Swift not Parsing JSON from PHP Server

Question

I am writing a simple application for iOS in swift that makes an ajax call to a server of mine. Here is the relevant swift code:

class Request : NSObject {
    func send(url: String, f: (NSData)-> ()) {
        var request = NSURLRequest(URL: NSURL(string: url)!)
        var response: NSURLResponse?
        var error: NSErrorPointer = nil
        var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: error)
        //var reply = NSString(data: data!, encoding: NSUTF8StringEncoding)
        f(data!)
    }
}

class myObj: NSObject {

    let baseURL: String
    var message: String

    init() {        
        self.baseURL = XXXXXXXXXXXXX
        self.message = "No Message"
    }

    func check() -> Bool {

        let locationURL = self.baseURL

        self.message = locationURL
        var request = Request()
        request.send(locationURL, f: {(result: NSData)-> () in
            let jsonData: NSData = result
            var error: NSError?

            let jsonDict = NSJSONSerialization.JSONObjectWithData(jsonData, options: nil, error: &error) as! NSDictionary
            self.message = jsonDict["title"] as! String
        })

        return true
    }
}

Here is the server side code that I return dummy JSON with:

<?php
    header('Content-Type: application/json; charset=utf-8');
    if(isset($_GET['location'])) {
        echo json_encode(Array( 'success' => true, 'message' => 'I came from the server.', 'title' => 'tittttt'));
    } else if(isset($_POST['message'])) {
        echo json_encode(Array( 'success' => true, 'message' => 'message received', 'title' => 'ttt'));
    } else {
        echo json_encode(Array( 'success' => false, 'message' => 'invalid params', 'title' => 'title from server'));
    }
?>

When I switch out my URL for a dummy json url (I am using http://jsonplaceholder.typicode.com/posts/1?a=b) it works; when I use my own URL it fails with the following error:

fatal error: unexpectedly found nil while unwrapping an Optional value

What am I doing wrong here?

EDIT: Here is the actual JSON response from the server:

{ success: true, message: "I came from the server.", title: "tit-le" }

On the line: let jsonDict = NSJSONSerialization.JSONObjectWithData(jsonData, options: nil, error: &error) as! NSDictionary — Frank Conry
– Frank Conry, Commented Aug 23, 2015 at 6:55
Your php appears to be returning an array and your swift appears to be forcing it to be a dictionary — Wain
– Wain, Commented Aug 23, 2015 at 7:18
This seems like your PHP response is malformed in some way, although it is not due your use of PHP's array, as that's how PHP handles dictionaries. Frank, can you post a sample response (with redacted/modified data if needed)? — Janum Trivedi
– Janum Trivedi, Commented Aug 23, 2015 at 7:28
header("Access-Control-Allow-Origin: *"); <---- Does your PHP have this? — VBaarathi
– VBaarathi, Commented Aug 23, 2015 at 9:39

VBaarathi · Accepted Answer · 2015-08-23 09:41:09Z

2

Have u tried adding header("Access-Control-Allow-Origin: *"); To your PHP

answered Aug 23, 2015 at 9:41

VBaarathi

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1 Comment

VBaarathi Over a year ago

Wohooo.. OK so just to explain.. This is to allow cross domain connection. Any requests which are not from the same domain are usually blocked. This allows the request to come through.

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