fileManager

func saveImageInWaypoint(){
        if let image = imageView.image {
            if let imageData=UIImageJPEGRepresentation(image, 1.0){
                let fileManager=NSFileManager()
                if let docsDir=fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first as? NSURL{
                    let unique=NSDate.timeIntervalSinceReferenceDate()//create unique id
                    let url=docsDir.URLByAppendingPathComponent("\(unique).jpg")
                    if let path=url.absoluteString {
                        if imageData.writeToURL(url, atomically: true){
                            waypointToEdit?.links=[GPX.Link(href: path)]
                        }
                    }
                }
            }
        }
    }