Fetch and Check internal (Local) JSON file in swift - ios

Question

I want to check city name From local JSON if found then massage show "You got it". But one problem came occurred that is I fetch data from file is successfully but I'd know how to compare it.
Here is my JSON file look like:
{
"data": [
{
"zip_code": 55001,
"latitude": 44.90717,
"longitude": -92.816193,
"city": "Afton",
"state": "MN",
"county": "Washington"
},
{
"zip_code": 55002,
"latitude": 45.513447,
"longitude": -92.894239,
"city": "Almelund",
"state": "MN",
"county": "Chisago"
}
]
}
Code is here:
func FatchingInformation(){
do {
if let file = Bundle.main.url(forResource: "Zone", withExtension: "json") {
let data = try Data(contentsOf: file)
let json = try JSONSerialization.jsonObject(with: data, options: [])
if let object = json as? [String: Any] {
// This condition work and Get JSON on Debug Area
print("Obj is ::: \(object)")
} else if let object = json as? [Any] {
// json is an array
print("Object is \(object)")
} else {
print("JSON is invalid")
}
} else {
print("no file")
}
} catch {
print(error.localizedDescription)
}
}

Answer 1

you are in right way on your JSON is dict of array of dictionary, you need to iterate your [String: Any] first there after check it contains array or dict then you need to follow as below
if let object = json as? [String: Any], let objectArray = object["data"] as? [[String: Any]] {
// do stuff
for getDictItems in objectArray{
if let getCityCompare = getDictItems["city"] as? String, !getCityCompare.isEmpty, getCityCompare == "Almelund"{
print("city name is \(getCityCompare)")
break
}
}
}

Answer 2

You ca use decodable Struct to decode json
// MARK: - Address
struct Address: Codable {
let data: [Datum]
}
// MARK: - Datum
struct Datum: Codable {
let zipCode: Int
let latitude, longitude: Double
let city, state, county: String
enum CodingKeys: String, CodingKey {
case zipCode = "zip_code"
case latitude, longitude, city, state, county
}
}
let address = try? JSONDecoder().decode(Address.self, from: jsonData)