function Executes Completely before next line of code. - ios

Question

I have this code in my viewController. Problem is that when two functions called to load all data in CKRecord Object. Next Line of Code execute and prints 0 as record count. I want Swift to wait to for both functions to complete and then print their count. Help needed to solve this issue.
override func viewDidLoad() {
super.viewDidLoad()
view1.layer.borderWidth = 1
view1.layer.cornerRadius = 10
tableView.layer.borderWidth = 1
tableView.layer.cornerRadius = 10
loadNewData() // function that loads all partyAccounts
fetchPartyAccounts() // function to load all transactions
print(loadTransactionData.count)
print(partyAccountsData.count)
}
func loadNewData() {
let qry = CKQuery(recordType: "PartyAccounts", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
qry.sortDescriptors = [NSSortDescriptor(key: "Party_ID", ascending: true)]
publicDB.perform(qry, inZoneWith: nil) { (results, error) in
DispatchQueue.main.async {
if let rcds = results {
self.partyAccountsData = rcds
}
}
if error != nil {
self.showAlert(msg: (error?.localizedDescription)!)
}
}
self.tableView.reloadData()
}
func fetchPartyAccounts() {
let qry = CKQuery(recordType: "Transactions", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
qry.sortDescriptors = [NSSortDescriptor(key: "Party", ascending: true)]
publicDB.perform(qry, inZoneWith: nil) { (results, error) in
DispatchQueue.main.async {
if let rcds = results {
self.loadTransactionData = rcds
}
if error != nil {
self.showAlert(msg: (error?.localizedDescription)!)
}
}
}
self.tableView.reloadData()
}

Answer 1

You can try this:
override func viewDidLoad() {
super.viewDidLoad()
view1.layer.borderWidth = 1
view1.layer.cornerRadius = 10
tableView.layer.borderWidth = 1
tableView.layer.cornerRadius = 10
loadNewData(){
print(partyAccountsData.count)
} // function that loads all partyAccounts
fetchPartyAccounts() {
print(loadTransactionData.count)
} // function to load all transactions
// print(loadTransactionData.count)
// print(partyAccountsData.count)
}
func loadNewData(callback:#escaping () -> Void) {
let qry = CKQuery(recordType: "PartyAccounts", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
qry.sortDescriptors = [NSSortDescriptor(key: "Party_ID", ascending: true)]
publicDB.perform(qry, inZoneWith: nil) { (results, error) in
DispatchQueue.main.async {
if let rcds = results {
self.partyAccountsData = rcds
self.tableView.reloadData()
callback()
}
}
if error != nil {
self.showAlert(msg: (error?.localizedDescription)!)
}
}
}
func fetchPartyAccounts(callback:#escaping () -> Void) {
let qry = CKQuery(recordType: "Transactions", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
qry.sortDescriptors = [NSSortDescriptor(key: "Party", ascending: true)]
publicDB.perform(qry, inZoneWith: nil) { (results, error) in
DispatchQueue.main.async {
if let rcds = results {
self.loadTransactionData = rcds
callback()
self.tableView.reloadData()
}
if error != nil {
self.showAlert(msg: (error?.localizedDescription)!)
}
}
}
}

Answer 2

Do something like this..
variable_A= your_First_Function()
variable_B= your_Second_Function()
print(variable_A)
print(variable_B
hope this will solve your problem. Although not sure but you can give it a try. Do let me know if it worked.