a formatted string, like this:
func dateToString(date: NSDate) -> String {
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm"
return dateFormatter.string(from: date)
}
Now when you want a formatted date string, you call it and pass it the Date you want it to format. It looks like you're using a UIDatePicker to specify the date, so you need to set up an #IBOutlet in your view controller (if you haven't already done so) to give you access to that object. To do that, control-drag from the date picker to your view controller source, then name the outlet. It will generate code in your source like:
#IBOutlet weak var myDatePicker: UIDatePicker!
Now you can refer to the datePicker elsewhere in your class. So you can get the date as a formatted string like this:
let dateString = dateToString(date: myDatePicker.date)
You can then pass this string to an Item, or set it as the text of a field or label.

Answer 3

This is how I figured it out:
func dateToString (date: NSDate) -> String {
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy HH:mm"
return dateFormatter.stringFromDate(date)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if saveButton === sender {
let name = nameTextField.text ?? ""
let date = dateToString (myDatePicker.date) ?? ""
item = Item (name: name, date: date)
}