How to extract data from networking class into variable in same class so that it can be accessed from other class in ios - ios

Question

How to extract data from networking class into variable in same class so that it can be accessed from other class in ios
Code for Networking Class
import Foundation
struct NetworkManager {
func fetchData(url : String) {
print("Neeraj here")
let sessionURL = URL(string: url)
let session = URLSession(configuration: .default)
let dataTask = session.dataTask(with: sessionURL!) { (data, response, error) in
if error == nil {
if let safeData = data {
if let parsedData = self.parseData(data : safeData) {
print("got data")
}
}
}
else {
print("error in data task is \(String(describing: error))")
}
}
dataTask.resume()
}
func parseData(data : Data) -> DataModel? {
let decoder = JSONDecoder()
do {
let decodedData = try decoder.decode(DataModel.self, from: data)
return decodedData
} catch {
print("error while parsing data \(error)")
return nil
}
}
}
Here where i am getting data, i want that data to be stored somewhere or in same class so that i can access it from class i am calling this method fetchData

Answer 1

You can use the closure to return the value out of the function. This practice is functional programming, almost using for async function.
func fetchData(url: String, completion: (DataModel?) -> ()) {
...
if let parsedData = self.parseData(data : safeData) {
print("got data")
completion(parsedData)
} else {
completion(nil)
}
}
And then, to use it:
NetworkManager().fetchData(url: "https://google.com", completion: { data in
// handle the “data”
})