How to create delegate/callback inside framework in Swift? [duplicate] - ios

Question

This question already has answers here:
How could I create a function with a completion handler in Swift?
(9 answers)
Closed 3 years ago.
I have been implementing login framework to use in app development. I have created login framework functionality and it works fine.
Now i'm trying to do callback of return response of whether it success or failed from app to framework wise versa framework to app.
here is my framework code:
public func loginApiCall(username: String?, password: String?) {
let parameters = [
"username": username,
"password": password
]
print(parameters)
let url = "apiUrl/authentication/"
Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: [:]).responseJSON {
response in
switch (response.result) {
case .success:
print(response)
break
case .failure:
print(Error.self)
}
}
}
Here is my sampleapp where i have using myframework:
override func viewDidLoad() {
super.viewDidLoad()
//framework called here...
let apiCall = APICall.init()
apiCall.loginApiCall(username: "demo", password: "demo")
}//viewdidload

Answer 1

you can achieve using callback
// framework code
public func loginApiCall(username: String?, password: String?, callback : #escaping ((Bool) -> Void)) {
let parameters = [
"username": username,
"password": password
]
print(parameters)
let url = "apiUrl/authentication/"
Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: [:]).responseJSON {
response in
switch (response.result) {
case .success:
callback(true)
case .failure:
callback(false)
}
}
}
// viewDidLoad code
override func viewDidLoad() {
super.viewDidLoad()
//framework called here...
let apiCall = APICall.init()
apiCall.loginApiCall(username: "demo", password: "demo") { (status) in
print("code")
}
}
//NOTE : create completionHandler as per your requirement, it is a demo completionHandler

Answer 2

first you have to define completion handler, after then you can use it inside of your function parameter. I suggest you to check out completions to achieve that easily.
typealias DownloadComplete = () -> ()
public func loginApiCall(username: String?, password: String?, completed: #escaping DownloadComplete))
{
let parameters = [
"username": username,
"password": password
]
print(parameters)
let url = "apiUrl/authentication/"
Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: [:]).responseJSON {
response in
switch (response.result) {
case .success:
completed(). // important part
case .failure:
}
}