Find value json array swift - arrays

Question

I'm trying to find a specific value in my JSON.
this my json
[
{
"airportName" : "Simon Mwansa Kapwepwe Intl",
"longitude" : 28.664999999999999,
"geometry" : {
"type" : "Point",
"coordinates" : [
28.664999999999999,
-12.994999999999999
]
},
"countryCode" : "ZMB",
"countryName" : "Zambia",
"latitude" : -12.994999999999999,
"cityName" : "Ndola",
"airportCode" : "FLSK"
},
{
"airportName" : "Mafikeng",
"longitude" : 25.544469444444445,
"geometry" : {
"type" : "Point",
"coordinates" : [
25.544469444444445,
-25.807447222222223
]
},
"countryCode" : "ZAF",
"countryName" : "South African Rep",
"latitude" : -25.807447222222223,
"cityName" : "Mafikeng",
"airportCode" : "FAMM"
}]
now if I write this code it works!
for item in 0...json.count {
i = i+1
if json[i]["airportName"] == "Simon Mwansa Kapwepwe Intl" {
print ("I found it")
}
if I try to pass the parameter to search with a function it doesn't work, swift give me a error say :Binary operator '==' cannot be applied to operands of type 'JSON' and 'String'
func cerca (nomeApt: String){
var i = 0
for item in 0...json.count {
i = i+1
if json[i]["airportName"] == nomeApt { // error I don't know
print ("I found it")
}
}
}
Honestly, I don't know why? any idea how to solve the issue? thanks a lot

Answer 1

You can try to use decodable,
And that will give you a simple array where you can loop and access the properties.
import Foundation
let json = """
[
{
"airportName" : "Simon Mwansa Kapwepwe Intl",
"longitude" : 28.664999999999999,
"geometry" : {
"type" : "Point",
"coordinates" : [
28.664999999999999,
-12.994999999999999
]
},
"countryCode" : "ZMB",
"countryName" : "Zambia",
"latitude" : -12.994999999999999,
"cityName" : "Ndola",
"airportCode" : "FLSK"
},
{
"airportName" : "Mafikeng",
"longitude" : 25.544469444444445,
"geometry" : {
"type" : "Point",
"coordinates" : [
25.544469444444445,
-25.807447222222223
]
},
"countryCode" : "ZAF",
"countryName" : "South African Rep",
"latitude" : -25.807447222222223,
"cityName" : "Mafikeng",
"airportCode" : "FAMM"
}
]
""".data(using: .utf8)!
struct Geometry: Decodable {
var type: String
var coordinates: [Double]
}
struct Airports: Decodable {
var airportName : String
var longitude : Double
var geometry: Geometry
var countryCode : String
var countryName: String
var latitude: Double
var cityName: String
var airportCode :String
}
func findSpecifAirport(airportName: String) -> Bool {
if let myStruct = try? JSONDecoder().decode([JsonDecoder].self, from: json) {
let foundSpecific = myStruct.filter { $0.airportName == airportName }
return !foundSpecific.isEmpty;
}
return false
}
you could use it like this
let hasFoundIt = findSpecifAirport(airportName: "Simon Mwansa Kapwepwe Intl")

Answer 2

Convert json to string, change the line to:
if json[i]["airportName"] as? String == nomeApt {