Swift: check if UISearchBar.text contains a url

Question

How can I check if UISearchBar.text contains a URL? I thought of doing something like this:

if (searchBar.text == NSTextCheckingType.Link) {

}

Answer 1

I enhanced Imanou PETIT's anwser.

This allows you to extract multiple URL's from a string.

extension String {
    var extractURLs: [NSURL] {
        var urls : [NSURL] = []
        var error: NSError?
        let detector = NSDataDetector(types: NSTextCheckingType.Link.rawValue, error: &error)

        var text = self

        detector!.enumerateMatchesInString(text, options: nil, range: NSMakeRange(0, count(text)), usingBlock: { (result: NSTextCheckingResult!, flags: NSMatchingFlags, stop: UnsafeMutablePointer) -> Void in
            //            println("\(result)")
            //            println("\(result.URL)")
            urls.append(result.URL!)
        })

        return urls
    }
}

An example usage:

var urls = text.extractURLs
for url in urls {  
     // do stuff with your URL        
     if UIApplication.sharedApplication().canOpenURL(url) {
         UIApplication.sharedApplication().openURL(url)
         break
     }
}