Swift JSON strings and dictionaries and arrays of reciprocal

1. convert jsonstring to dictionary

    jsonstring conversion to Dictionary     func getdictionaryfromjsonstring (jsonstring:string)->nsdictionary{let        jsondata:d ATA = Jsonstring.data (using:. UTF8)!        Let dict = try? Jsonserialization.jsonobject (With:jsondata, Options:. mutablecontainers)        if dict! = nil {            return dict as! Nsdictionary        }        return Nsdictionary ()            }

2.jsonstring convert to an array

Func getarrayfromjsonstring (jsonstring:string)->nsarray{let                jsondata:data = Jsonstring.data (using:. UTF8)!                Let array = try? Jsonserialization.jsonobject (With:jsondata, Options:. mutablecontainers)        if array! = Nil {            return array as! Nsarray        }        return array as! Nsarray            }

　　

3. Convert Dictionary to Jsonstring

/**     Dictionary converted to jsonstring          -parameter dictionary: Dictionary parameter          -returns:jsonstring     */    func Getjsonstringfromdictionary (dictionary:nsdictionary), String {        if (! Jsonserialization.isvalidjsonobject (dictionary) {            print ("Cannot resolve jsonstring")            return ""} Let        data: nsdata! = try? Jsonserialization.data (Withjsonobject:dictionary, Options: []) as nsdata!        Let jsonstring = NSString (data:data as Data,encoding:string.encoding.utf8.rawvalue)        return jsonstring! as String< c12/>}

　　

Swift JSON strings and dictionaries and arrays of reciprocal