Youtube Video ID From URL - Objective C

Question

I basically have a Youtube url as an NSString, but I need to extract the video id that is displayed in the url. I found many tutorials on how to do this in php or and other

Answer 1

Here is the swift version using @jt_ik's regex:

func extractYoutubeID(youtubeURL: String) -> String {
    var error: NSError?
    let pattern: String = "(?<=v(=|/))([-a-zA-Z0-9_]+)|(?<=youtu.be/)([-a-zA-Z0-9_]+)"
    let regex = NSRegularExpression(pattern: pattern, options: .CaseInsensitive, error: &error)!

    if error == nil {
        if let regexMatch = regex.firstMatchInString(youtubeURL, options: nil, range: NSRange(location: 0, length: youtubeURL.utf16Count)) {
            return (youtubeURL as NSString).substringWithRange(regexMatch.range)
        }
        // Handle no match here
        return ""
    } else {
        // Handle error here
        println(error?.userInfo)
        return ""
    }
}