Cannot find the right logic to translate the NSDate to string-CodePudding

I am very new to swift and found this one difficult, so its saying that it cannot be parsed to a variable because its not a string.

I searched and found something but it was not related near to my type of code so I am kindly asking for it :)

    let dateFormatterGet = DateFormatter()
    dateFormatterGet.dateFormat = "yyyy-MM-dd HH:mm:ss"

    let dateFormatterPrint = DateFormatter()
    dateFormatterPrint.dateFormat = "MMM dd,yyyy"

    let date: NSDate? = dateFormatterGet.date(from: currentVechicle.LastCommunicationDate!) as NSDate?
    print(dateFormatterPrint.string(from: date! as Date))



    cell.perditsuarOutlet.text = date    // Error: Cannot assign value of type 'NSDate?' to type 'String?'

CodePudding user response：

You are printing the correct String value, but assigning the variable date which typed as NSDate? to the text property, which should be a String.

Try doing this:

let dateString = dateFormatterPrint.string(from: date! as Date)
cell.perditsuarOutlet.text = dateString

One piece of advice: don't force unwrap here (date! as Date). Instead, include a way to handle nil values for your "optional" NSDate? variable. One way to do this would look like this:

if let date = dateFormatterGet.date(from: currentVechicle.LastCommunicationDate!) as NSDate? {
  cell.perditsuarOutlet.text = dateFormatterPrint.string(from: date as Date)
} else {
  cell.perditsuarOutlet.text = "Empty or invalid date"
}

I know this looks like a lot of overhead, but it is worth it to avoid crashes down the line...

CodePudding user response：

your date constant is an NSDate.
and the cells text property is a String.

You can't pair the two together since they aren't the same type.

Since you can't change the cells text type, that only leaves you with 1 option. You'll have to turn the NSDate into a String.

I recommend taking a look at Paul Hudsons 100 Days of Swift. It was a fantastic resource when I first started. The link I've provided points to his lessons from Day 1 about Strings

Keep up the good work. I promise it gets better :)