How to parse Json response in Swift - ios

Question

I need to parse out "choices" and save 123347 and save "option" to a string from the following String:
{
"type" : "radiobuttons",
"patient" : false,
"text" : "How are you today",
"id" : 63339,
"position" : 2,
"options" : "123344:ok today;123345:see you tomorrow;123346:call friend;123347:call lisa;",
"required" : true,
"choices" : {
"123347" : {
"value" : 3,
"option" : "iOS"
},
"123345" : {
"option" : "Android",
"value" : 1
},
"123346" : {
"option" : "Windows",
"value" : 2
},
"123344" : {
"option" : "MAC",
"value" : 0
}
}
}
let json = try? JSONSerialization.jsonObject(with: str, options: [])

Answer 1

Swift 5
Try to serialize and decode it
let jsonResponse = try JSONSerialization.data(withJSONObject: responseObject as Any, options: JSONSerialization.WritingOptions.sortedKeys)
let customObject = try JSONDecoder().decode(CustomObject.self, from: jsonResponse)
guard let requiredChoice = customObject.choices["123347"] else{
return
}
let option = requiredChoice.option
print(option)
CustomObject for your json:
struct CustomObject: Codable {
let type: String
let patient: Bool
let text: String
let id, position: Int
let options: String
let customObjectRequired: Bool
let choices: [String: Choice]
enum CodingKeys: String, CodingKey {
case type, patient, text, id, position, options
case customObjectRequired = "required"
case choices
}
}
struct Choice: Codable {
let option: String
let value: Int
}
There are many tools available to easily create struct/class for your json:
E.g: https://app.quicktype.io