Check if exists phone number in String

Question

Hey I would like to check if UITextView (maybe this could be relevant or not) contains phone number in text. I am using Swift 2.3, but if you got it in Swift 3 I will try to translate it.

Should work for these inputs for exemple:

• "Good morning, 627137152"
• "Good morning, +34627217154"
• "Good morning, 627 11 71 54"

The last case it's easy if other works, just replace " " occurences to "" and check the previous function containsPhone.

I have tried this solution but doesn't works with the first case: (Find phone number in string - regular)

Thank you.

Answer 1

NSDataDetector provides a convenient way to do that:

let string = "Good morning, 627137152 \n Good morning, +34627217154 \n Good morning, 627 11 71 54"

do {
   let detector = try NSDataDetector(types: NSTextCheckingResult.CheckingType.phoneNumber.rawValue)
   let numberOfMatches = detector.numberOfMatches(in: string, range: NSRange(string.startIndex..., in: string))
   print(numberOfMatches) // 3
} catch {
   print(error)
}

or if you want to extract the numbers

let matches = detector.matches(in: string, range: NSRange(string.startIndex..., in: string))

for match in matches{
    if match.resultType == .phoneNumber, let number = match.phoneNumber {
        print(number)
    }
}

Answer 2

This func takes your string and returns array of detected phones. It's using NSDataDetector, if this mechanism won't fit your needs in the end, you'll be probably need to build your own algorithm:

func getPhoneNumber(from str: String) -> [String] {
    let detector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.phoneNumber.rawValue)
    let matches = detector.matches(in: str, options: [], range: NSRange(location: 0, length: str.characters.count))

    var resultsArray = [String]()

    for match in matches {
        if match.resultType == .phoneNumber,
            let component = match.phoneNumber {
            resultsArray.append(component)
        }
    }
    return resultsArray
}