ios save image with name

Ref : http://stackoverflow.com/questions/35796218/ios-save-image-with-name

let newImage = UIImage.init(named: "myimage")


        let date :NSDate = NSDate()

        let dateFormatter = NSDateFormatter()
        //dateFormatter.dateFormat = "yyyy-MM-dd'_'HH:mm:ss"
        dateFormatter.dateFormat = "yyyy-MM-dd'_'HH_mm_ss"

        dateFormatter.timeZone = NSTimeZone(name: "GMT")

        let imageName = "/\(dateFormatter.stringFromDate(date)).jpg"
        print(imageName)
        //var paths: [AnyObject] = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true)
        //var documentsDirectoryPath = getDocumentsURL().relativePath
        var documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] 
        documentsDirectoryPath += imageName
        print(documentsDirectoryPath)

        let settingsData: NSData = UIImageJPEGRepresentation(newImage!, 1.0)!
        settingsData.writeToFile(documentsDirectoryPath, atomically: true)