I want to read almost a million addresses in foor loop using CLGeocoder and save their coordinates. I have also put a 2 second pause in each loop, but every time I want to run the program in Xcode, after 200 or 300 iterations, the program closes suddenly. Does anyone know the reason? Is there a problem with the code?
here is my code :
func createCSV(from recArray:[Dictionary<String, AnyObject>]) {
var csvString = "\("Adresse");\("latitute ");\("longitude")\n\n"
for dct in recArray {
csvString = csvString.appending("\(String(describing:dct["Adresse"]!));\(String(describing: dct["latitute"]!));\(String(describing: dct["longitude"]!))\n")
}
let fileManager = FileManager.default
do {
let path = try fileManager.url(for: .documentDirectory, in: .allDomainsMask, appropriateFor: nil, create: false)
let fileURL = path.appendingPathComponent("CSVRec.csv")
try csvString.write(to: fileURL, atomically: true, encoding: .utf8)
} catch {
print("error creating file")
}
}
func getLocation(for address: String) async throws -> CLLocationCoordinate2D {
guard let coordinate = try? await CLGeocoder().geocodeAddressString(address) else {
throw getLocationError.unableToGetLocation
}
return coordinate.first!.location!.coordinate
}
var Coordinates:[Dictionary<String, AnyObject>] = Array()
var address: String
for row in result.rows {
address = "\(row["LABE"] ?? "") \(row["HAUS"] ?? ""), \(row["Gemeindename"] ?? "")"
var coordinate = try await getLocation(for: address)
var dct = Dictionary<String, AnyObject>()
dct.updateValue(address as AnyObject, forKey: "Adresse")
dct.updateValue(coordinate.latitude as AnyObject, forKey: "latitute")
dct.updateValue(coordinate.longitude as AnyObject, forKey: "longitude")
Coordinates.append(dct)
sleep(2)
}
createCSV(from: Coordinates)
Does anyone have an idea what to do?