Writing a new app with swift5 requires some considerations

1. Expand left right top bottom

7.swift similar massory  masmake

4. How to rewrite   TextField（） Method   : Online   Namely init Method

6 get set 

   var clickEvent:clickViewEvent? {

        get {

  }        set {

}

8. similar pch Global access variables for

14 Single case

9.swift Interface , encapsulation

10 Class method

open class func

11 How to print

print Print any object

 debugPrint  

Swift.Result<Swift.Optional<Foundation.Data>, Alamofire.AFError>.success(Optional(129 bytes))

12.data turn json  Mutual rotation    

swift json analysis JSONSerialization_ Blog passing by the train -CSDN Blog _jsonserialization

                let data:Data = response.data!
                    do {
                        let ok =  try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as AnyObject

                        let stautd :NSNumber = ok["status"] as! NSNumber

                        if stautd.stringValue != "200000" {
                            print(ok)
                        }
                        success(ok as AnyObject)
                    } catch {
                    }

13 bounced

15 string Sentenced to empty   string It's empty How to judge

17 NSDictionary How to write empty  

        var paramters: [String: Any]? = nil

16 how present A page

stay viewDidAppear    instead of viewWillAppear

18  label

        // Open now ,
        let label = UILabel()
        let attrString = NSMutableAttributedString(string: " Open now ,")
        label.text = " Open now ,"
        label.frame = CGRect(x: 14 * 2, y: 110 * 2, width: 159.5 * 2 , height: 23 * 2)
        label.numberOfLines = 0
        let attr: [NSAttributedString.Key : Any] = [.font: UIFont.systemFont(ofSize: 17 * 2),.foregroundColor: UIColor(red: 1, green: 1, blue: 1,alpha:1), ]
        attrString.addAttributes(attr, range: NSRange(location: 0, length: attrString.length))
        label.attributedText = attrString
        contentScrollow.addSubview(label)
        label.alpha = 1;
        

19 imageview 

        let backgimageView :UIImageView = UIImageView.init(image: UIImage.init(named: "bg_pic"))
        backgimageView.frame = self.view.frame
        backgimageView.isUserInteractionEnabled = true
        backgimageView.masmakeS { (make) in
//            make.left = 200
        }
        self.view.addSubview(backgimageView)
        

20 Shuffling figure   jxBanner

21 Load network image   Kingfisher

22 Receive network array

    var imageSource:Array<Any> = []

    self.imageSource = json["banners"] as! Array

Take the value of the array

    var imageSource:Array< [String:String] > = []

     let dict  =   self.imageSource[index]

        let ss:String = dict["url"] ?? ""