I wonder if it's possible to directly send an array (not wrapped in a dictionary) in a POST request. Apparently the parameters parameter should get a map of: [String: AnyObject]?
But I want to be able to send the following example json:
[
"06786984572365",
"06644857247565",
"06649998782227"
]
You can just encode the JSON with NSJSONSerialization and then build the NSURLRequest yourself. For example, in Swift 3:
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
let values = ["06786984572365", "06644857247565", "06649998782227"]
request.httpBody = try! JSONSerialization.data(withJSONObject: values)
AF.request(request) // Or `Alamofire.request(request)` in prior versions of Alamofire
.responseJSON { response in
switch response.result {
case .failure(let error):
print(error)
if let data = response.data, let responseString = String(data: data, encoding: .utf8) {
print(responseString)
}
case .success(let responseObject):
print(responseObject)
}
}
For Swift 2, see previous revision of this answer.
For swift 3 and Alamofire 4 I use the following ParametersEncoding and Array extension:
import Foundation
import Alamofire
private let arrayParametersKey = "arrayParametersKey"
/// Extenstion that allows an array be sent as a request parameters
extension Array {
/// Convert the receiver array to a `Parameters` object.
func asParameters() -> Parameters {
return [arrayParametersKey: self]
}
}
/// Convert the parameters into a json array, and it is added as the request body.
/// The array must be sent as parameters using its `asParameters` method.
public struct ArrayEncoding: ParameterEncoding {
/// The options for writing the parameters as JSON data.
public let options: JSONSerialization.WritingOptions
/// Creates a new instance of the encoding using the given options
///
/// - parameter options: The options used to encode the json. Default is `[]`
///
/// - returns: The new instance
public init(options: JSONSerialization.WritingOptions = []) {
self.options = options
}
public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var urlRequest = try urlRequest.asURLRequest()
guard let parameters = parameters,
let array = parameters[arrayParametersKey] else {
return urlRequest
}
do {
let data = try JSONSerialization.data(withJSONObject: array, options: options)
if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
}
urlRequest.httpBody = data
} catch {
throw AFError.parameterEncodingFailed(reason: .jsonEncodingFailed(error: error))
}
return urlRequest
}
}
Basically, it converts the array to a Dictionary in order to be accepted as Parameters argument, and then it takes back the array from the dictionary, convert it to JSON Data and adds it as the request body.
Once you have it, you can create request this way:
let values = ["06786984572365", "06644857247565", "06649998782227"]
Alamofire.request(url,
method: .post,
parameters: values.asParameters(),
encoding: ArrayEncoding())
Here is an example of encoding an Array of type Thing to JSON, using a router, and Ogra to do the JSON encoding:
import Foundation
import Alamofire
import Orga
class Thing {
...
}
enum Router: URLRequestConvertible {
static let baseURLString = "http://www.example.com"
case UploadThings([Thing])
private var method: Alamofire.Method {
switch self {
case .UploadThings:
return .POST
}
}
private var path: String {
switch self {
case .UploadThings:
return "upload/things"
}
}
var URLRequest: NSMutableURLRequest {
let r = NSMutableURLRequest(URL: NSURL(string: Router.baseURLString)!.URLByAppendingPathComponent(path))
r.HTTPMethod = method.rawValue
switch self {
case .UploadThings(let things):
let custom: (URLRequestConvertible, [String:AnyObject]?) -> (NSMutableURLRequest, NSError?) = {
(convertible, parameters) in
var mutableRequest = convertible.URLRequest.copy() as! NSMutableURLRequest
do {
let jsonObject = things.encode().JSONObject()
let data = try NSJSONSerialization.dataWithJSONObject(jsonObject, options: NSJSONWritingOptions.PrettyPrinted)
mutableRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
mutableRequest.HTTPBody = data
return (mutableRequest, nil)
} catch let error as NSError {
return (mutableRequest, error)
}
}
return ParameterEncoding.Custom(custom).encode(r, parameters: nil).0
default:
return r
}
}
}
Swift 2.0
This code below post object array.This code is tested on swift 2.0
func POST(RequestURL: String,postData:[AnyObject]?,successHandler: (String) -> (),failureHandler: (String) -> ()) -> () {
print("POST : \(RequestURL)")
let request = NSMutableURLRequest(URL: NSURL(string:RequestURL)!)
request.HTTPMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
var error: NSError?
do {
request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(postData!, options:[])
} catch {
print("JSON serialization failed: \(error)")
}
Alamofire.request(request)
.responseString{ response in
switch response.result {
case .Success:
print(response.response?.statusCode)
print(response.description)
if response.response?.statusCode == 200 {
successHandler(response.result.value!)
}else{
failureHandler("\(response.description)")
}
case .Failure(let error):
failureHandler("\(error)")
}
}
}
#manueGE 's answer is right. I have a similar approach according to alamofire github's instruction:
`
struct JSONDocumentArrayEncoding: ParameterEncoding {
private let array: [Any]
init(array:[Any]) {
self.array = array
}
func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var urlRequest = urlRequest.urlRequest
let data = try JSONSerialization.data(withJSONObject: array, options: [])
if urlRequest!.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest!.setValue("application/json", forHTTPHeaderField: "Content-Type")
}
urlRequest!.httpBody = data
return urlRequest!
}
}
`
Then call this by customize a request instead of using the default one with parameter. Basically discard the parameter, since it is a dictionary.
let headers = getHeaders()
var urlRequest = URLRequest(url: URL(string: (ServerURL + Api))!)
urlRequest.httpMethod = "post"
urlRequest.allHTTPHeaderFields = headers
let jsonArrayencoding = JSONDocumentArrayEncoding(array: documents)
let jsonAryEncodedRequest = try? jsonArrayencoding.encode(urlRequest, with: nil)
request = customAlamofireManager.request(jsonAryEncodedRequest!)
request?.validate{request, response, data in
return .success
}
.responseJSON { /*[unowned self] */(response) -> Void in
...
}
Also, the way to handle error in data is very helpful.
let url = try Router.baseURL.asURL()
// Make Request
var urlRequest = URLRequest(url: url.appendingPathComponent(path))
urlRequest.httpMethod = "post"
// let dictArray: [[String: Any]] = []
urlRequest = try! JSONEncoding.default.encode(urlRequest, withJSONObject: dictArray)
Something I do in my project to upload a JSON array
func placeOrderApi(getUserId:String,getDateId:String,getTimeID:String,getAddressId:String,getCoupon:String)
{
let data = try! JSONSerialization.data(withJSONObject: self.arrOfServices, options: [])
let jsonBatch : String = String(data: data, encoding: .utf8)!
//try! JSONSerialization.data(withJSONObject: values)
let params = [
"user_id":getUserId,
"time_id":getTimeID,
"date_id":getDateId,
"address_id":getAddressId,
"services":jsonBatch,
"payment_mode":paymentVia,
"coupon":getCoupon
] as [String : Any]
print(params)
self.objHudShow()
Alamofire.request(BaseViewController.API_URL + "place_order", method: .post, parameters: params, encoding: JSONEncoding.default)
.responseJSON { response in
debugPrint(response)
switch response.result {
case .success (let data):
print(data)
self.objHudHide()
if response.result.value != nil
{
let json : JSON = JSON(response.result.value!)
if json["status"] == true
{
}
else
{
self.view.makeToast(NSLocalizedString(json["msg"].string ?? "", comment: ""), duration: 3.0, position: .bottom)
}
}
break
case .failure:
self.objHudHide()
print("Error in upload:)")
break
}
}
}
There are 2 approach to send send JSON content as parameter.
You can send json as string and your web service will parse it on server.
d["completionDetail"] = "[{"YearOfCompletion":"14/03/2017","Completed":true}]"
You can pass each value within your json (YearOfCompletion and Completed) in form of sequential array. And your web service will insert that data in same sequence. Syntax for this will look a like
d["YearOfCompletion[0]"] = "1998"
d["YearOfCompletion[1]"] = "1997"
d["YearOfCompletion[2]"] = "1996"
d["Completed[0]"] = "true"
d["Completed[1]"] = "false"
d["Completed[2]"] = "true"
I have been using following web service call function with dictionary, to trigger Alamofire request Swift3.0.
func wsDataRequest(url:String, parameters:Dictionary<String, Any>) {
debugPrint("Request:", url, parameters as NSDictionary, separator: "\n")
//check for internete collection, if not availabale, don;t move forword
if Rechability.connectedToNetwork() == false {SVProgressHUD.showError(withStatus: NSLocalizedString("No Network available! Please check your connection and try again later.", comment: "")); return}
//
self.request = Alamofire.request(url, method: .post, parameters: parameters)
if let request = self.request as? DataRequest {
request.responseString { response in
var serializedData : Any? = nil
var message = NSLocalizedString("Success!", comment: "")//MUST BE CHANGED TO RELEVANT RESPONSES
//check content availability and produce serializable response
if response.result.isSuccess == true {
do {
serializedData = try JSONSerialization.jsonObject(with: response.data!, options: JSONSerialization.ReadingOptions.allowFragments)
//print(serializedData as! NSDictionary)
//debugPrint(message, "Response Dictionary:", serializedData ?? "Data could not be serialized", separator: "\n")
}catch{
message = NSLocalizedString("Webservice Response error!", comment: "")
var string = String.init(data: response.data!, encoding: .utf8) as String!
//TO check when html coms as prefix of JSON, this is hack mush be fixed on web end.
do {
if let index = string?.characters.index(of: "{") {
if let s = string?.substring(from: index) {
if let data = s.data(using: String.Encoding.utf8) {
serializedData = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments)
debugPrint(message, "Courtesy SUME:", serializedData ?? "Data could not be serialized", separator: "\n")
}
}
}
}catch{debugPrint(message, error.localizedDescription, "Respone String:", string ?? "No respone value.", separator: "\n")}
//let index: Int = text.distance(from: text.startIndex, to: range.lowerBound)
debugPrint(message, error.localizedDescription, "Respone String:", string ?? "No respone value.", separator: "\n")
}
//call finised response in all cases
self.delegate?.finished(succes: response.result.isSuccess, and: serializedData, message: message)
}else{
if self.retryCounter < 1 {//this happens really frequntly so in that case this fn being called again as a retry
self.wsDataRequest(url: url, parameters: parameters)
}else{
message = response.error?.localizedDescription ?? (NSLocalizedString("No network", comment: "")+"!")
SVProgressHUD.showError(withStatus: message);//this will show errror and hide Hud
debugPrint(message)
//call finised response in all cases
self.delay(2.0, closure: {self.delegate?.finished(succes: response.result.isSuccess, and: serializedData, message:message)})
}
self.retryCounter += 1
}
}
}
}
I think based on Alamofire documentation you can write the code as following:
let values = ["06786984572365", "06644857247565", "06649998782227"]
Alamofire.request(.POST, url, parameters: values, encoding:.JSON)
.authenticate(user: userid, password: password)
.responseJSON { (request, response, responseObject, error) in
// do whatever you want here
if responseObject == nil {
println(error)
} else {
println(responseObject)
}
}
Related
I have the following Struct that I want to initialize, and then use its method query() to mutate its result property.
Query() sends and fetches JSON data, then decodes it to a String. When I declare query() as a mutating function, I receive the error "Escaping closure captures mutating 'self' parameter" in my URLSession.
What do I need to change?
The call:
var translation = Translate(string: "hello", base: "en", target: "de", result: "")
translation.query()
let translated = translation.result
The struct:
struct Translate {
let string: String, base: String, target: String
var result: String
mutating func query() {
let body: [String: String] = ["q": self.string, "source": self.base, "target": self.target]
let bodyData = try? JSONSerialization.data(withJSONObject: body)
guard let url = URL(string: "https://libretranslate.com/translate") else { return }
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = bodyData
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil else {
print(error?.localizedDescription ?? "No data")
return
}
DispatchQueue.main.async {
let responseJSON = try? JSONSerialization.jsonObject(with: data, options: [])
if let responseJSON = responseJSON as? [String: Any] {
if responseJSON["translatedText"] != nil {
self.result = responseJSON["translatedText"] as! String
}
}
}
return
}
.resume()
}
}
Xcode error:
There are many issues in the code.
The most significant issue is that the URLRequest is asynchronous. Even if no error occurred result will be always empty.
You have to add a completion handler – it fixes the errors you got by the way – and it's highly recommended to handle all errors.
Instead of JSONSerialization the code uses JSONDe/Encoder
struct Translation : Decodable { let translatedText : String }
struct Translate {
let string: String, base: String, target: String
func query(completion: #escaping (Result<String,Error>) -> Void) {
let body: [String: String] = ["q": self.string, "source": self.base, "target": self.target]
do {
let bodyData = try JSONEncoder().encode(body)
let url = URL(string: "https://libretranslate.com/translate")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = bodyData
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
URLSession.shared.dataTask(with: request) { data, response, error in
if let error = error { completion(.failure(error)); return }
completion( Result{ try JSONDecoder().decode(Translation.self, from: data!).translatedText} )
}
.resume()
} catch {
completion(.failure(error))
}
}
}
let translation = Translate(string: "hello", base: "en", target: "de")
translation.query() { result in
DispatchQueue.main.async {
switch result {
case .success(let translated): print(translated)
case .failure(let error): print(error)
}
}
}
Both exclamation marks (!) are safe.
I want to send more than one "davetiyeID". For this, I send the DAVMED_ID array as a parameter. But when printing, I get blank output. What do I need to do to send more than one value? So I want to send more than one davetiyeID. Is it possible for me to do this? Can I send 3-4 invitation IDs instead of one davetiyeID?
extension Array {
/// Convert the receiver array to a `Parameters` object.
func asParameters() -> Parameters {
return [arrayParametersKey: self]
}
}
var DAVMED_ID : [String] = []
public struct ArrayEncoding: ParameterEncoding {
public let options: JSONSerialization.WritingOptions
public init(options: JSONSerialization.WritingOptions = []) {
self.options = options
}
public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var urlRequest = try urlRequest.asURLRequest()
guard let parameters = parameters,
let array = parameters[arrayParametersKey] else {
return urlRequest
}
do {
let data = try JSONSerialization.data(withJSONObject: array, options: options)
if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
}
urlRequest.httpBody = data
} catch {
throw AFError.parameterEncodingFailed(reason: .jsonEncodingFailed(error: error))
}
return urlRequest
}
}
#objc func favKontrol(){
let url = URL(string: "...")!
var request = URLRequest(url: url)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
Alamofire.request(
url,
method: .post,
parameters: DAVMED_ID.asParameters(),
encoding: ArrayEncoding(),
headers: nil).responseJSON { (responseData) -> Void in
switch (responseData.result) {
case .success(let result):
...
}
Header:
let header = ["Content-Type" : "application/x-www-form-urlencoded", "Authorization" : "Basic " + self.basicAuth];
Body:
var body : [String : AnyObject] = [:];
let body = ["grant_type" : "client_credentials", "scope" : "MessageSender"];
The Request and Serialization:
private func makeHTTPPostRequest(path: String, header: [String : String], body: [String: AnyObject], onCompletion: #escaping ServiceResponse) {
let request = NSMutableURLRequest(url: NSURL(string: path)! as URL)
// Set the method to POST
request.httpMethod = "POST"
do {
// Set the POST body for the request
let jsonBody = try JSONSerialization.data(withJSONObject: body, options: .prettyPrinted)
request.httpBody = jsonBody
let session = URLSession.shared
request.allHTTPHeaderFields = header;
let task = session.dataTask(with: request as URLRequest, completionHandler: {data, response, error -> Void in
if let httpResponse = response as? HTTPURLResponse {
if let jsonData = data {
let json:JSON = JSON(data: jsonData)
print(response)
print(json)
onCompletion(json,httpResponse, error as NSError?)
} else {
onCompletion(JSON.null,HTTPURLResponse.init(), error as NSError?)
}
}
})
task.resume()
} catch {
onCompletion(JSON.null,HTTPURLResponse.init(), nil)
}
}
}
When the request is done, it fires a 400 response with
{
"error_description" : "grant_type parameter is requiered field and it has to be non empty string.",
"error" : "invalid_request"
}
Obviously the body is not set correctly but I really don´t know why. I´m using this piece of code in other applications with no problem... .
The same request works like charm in Postman. The body in postman is set with type x-www-form-urlencoded.
Maybe the JSONSerialization is wrong ?
To send a POST request with Content-Type: application/x-www-form-urlencoded;, you need to create a URL query-like String and then convert it to a Data. Your code or any Swift Standard Library functions do not have the functionality. You may need to write it by yourself, or find a suitable third-party library. (Of course JSONSerialization is not suitable here, the String is not a JSON.)
With given a Dictionary<String, String>, you can do it like this:
var body: [String: String] = [:]
body = ["grant_type": "client_credentials", "scope": "MessageSender"]
(Simplified...)
request.httpBody = body.map{"\($0)=\($1)"}.joined(separator: "&").data(using: .utf8)
//`body.map{"\($0)=\($1)"}.joined(separator: "&")` -> grant_type=client_credentials&scope=MessageSender
(Strict... 4.10.22.6 URL-encoded form data)
extension CharacterSet {
static let wwwFormUrlencodedAllowed = CharacterSet(charactersIn: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._*" + "+")
}
extension String {
var wwwFormUrlencoded: String {
return self
.replacingOccurrences(of: " ", with: "+")
.addingPercentEncoding(withAllowedCharacters: .wwwFormUrlencodedAllowed)!
}
}
class HTTPBody {
static func wwwFormUrlencodedData(withDictionary dict: [String: String]) -> Data {
return body
.map{"\($0.wwwFormUrlencoded)=\($1.wwwFormUrlencoded)"}
.joined(separator: "&").data(using: .utf8)!
}
}
request.httpBody = HTTPBody.wwwFormUrlencodedData(withDictionary: body)
(Remember, not many servers interpret the received form data as strictly generated.)
One more, this is not a critical issue in this case, but you should better use Swift classes rather than NS-something:
typealias ServiceResponse = (JSON, HTTPURLResponse?, Error?)->Void
private func makeHTTPPostRequest(path: String, header: [String : String], body: [String: String], onCompletion: #escaping ServiceResponse) {
var request = URLRequest(url: URL(string: path)!)
// Set the method to POST
request.httpMethod = "POST"
// Set the POST body for the request (assuming your server likes strict form data)
request.httpBody = HTTPBody.wwwFormUrlencodedData(withDictionary: body)
let session = URLSession.shared
request.allHTTPHeaderFields = header;
let task = session.dataTask(with: request, completionHandler: {data, response, error -> Void in
if let httpResponse = response as? HTTPURLResponse {
if let jsonData = data {
let json:JSON = JSON(data: jsonData)
print(response)
print(json)
onCompletion(json, httpResponse, error)
} else {
onCompletion(JSON.null, httpResponse, error)
}
}
})
task.resume()
}
What is the equivalent code of the following in Alamofire 4.3,Swift 3?
let baseUrl = "https://hiddenWebsite.com/api/index_load"
let url = URL(string: baseUrl)
let authObj = ["owner_id": "361900", "auth_key": "f408634ac1e14c08eebce46c34ab9db2", "device": "2", "version": "2.1.16"]
let infoObj = ["case": "feeds", "feeds_call_type": "init", "feed_type": "", "load_next_from": "1"]
let infoJSONData = try! JSONSerialization.data(withJSONObject: infoObj)
let infoStr = "info" + "=" + String(data: infoJSONData, encoding: String.Encoding.utf8)!
let authJSONData = try! JSONSerialization.data(withJSONObject: authObj)
let authStr = "auth" + "=" + String(data: authJSONData, encoding: String.Encoding.utf8)!
let combinedStr = infoStr + "&" + authStr
let reqdat = combinedStr.data(using: String.Encoding.utf8)
var request = URLRequest(url: url!)
request.httpMethod = "POST"
request.httpBody = reqdat
let defaultSession = URLSession.shared
defaultSession.dataTask(
with: request,
completionHandler: { data, response, error in
guard error == nil else {
print("Error while fetching data: \(error)")
return
}
guard let data = data,
let json = try? JSONSerialization.jsonObject(
with: data,
options: JSONSerialization.ReadingOptions.mutableContainers)
else {
print("Nil data received")
return
}
print(json)
}).resume()
I'm currently migrating from Apple's URLSession to Alamofire, but stuck at this point. I think this has something to do with encodingParameter.
This is my failed attempt. I also tried with URLEncoding.httpbody but didn't work.
let baseUrl = "https://hiddenWebsite.com/api/index_load"
let masterParameter = [
"auth": ["owner_id": "361900",
"auth_key": "f408634ac1e14c08eebce46c34ab9db2",
"device": "2",
"version": "2.1.16"],
"info": ["case": "feeds",
"feeds_call_type": "init",
"feed_type": "",
"load_next_from": "1"]
]
Alamofire.request(baseUrl, method: .post, parameters: masterParameter, encoding: JSONEncoding.default).responseJSON { (response) in
print(response)
}
The working postman equivalent of this looks like
Postman Screenshot
The encoding you are using it not valid JSON. Therefore, you cannot use JSON.default as your encoding type because it will encode your masterParameter dictionary as a valid JSON dictionary.
Instead, you either need to build your URLRequest manually as you have done in your first example and use the Alamofire.request(urlRequest) API, or you can create your own ParameterEncoding where you pass your data into it then encode the URLRequest.
Thanks cnoon for answering. The following code solved the issue:
public enum JSONError: Error {
case serializing(String)
case encoding
}
extension String: ParameterEncoding {
public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var request = try urlRequest.asURLRequest()
request.httpBody = self.data(using: String.Encoding.utf8)
return request
}
}
let encodedStr = try getEncodedString(parameters: masterParameter)
Alamofire.request(baseUrl, method: .post, parameters: [:], encoding: encodedStr).responseJSON { response in
print(response)
}
where getEncodedString(parameters:) is defined as:
func getEncodedString(parameters: Parameters) throws -> String {
var encodedStr = ""
for (key, value) in parameters {
let jsonData: Data
do {
jsonData = try JSONSerialization.data(withJSONObject: value)
}
catch(let error) {
throw JSONError.serializing(error.localizedDescription)
}
guard let encodedJsonString = String(data: jsonData, encoding: .utf8) else {
throw JSONError.encoding
}
let keyValueStr = key + "=" + encodedJsonString
encodedStr += keyValueStr + "&"
}
if encodedStr.characters.last == "&" {
encodedStr.remove(at: encodedStr.index(before: encodedStr.endIndex))
}
return encodedStr
}
When the parameter (params) values are incorrect, it still login to another view. In the console, both response body and response header return values when printed. Where have I gone wrong?
func login() {
let request = NSMutableURLRequest(URL: NSURL(string: "http://someurl/verify/")!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
let params =
[
"username":username.text!,
"password":password.text!,
"deviceid":"r49rvnjff",
"method":"method",
"payload":"payload"
]
as Dictionary<String,String>
print(params)
do {
request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(params, options: .PrettyPrinted)
}
catch {
print(error)
return
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
if error == nil {}
let json: NSDictionary?
do {
json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableLeaves) as? NSDictionary
}
catch let dataError {
print(dataError)
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: '\(jsonStr)'")
return
}
if let parseJSON = json {
let authenticated = parseJSON["authenticated"] as? String
print("authenticated:\(authenticated)")
if authenticated != "False" {
dispatch_async(dispatch_get_main_queue()) {
self.performSegueWithIdentifier("segue", sender: self)
}
}
}
else {
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: \(jsonStr)")
}
})
task.resume()
}
Thanks in advance!
What does your invalid response look like? might it be that its returning "false" and not "False" (which is what you are checking for), in any case I would recommend verifying your response from the server so that you can have the authenticated parameter be a boolean, so you can unwrap your optional as so:
if let authenticated = json["authenticated"] as? Bool {
if (authenticated)
{
// ...
}
}
Also, I noticed that your else block will never be hit because your json property is unwrapped. Your serialization is successful so json is not nil, hence the if let parseJSON = json will always work.
I would suggest the following approach:
if let authenticated = json["authenticated"] as? Bool
{
if (authenticated)
{
dispatch_async(dispatch_get_main_queue()) {
self.performSegueWithIdentifier("segue", sender: self)
}
}
else
{
let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Error could not parse JSON: \(jsonStr)")
}
}
Good luck!