let activityItem = URL.init(fileURLWithPath: Bundle.main.path(forResource: “Audio1”, ofType: “mp3")!)
let activityVC = UIActivityViewController(activityItems: [activityItem],applicationActivities: nil)
activityVC.popoverPresentationController?.sourceView = self.view
self.present(activityVC, animated: true, completion: nil)

let urlString = "Visit this website: http://www.google.com"
let urlStringEncoded = urlString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)!
let url  = NSURL(string: "whatsapp://send?text=(urlStringEncoded)")

if UIApplication.shared.canOpenURL(url! as URL) {
UIApplication.shared.openURL(url! as URL)
}