How i can Load POST URLRequest with parameter in WKWebView? - ios

Question

Sorry For this my English is weak
I try many types of a solution but not working in Xcode 11.2.1 and swift 5
I try this
var urlRequest = URLRequest(url: URL(string: "https://xxxxxx/login")!)
urlRequest.httpMethod = "POST"
let params = [
"username": SessionManager.shared.username!,
"password": SessionManager.shared.password!,
"vhost": "standard"
]
let postString = self.getPostString(params: params)
urlRequest.httpBody = postString.data(using: .utf8)
webView.load(urlRequest)
...
//helper method to build url form request
func getPostString(params:[String:String]) -> String
{
var data = [String]()
for(key, value) in params
{
data.append(key + "=\(value)")
}
return data.map { String($0) }.joined(separator: "&")
}
and this
Post Request with Parameter
And also try to add below lines in my code
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
But not Working
I fire the Request because not working the WKWebView screen is Open but not Load request.
If I not set navigationDelegate and open normal URL then it is working completely
If I set navigationDelegate then blank page come in all Request Like Normal URL fire or post parameter URL fire, All are coming to Blank Page in
I can't understand what is the Problem with WKWebView
Please help me.
Thanks in advance

Answer 1

The request body uses the same format as the query string:
parameter=value&also=another
Therefore the content type of your request is of type application/x-www-form-urlencoded :
let postString = self.getPostString(params: params)
urlRequest.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
urlRequest.httpMethod = "POST"
urlRequest.httpBody = postString.data(using: .utf8)
webView.load(urlRequest)

Answer 2

Try this, we will initiate a POST request using URLSession convert the data returned by the server to String and instead of loading the url we will use loadHTMLString which will:
Set the webpage contents and base URL.
and the content is our converted string::-
var request = URLRequest(url: URL(string: "http://www.yourWebsite")!)
request.httpMethod = "POST"
let params = "Your Parameters"
request.httpBody = params.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { (data : Data?, response : URLResponse?, error : Error?) in
if data != nil {
if let returnString = String(data: data!, encoding: .utf8) {
self.webView.loadHTMLString(returnString, baseURL: URL(string: "http://www.yourWebsite.com")!)
}
}
}
task.resume()

Answer 3

I think we not need to use URLSession.dataTask, simply create URLRequest and declare your method + with stating header fields like this:
private final func postRequestToURL(_ urlString: String) {
guard let url = URL(string: urlString) else {
debugPrint("Error: Invailed URL!")
return
}
var parameters = Parameters()
parameters["name"] = "Example"
parameters["surname"] = "ExmpleExample"
parameters["timeZone"] = "MiddleEast/MENA"
parameters["test"] = "YES"
var urlRequest = URLRequest(url: url)
urlRequest.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
urlRequest.setValue("application/json", forHTTPHeaderField: "Accept")
urlRequest.allowsCellularAccess = true
urlRequest.httpMethod = "POST"
let postString = parameters.getPostString()
urlRequest.httpBody = postString.data(using: .utf8)
if let wkNavigation = self.webView.load(urlRequest) {
debugPrint("Success: \(wkNavigation.description)")
} else {
debugPrint("Failure: Cannot load current request.")
}
}
Here we can convert our parameters to String by this extension:
public extension Dictionary where Key == String, Value == Any {
func getPostString() -> String {
var data = [String]()
for(key, value) in self {
data.append(key + "=\(value)")
}
return data.map { String($0) }.joined(separator: "&")
}
}
I am using this code over my commercial app.
Additional info: I allowed request eligible to run over cellular by marking allowsCellularAccess = true this is optional