iOS Swift App, Openweather API - ios

Question

I'm making a weather app using OpenweatherAPI. I download data from web, but when I want to pass it to another class it show as nil. Here is the code:
So that's the class I'm getting data from the API
var currentTemp: Double {
if _currentTemp == nil {
_currentTemp = 120.0
}
return _currentTemp
}
func downloadWeatherDetails(completed: #escaping DownloadComplete) {
Alamofire.request(CURRENT_WEATHER_URL).responseJSON { response in
let result = response.result
if let dict = result.value as? Dictionary<String, Any> {
if let main = dict["main"] as? Dictionary<String, Any> {
if let currentTemperature = main["temp"] as? double_t {
let kelvinToCelsiusPreDivision = (currentTemperature - 273.15)
let kelvinToCelsius = Double(round((10 * kelvinToCelsiusPreDivision) / 10))
self._currentTemp = kelvinToCelsius
print(self._currentTemp)
}
}
}
completed()
} }
And the mainVC - ViewController:
func updateMainUI() {
currentTempLabel.text = "\(currentWeather.currentTemp)"
}
I'm of course calling updateMainUI in ViewDidLoad, but IMHO I think the method that updates UI is probably called before getting the data from the JSON.
The Label on the App shows 120 - so it is considered as nil...
Sorry about parenthesis if there is something wrong.
Thanks for help in advice :)
EDIT:
Ohh and I forgot to add.. The data from API is perfectly fine, so the call to API is working :)

Answer 1

// I Hope that helps
func downloadWeatherDetails(completed: #escaping DownloadComplete) {
//Download Current Weather Data
Alamofire.request(CURRENT_WEATHER_URL).responseJSON { response in
let result = response.result
if let dict = result.value as? Dictionary<String, AnyObject> {
if let main = dict["main"] as? Dictionary<String, AnyObject> {
if let currentTemperature = main["temp"] as? Double {
let kelvinToFarenheitPreDivision = (currentTemperature * (9/5) - 459.67)
let kelvinToFarenheit = Double(round(10 * kelvinToFarenheitPreDivision/10))
self._currentTemp = kelvinToFarenheit
print(self._currentTemp)
}
}
}
completed()
}
}