Xcode : realm thread issue - xcode

Question

i am new to IOS development and i recently tried realm
the problem is that, i have to get the urls from a json file and then i put those urls in realm as an object ...and whenever i start my app again the URL variable would get the respected url from realm...
like this:
getUrls()
let realm = try! Realm()
// Query Realm for all dogs less than 2 years old
let urls = realm.objects(UrlCollector.self).first
let sss = realm.objects(UrlCollector.self)
print("no of objects in did load \(sss.count)")
loginUrl = urls!.login
print("login url inside didload \(loginUrl)")
but the problem is getUrls method...it updates the urls using almofire
getUrls method:
Alamofire.request("<<<myurl>>>", method: .post, encoding: JSONEncoding.default, headers: nil).responseJSON { (response:DataResponse<Any>) in
switch(response.result) {
case .success(_):
if let data = response.result.value{
print(data)
let data = JSON(data)
for item in data["result"].arrayValue {
let url = UrlCollector()
url.login = "\(self.server)\(item["login"].stringValue)"
print(url.login)
url.changePassword = "\(self.server)\(item["changePassword"].stringValue)"
print(url.changePassword)
url.phoneNumberVerify = "\(self.server)\(item["phoneNumberVerify"].stringValue)"
print(url.phoneNumberVerify)
url.sessionCheck = "\(self.server)\(item["sessionCheck"].stringValue)"
print(url.sessionCheck)
// Get the default Realm
let realm = try! Realm()
var urls = realm.objects(UrlCollector.self)
// Persist your data easily
try! realm.write {
realm.delete(urls)
realm.add(url)
}
// Query Realm for all dogs less than 2 years old
urls = realm.objects(UrlCollector.self)
print(urls.count)
}
}
break
case .failure(_):
print("Error message:\(response.result.error)")
break
}
}
}
this code runs on did load
my log:
no of objects in did load 1
login url inside didload
{
result = (
{
changePassword = "/iust_app/android/passwordChange.php";
login = "/iust_app/android/login.php";
phoneNumberVerify = "/iust_app/android/onNumberVerification.php";
sessionCheck = "/iust_app/android/sessionCheck.php";
}
);
}
/iust_app/android/login.php
/iust_app/android/passwordChange.php
/iust_app/android/onNumberVerification.php
/iust_app/android/sessionCheck.php
1
print("no of objects in did load \(sss.count)")
loginUrl = urls!.login
print("login url inside didload \(loginUrl)")
as you can see these runs before the request...Please read my log lines to understand

Answer 1

All network requests are executed asynchronously. If you want your code to be executed after you get a response from the server put it into the completion handler of this request.