let urlString = "itms-apps://itunes.apple.com/app/id1250290965"
if let url = URL(string: urlString) {
 //根據(jù)iOS系統(tǒng)版本，分別處理
 if #available(iOS 10, *) {
 UIApplication.shared.open(url, options: [:],
     completionHandler: {
     (success) in
 })
 } else {
 UIApplication.shared.openURL(url)
 }
}

//郵件發(fā)送函數(shù)
func configuredMailComposeViewController() -> MFMailComposeViewController {

 let mailComposeVC = MFMailComposeViewController()
 mailComposeVC.mailComposeDelegate = self

 //獲取設備信息
 let deviceName = UIDevice.current.name
 // let deviceModel = UIDevice.current.model
 let systemVersion = UIDevice.current.systemVersion
 let deviceUUID = UIDevice.current.identifierForVendor?.uuidString

 //獲取APP信息
 let infoDic = Bundle.main.infoDictionary
 // 獲取App的版本號
 let appVersion = infoDic?["CFBundleShortVersionString"] ?? "appVersion"
 // 獲取App的build版本
 let appBuildVersion = infoDic?["CFBundleVersion"] ?? "appBuildVersion"
 // 獲取App的名稱
 let appName = infoDic?["CFBundleDisplayName"] ?? "OneClock"

 //設置郵件地址、主題及正文
 mailComposeVC.setToRecipients(["<xdehang@gmail.com>"])
 mailComposeVC.setSubject("OneScreen "+String(describing: appVersion)+" - "+NSLocalizedString("FeedBack Mail From", comment: "FeedBack Mail From")+" "+deviceName)

 let content:String = "\n \n \n \n Device：\(deviceName)\n System：\(systemVersion)\n App Version：\(String(describing: appVersion))"

 mailComposeVC.setMessageBody(NSLocalizedString("<Start To Write Mail>", comment: "<Start To Write Mail>")+content, isHTML: false)
 return mailComposeVC
}

//郵件系統(tǒng)提示
func showSendMailErrorAlert() {
 let sendMailErrorAlert = UIAlertController(title: NSLocalizedString("Unable To Send", comment: "Unable To Send"), message: NSLocalizedString("Your device has not been set up, please set in the mail application and then try to send.", comment: "Your device has not been set up, please set in the mail application and then try to send."), preferredStyle: .alert)
 sendMailErrorAlert.addAction(UIAlertAction(title: NSLocalizedString("Confirm", comment: "Confirm action title"), style: .default) { _ in })
 self.present(sendMailErrorAlert, animated: true){}

}
//郵件發(fā)送檢測
func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {

 switch result.rawValue {
 case MFMailComposeResult.cancelled.rawValue:
 print("取消發(fā)送")
 case MFMailComposeResult.sent.rawValue:
 print("發(fā)送成功")
 default:
 break
 }
 self.dismiss(animated: true, completion: nil)
}

if MFMailComposeViewController.canSendMail() {
 //注意這個實例要寫在if block里，否則無法發(fā)送郵件時會出現(xiàn)兩次提示彈窗（一次是系統(tǒng)的）
 let mailComposeViewController = configuredMailComposeViewController()
 self.present(mailComposeViewController, animated: true, completion: nil)

} else {
 self.showSendMailErrorAlert()
}

var webUrl:String = "https://itunes.apple.com/cn/app/id1355476695"
var urlTitle:String = "OneScreen"
var urlImage:UIImage = #imageLiteral(resourceName: "onescreen_icon")

let shareVC:UIActivityViewController = UIActivityViewController(activityItems: [self.urlTitle,self.urlImage,self.webUrl], applicationActivities: nil)

self.present(shareVC, animated: true, completion: {
 print("shareVC success")
})

override func viewDidLoad() {
 super.viewDidLoad()

 // Do any additional setup after loading the view.
 switch webIndex {
 case 0:
  self.urlString = "https://weibo.com/bujidehang"
 case 1:
  self.urlString = "http://www.ohweonline.com/oneday"
 case 2:
  self.urlString = "http://www.ohweonline.com/oneday/updateCN.html"
 case 3:
  self.urlString = "http://www.ohweonline.com/oneday/updateEN.html"
 default:
  self.urlString = "http://www.ohweonline.com/oneday"
 }

 let urlobj = URL(string:self.urlString)
 let request = URLRequest(url:urlobj!)
 webView.loadRequest(request)
 print(webView.isLoading)
}

print("to webview")
self.webIndex = 1
self.performSegue(withIdentifier: "viewWebView", sender: self)

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
 if segue.identifier == "viewWebView"{
  let dest = segue.destination as! WebViewController
  dest.webIndex = self.webIndex
 }
}