xcode swift 3.0 适配

附上以往xcode版本下载地址
https://developer.apple.com/download/more/

Alamofire

encoding,编码方式,Alamofire提供一个枚举来表示请求所用编码
如.URL,.JSON
那么GET方式请求数据一般使用.URL编码方式
POST方式用.JSON编码方式

'setStatusBarHidden(_:with:)' was deprecated in iOS 9.0: Use -[UIViewController prefersStatusBarHidden]
隐藏状态栏 
        self.setNeedsStatusBarAppearanceUpdate()
           
    override var prefersStatusBarHidden: Bool {
        return false
    }
    
    override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
        return UIStatusBarAnimation.fade
    }


'setStatusBarOrientation(_:animated:)' was deprecated in iOS 9.0: Explicit setting of the status bar orientation is more limited in iOS 6.0 and later
 旋转屏幕
        UIApplication.shared.statusBarOrientation = .portrait


 'UIAlertView' was deprecated in iOS 9.0: UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead

  //Create the AlertController
  let actionSheetController: UIAlertController = UIAlertController(title: "Alert", message: "Swiftly Now! Choose an option!", preferredStyle: .Alert)

  //Create and add the Cancel action
  let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .Cancel) { action -> Void in
    //Do some stuff
    }
  actionSheetController.addAction(cancelAction)
    //Create and an option action
  let nextAction: UIAlertAction = UIAlertAction(title: "Next", style: .Default) { action -> Void in
    //Do some other stuff
    }
  actionSheetController.addAction(nextAction)
  //Add a text field
  actionSheetController.addTextFieldWithConfigurationHandler { textField -> Void in
       //TextField configuration
     textField.textColor = UIColor.blueColor()
   }

   //Present the AlertController
   self.presentViewController(actionSheetController, animated: true, completion: nil)