when I call this function the array 'data' is showing empty square brackets, it is not giving me any errors though
here is the code :-
import Foundation
import Alamofire
import SwiftyJSON
class Networking {
var data = [Item]()
let tVC = TableViewController()
let url = "https://api.coinmarketcap.com/v1/ticker/"
func getCoinData(url: String) {
Alamofire.request(url, method: .get)
.responseJSON { response in
if response.result.isSuccess {
let coinJSON : JSON = JSON(response.result.value!)
for i in 0..<coinJSON.count{
let coinName = Item(bitJSON: coinJSON[i])
self.data.append(coinName)
self.tVC.tableView.reloadData()
}
}
else {
print("Error: \(String(describing: response.result.error))")
}
}
}
}
Try this one.
Change your url, method is "Get" and your mapping model.
public static func getArrayInformation(completionHandler: #escaping (APIResponse) -> Void) {
let url = "your url"
let params: Parameters = ["username": "admin",
"password": "1234"]
Alamofire.request(url,
method: .post,
parameters: params,
encoding: JSONEncoding.default,
headers: ["Content-Type": "application/json"])
.responseDecodableObject(keyPath: nil, decoder: JSONDecoder(), completionHandler: { (handler: DataResponse<[Your Object Array]>) in
completionHandler(handler.result.value ?? [Your Object Array]())
})
}
why you reload Table every loop iteration , and instead Loop use Map
class Networking {
var data = [Item]()
let tVC = TableViewController()
let url = "https://api.coinmarketcap.com/v1/ticker/"
func getCoinData(url: String) {
Alamofire.request(url, method: .get)
.responseJSON { response in
if response.result.isSuccess {
let coinJSON : JSON = JSON(response.result.value!)
data = coinJSON.map({ (coinJson) -> Item in
return Item(bitJSON: coinJson)
})
DispatchQueue.main.async {
self.tVC.tableView.reloadData()
}
}
else {
print("Error: \(String(describing: response.result.error))")
}
}
}
}
I'm getting an error on the let jsonData = result as! NSDictionary line. Any possible ways to help me fix this issue.
#objc func registerUser(button: UIButton) {
//Creating parameters for post request
let parameters: Parameters = ["username": userName.text!, "password": passWord.text!, "email": emailField.text!, "name": nameField.text!]
//Sending http post request
Alamofire.request(urlUserRegister, method: .post, parameters: parameters, encoding: JSONEncoding.default).responseString {
response in
//printing response
print(response)
//getting the json value from the server
if let result = response.result.value {
//Convert as NSDictionary
let jsonData = result as! NSDictionary //This is where the error occcurs
//displaying the message in label
self.messageLabel.text = jsonData.value(forKey: "message") as? String
}
}
}
Remove responseString and put instead responseJSON
Alamofire.request(urlUserRegister, method: .post, parameters: parameters, encoding: JSONEncoding.default).responseJSON {
if let result = response.result.value as? [String:Any] {
if let message = result["message"] as? String {
print(message)
}
}
}
I am trying to create a callback on swift 3 but haven't had any luck so far. I was taking a look at this question: link which is similar, but the answer gives me an error.
Basically I have an API struct with a static function that I need to have a callback.
import UIKit
struct API {
public static func functionWithCallback(params: Dictionary<String, String>, success: #escaping ((_ response: String) -> Ticket), failure: #escaping((_ error:String) -> String) ) {
let app_server_url = "http://api.com" + params["key"]!
let url: URL = URL(string: app_server_url)!
var request: URLRequest = URLRequest(url: url)
request.httpMethod = "POST"
do {
request.httpBody = try JSONSerialization.data(withJSONObject: params, options: .prettyPrinted)
} catch let error {
print(error.localizedDescription)
}
request.addValue("application/json charset=utf-8", forHTTPHeaderField: "Content-Type")
request.addValue("application/json charset=utf-8", forHTTPHeaderField: "Accept")
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in
guard error == nil else {
return
}
guard let data = data else {
return
}
DispatchQueue.main.async {
do {
let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
print(json)
var message = ""
if let result = json["result"] as? String {
if(result == "success") {
//attempt to call callback gives me an error: extra argument in call
success("") {
let ticket = json["ticket"] as! NSDictionary
var date = ticket["date"] as! String
var ticket: Ticket = nil
ticket.setDate(date: date)
return ticket
}
}
else {
message = json["message"] as! String
print(message)
}
} catch let error {
print(error.localizedDescription)
let description = error.localizedDescription
if let data = description.data(using: .utf8) {
do {
let jsonError = try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
let message = jsonError?["message"] as! String
} catch {
}
}
}
}
})
task.resume()
}
}
So I basically can't call the callback success because it gives me an error: Extra argument in call. Any idea on how to fix it?
My goal is to call:
API.functionWithCallback(params: params, success() -> Ticket {
//do something with the returned ticket here
},
error() -> () {
//do something with the error message here
}
)
I believe you have it wrong on how to use call back closures, from what I can understand of your question you want to do something with the ticket in the call back closure and to do that it should be a parameter of the closure not the return type of the closure.
Replace your function declaration with this:
public static func functionWithCallback(params: Dictionary<String, String>, success: #escaping ((_ response: String, _ ticket: Ticket) -> Void), failure: #escaping((_ error:String) -> Void) ) {
And inside the function replace this:
success("") {
let ticket = json["ticket"] as! NSDictionary
var date = ticket["date"] as! String
var ticket: Ticket = nil // Im not sure what you are trying to do with this line but this will definitely give an error
ticket.setDate(date: date)
return ticket
}
With:
let ticket = json["ticket"] as! NSDictionary
var date = ticket["date"] as! String
var ticket: Ticket = nil // fix this line
ticket.setDate(date: date)
success("",ticket)
And then you can call the function like this:
API.functionWithCallback(params: params, success: { response, ticket in
// you can use ticket here
// and also the response text
}) { errorMessage in
// use the error message here
}
Try this :
func uploadImage(api: String,token : String, methodType : String, requestDictionary: [String:AnyObject],picData:[Data], successHandler: #escaping (AnyObject) -> Void,failureHandler: #escaping (NSError) -> Void)
{
if Common_Methods.Reachability1.isConnectedToNetwork() == false
{
let del :AppDelegate = (UIApplication.shared.delegate as? AppDelegate)!
let nav : UINavigationController = (del.window?.rootViewController as? UINavigationController)!
let alert = UIAlertController(title: "", message: "The Internet connection appears to be offline" , preferredStyle: UIAlertControllerStyle.alert)
// Create the actions
let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default)
{
UIAlertAction in
}
alert.addAction(okAction)
nav.present( alert, animated: true, completion: nil)
return
}
let apiUrl = "\(KbaseUrl)\(api)"
let session = URLSession.shared
let url: NSURL = NSURL(string: apiUrl as String)!
print(url)
let request = NSMutableURLRequest(url: url as URL)
request.httpMethod = methodType
let boundary = NSString(format: "---------------------------14737809831466499882746641449") as String
//-------- add token as perameter and set a check if token not nill then set token in header -------
if(token.characters.count > 0)
{
request.setValue(token, forHTTPHeaderField: "x-logintoken")
}
request.setValue("Keep-Alive", forHTTPHeaderField: "Connection")
request.setValue("multipart/form-data; boundary="+boundary, forHTTPHeaderField: "Content-Type")
let data = createBodyWithParameters(parameters: requestDictionary, filePathKey:nil, imageDataKey: picData.count > 0 ? picData : [], boundary: boundary)
print(data)
request.httpBody = data
let task = session.dataTask(with: request as URLRequest) { data, response, error in
// handle fundamental network errors (e.g. no connectivity)
guard error == nil && data != nil else {
successHandler(data as AnyObject )//completion(data as AnyObject?, error as NSError?)
print(error)
DispatchQueue.main.async {
Common_Methods.hideHUD(view: (topVC?.view)!)
}
return
}
// check that http status code was 200
if let httpResponse = response as? HTTPURLResponse , httpResponse.statusCode != 200 {
do {
let responseObject = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary
if let responseDictionary = responseObject as? [String:AnyObject]
{
if responseDictionary["statusCode"] as! Int == 401
{
// self.objDelegate.sessionExpire(msgStr: "Session Expired. Please login again to continue.")
}
else
{
//completion(String(data: data!, encoding: String.Encoding.utf8) as AnyObject?, nil)
}
}
} catch let error as NSError {
print(error)
DispatchQueue.main.async {
Common_Methods.hideHUD(view: (topVC?.view)!)
}
// completion(String(data: data!, encoding: String.Encoding.utf8) as AnyObject?, nil)
}
}
// parse the JSON response
do {
DispatchQueue.main.async {
Common_Methods.hideHUD(view: (topVC?.view)!)
}
let responseObject = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary
successHandler(responseObject! )
} catch let error as NSError {
DispatchQueue.main.async {
Common_Methods.hideHUD(view: (topVC?.view)!)
}
// completion(String(data: data!, encoding: String.Encoding.utf8) as AnyObject?, error)
failureHandler(error)
}
}
task.resume()
// return task
}
and function Call is :
WebService.sharedInstance.uploadImage(api: KEditEmployerProfile,token: token,methodType: "PUT", requestDictionary: parameters1 as! [String : AnyObject], picData: [imageData as Data], successHandler: { (responseObject) in
print(responseObject)
}) { (error) in
print(error)
}
}
I have some POST webservices that they have token value in header field
How can I read this value ?
I googled but all answers is just for set value in header field
here is my registration function that I call it in another file
and I want access header in didReciveDataFromRegisterWebService and use token for later webservices
func register(phone : String) {
let configuration = URLSessionConfiguration.default
let manager = AFURLSessionManager(sessionConfiguration: configuration)
manager.responseSerializer = AFHTTPResponseSerializer()
let req = AFHTTPRequestSerializer().request(withMethod: "POST", urlString: "http://192.168.1.228:8000/gcab/v1/driver/register", parameters: nil, error: nil)
req.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
let insideDict = ["phone_number" : phone , "device_id" : DeveloperAssistant.getDeviceID() ]
let insideString = insideDict.convertToString()
let jsonString = "data=\(insideString)"
let jsonPostData = jsonString.data(using: .utf8)
req.httpBody = jsonPostData!
let dataTask = manager.dataTask(with: req as URLRequest) { (response : URLResponse, data : Any?, error : Error?) in
if data != nil {
do{...}
else{
let responseData = WebServiceParser.parseDataToObject(data: dict, type: .register) as! RegisterWebServiceResponse
self.registerDelegate?.didReciveDataFromRegisterWebService!(data: responseData, error: nil, response: nil)
}
print("dict info is : \(dictInfo)")
}catch let erro {
print("erro darim \(erro)")
}
print("we have data ")
}else{
print("we don't have data")
}
}
dataTask.resume()
}
Why you are using AFNetworking? I used this lib a lot in Objective-C but since Swift came out I changed to Alamofire because it is written in Swift and very well maintained.
This could help you (not tested!).
Inside your completion handler:
if let response = dataTask.response as? NSHTTPURLResponse {
if let headerFieldValue = response.allHeaderFields["YOUR_HEADER_FIELD"] as? String {
// do somthing
}
}
Here is one short example of how to access one response headerField with Alamofire.
HTTPURLResponse has a Dictionary property called allHeaderFields from which you can access your token value. Here I cast this to String
Alamofire.request("https://serviceURL.de", method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: nil).responseJSON { (response:DataResponse<Any>) in
if let headerFieldValue = response.response?.allHeaderFields["YOUR_HEADER_FIELD"] as? String {
// do somthing
}
}
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)
}
}