HTTP POST request in Swift

Question

How do I post the request on iOS? Actually when I logged into Facebook it fetches the user informations like username, from where there are login (latitude, longitude). Is it possible to use api Link: http://buddysin.aumkiiyo.com/fbc

My code is:

@IBAction func btnAPI(sender: UIButton)
{
    //startConnection()
    connectToWebAPI()
}
func connectToWebAPI()
{ 
    //setting up the base64-encoded credentials
    let id = "1620912344817986"
    //let password = "pass"
    let loginString = NSString(format: "%@:%@", id)
    let loginData: NSData = loginString.dataUsingEncoding(NSUTF8StringEncoding)!
    let base64LoginString = loginData.base64EncodedStringWithOptions(nil)

    //creating the requestz
    let url = NSURL(string: "http://buddysin.aumkiiyo.com/fbc")
    var request = NSMutableURLRequest(URL: url!)
    let config = NSURLSessionConfiguration.defaultSessionConfiguration()
    let session = NSURLSession.sharedSession()
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")

    let urlConnection = NSURLConnection(request: request, delegate: self)
    request.HTTPMethod = "POST"
    request.setValue(base64LoginString, forHTTPHeaderField: "Authorization")

    let task = session.dataTaskWithURL(url!, completionHandler: {data, response, error -> Void in
        if (error != nil) {
            println(error)
        }
        else {
            // converting the data into Dictionary
            var error: NSError?
            let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &error) as! NSDictionary

            println(jsonResult)
        }
    })

    //fire off the request  

    task.resume()
}

while I run, the fatal error where displayed as

`fatal error: unexpectedly found nil while unwrapping an Optional value`

in the "jsonResult"

let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &error) as! NSDictionary — Mahalakshmi.J, Aug 20 '15 at 13:04
try `if let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &error) as?NSDictionary{ println(jsonResult) }` — Bhavin Bhadani, Aug 20 '15 at 13:04
when i changed the code no error where displayed it shows "nil" — Mahalakshmi.J, Aug 20 '15 at 13:08
In my o/p it shows: Optional({ share = { message = " API AUTH FaileD"; status = "-1"; }; }) — Mahalakshmi.J, Aug 20 '15 at 13:15

score 0 · Answer 1 · answered Aug 20 '15 at 13:03

0

i think it is better to use Alomafire. As AFNetWorking in Objective-C it is a library which simplified a lot http request.

answered Aug 20 '15 at 13:03

Pred05

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1
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13

what i should do after i download the alomafire – Mahalakshmi.J Aug 20 '15 at 13:10
When you have added Alomafire in your XCode Project. You can find some example in the github. For example an example to make a http.post : [link](https://github.com/Alamofire/Alamofire#post-request-with-url-encoded-parameters) – Pred05 Aug 20 '15 at 13:44

William Hu · Answer 2 · 2015-08-22T00:50:18.850

0

You should find which varible due to this error: for example data,

if let dataTemp = data as? NSDictionary {
}

FYI: Here is a way of 'POST' method of AFNetworking in swift, below code should be in your connectToWebAPI method, wrap your url ready into NSURL.

let manager = AFHTTPRequestOperationManager(baseURL: NSURL(string: yourURL))
manager.POST("path", parameters: ["key":value], success: { (opeartion:AFHTTPRequestOperation!, data:AnyObject!) -> Void in
        },failure: { (operation:AFHTTPRequestOperation!, error:NSError!) -> Void in

    })

Tutorial to install AFNetworking. https://github.com/AFNetworking/AFNetworking/wiki/Getting-Started-with-AFNetworking

edited Aug 22 '15 at 00:50

answered Aug 20 '15 at 13:04

William Hu

15,423
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so i should have to change the code completely write!! and where do i have to paste this code.. i have no idea about this code. – Mahalakshmi.J Aug 20 '15 at 13:16
if i implement this code in my connectToWebAPI() its shows some error like /* Use of Unresolved AFHTTPRequestOperationManager */ , /* Use of declared type AFHTTPRequestOperation */ . how should i resolve the errors. – Mahalakshmi.J Aug 21 '15 at 05:53
Oh, suggest to use *AFNetworking* for http/https on IOS development. Nearly no app with interact with backend/API won't use it. – William Hu Aug 22 '15 at 00:48

score 0 · Answer 3 · edited May 23 '17 at 10:27

0

Visit this question to check for my post-request function (if
you don't want to use Alamofire for any reasons)
Visit this question to check for steps you need to do if you want to add Alamofire to your XCode-project
If you need to get json-data from your server, use
SwiftyJSON. It's as simple as dragging SwiftyJSON.swift into your project with checking "Copy items if needed" and using like

let jsonData = JSON(data: yourDataFromServer)

Also you can view this question to check out for steps to encode json-post data to send it to server.

Hope I helped :)

edited May 23 '17 at 10:27

Community

1
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answered Aug 20 '15 at 13:22

SwiftStudier

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where i should create the PHP file, if i'm not using alamofire @SwiftStudier – Mahalakshmi.J Aug 21 '15 at 05:49
You don't have to. It was just example – SwiftStudier Aug 21 '15 at 06:49
I answered on your question. Your service auth problems does not conform this topic, it's your own – SwiftStudier Aug 21 '15 at 10:10
okay how should i display the logged user details please tell .. actually in that example they predefined set the values but i want to get and display the details while run time from the server is it possible?? – Mahalakshmi.J Aug 21 '15 at 10:20
your question is about HTTP POST request in swift, isn't it? – SwiftStudier Aug 21 '15 at 10:21
so user details displaying is another. feel it – SwiftStudier Aug 21 '15 at 10:27
actually i'm in learning stage of swift, okay thanks for ur guidance – Mahalakshmi.J Aug 21 '15 at 10:32
you should accept right answer on this topic question and ask another if you need any help. – SwiftStudier Aug 21 '15 at 10:33

score 0 · Answer 4 · edited Sep 11 '19 at 14:06

It is quite easy to do with Alamofire

  func postSomething(completionHandler: @escaping CompletionHandler){
    let loginString = NSString(format: "%@:%@", id)
    let loginData: NSData = loginString.dataUsingEncoding(NSUTF8StringEncoding)!
    let base64LoginString = loginData.base64EncodedStringWithOptions(nil)

    let headers: HTTPHeaders = [
        "Content-Type": "application/json",
        "Accept": "application/json",
        "Authorization": "base64LoginString",
    ]

    let parameters: Parameters = [
        "parameter": value,
        "parameter2": value2
    ]

    Alamofire.request("http://buddysin.aumkiiyo.com/fbc", method: .post, parameters: parameters, encoding: URLEncoding.default, headers: SFAppServicesManager.sharedInstance.genericHeader()).responseJSON { response in
        if let JSON = response.result.value {
            let userDictionary = JSON as! NSDictionary
            completionHandler(true)
        } else {
            completionHandler(false)
        }
    }
}

HTTP POST request in Swift

4 Answers4