This Swift code example will demonstrate how to convert JSON String to NSDictionary in Swift 2 and Swift 3.

Convert JSON String to NSDictionary – Example in Swift 2

 let jsonText = "{\"first_name\":\"Sergey\"}"
        var dictonary:NSDictionary?
        
        if let data = jsonText.dataUsingEncoding(NSUTF8StringEncoding) {
            
            do {
                dictonary =  try NSJSONSerialization.JSONObjectWithData(data, options: []) as? [String:AnyObject]
            
                if let myDictionary = dictonary
                {
                     print(" First name is: \(myDictionary["first_name"]!)")
                }
            } catch let error as NSError {
                print(error)
            }
        }

Convert JSON String to NSDictionary – Example in Swift 3

  let jsonText = "{\"first_name\":\"Sergey\"}"
        var dictonary:NSDictionary?
        
        if let data = jsonText.data(using: String.Encoding.utf8) {
            
            do {
                dictonary = try JSONSerialization.jsonObject(with: data, options: []) as? [String:AnyObject]
            
                if let myDictionary = dictonary
                {
                     print(" First name is: \(myDictionary["first_name"]!)")
                }
            } catch let error as NSError {
                print(error)
            }
        }

Check out these Swift code examples to learn how to send HTTP GET and HTTP POST requests and how to convert JSON response into NSDictionary to NSArray in Swift:

Send HTTP Request and Covert JSON Response into a Swift Object

• Display Large Collection of Images in UITableView with SDWebImage
• Send HTTP POST Request. Example in Swift and PHP

[raw_html_snippet id=”cookbookpagecoursesheader”]

Unit Testing Swift Mobile App

Apply Test-Driven Development(TDD) process to iOS mobile app development in Swift Preview this video course.