How to parse JSONObject in SWIFT - json

Question

I have api file that returns the following JSONObject
{"result":[{"eventID":"1","regionID":"2","venue":"Saxafi Hotel","eventName":"VDATE","startDateTime":"2019-04-17 16:00:00","endDateTime":"2019-04-18 21:30:00"}]}
I can parse if its JSONArray
[{"eventID":"1","regionID":"2","venue":"Saxafi Hotel","eventName":"VDATE","startDateTime":"2019-04-17 16:00:00","endDateTime":"2019-04-18 21:30:00"}]
func parseJSON(_ data: Data){
var jsonResult = NSArray()
do{
jsonResult = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments) as! NSArray
}catch let error as NSError{
print(error)
}
var jsonElement = NSDictionary()
let stocks = NSMutableArray()
for i in 0 ..< jsonResult.count
{
jsonElement = jsonResult[i] as! NSDictionary
let stock = StockModel()
if let name = jsonElement["venue"] as? String,
let price = jsonElement["regionID"] as? String
{
print(name)
print(price)
stock.name = name
stock.price = price
}
stocks.add(stock)
}
DispatchQueue.main.async(execute: {() -> Void in
self.delegate.itemsDownload(items: stocks)
})
}
I am new in IOS I am familiar in Android and I was using to parse
this
JSONObject object = new JSONObject(response); JSONArray array=object.getJSONArray("result");

Answer 1

Your data types will look like,
// MARK: - Response
struct Response: Codable {
let result: [Result]
}
// MARK: - Result
struct Result: Codable {
let eventID, regionID, venue, eventName: String
let startDateTime, endDateTime: String
}
// Get Data from the API and decode response as below,
do {
let response = try JSONDecoder().decode(Response.self, from: data)
response.result.forEach { result in
print(result.eventName)
}
} catch {
print(error)
}

Answer 2

You can try
struct Root:Codable {
let result:[Result]
}
struct Result:Codable {
let eventID,regionID,venue,eventName:String
let startDateTime,endDateTime:Date
}
do {
let dec = JSONDecoder()
let df = DateFormatter()
df.dateFormat = "yyy-MM-dd HH:mm:ss"
dec.dateDecodingStrategy = .formatted(df)
let res = try dec.decode(Root.self, from:data)
}
catch {
print(error)
}
Or you can get rid of Root and do
do {
let con = try JSONSerialization.jsonObject(with:data) as! [String:Any]
let www = try JSONSerialization.data(withJSONObject:con["result"]!)
let dec = JSONDecoder()
let df = DateFormatter()
df.dateFormat = "yyy-MM-dd HH:mm:ss"
dec.dateDecodingStrategy = .formatted(df)
let res = try dec.decode([Result].self, from:www)
print(res)
}
catch {
print(error)
}