CODEWITHSUNDEEP
objective-c
Lahib
Lahib

Reputation: 1365

How to send JSON request to service with parameters in Objective-C

I'm creating a iPhone app, and im trying to figure out how to create a JSON request to the webservice that contains parameters. In Java this would look like this

HashMap<String, String> headers = new HashMap<String, String>();

JSONObject json = new JSONObject();

            json.put("nid", null);
            json.put("vocab", null);
            json.put("inturl", testoverview);
            json.put("mail", username); // [email protected]
            json.put("md5pw", password); // donkeykong

        headers.put("X-FBR-App", json.toString());

The header has to contain a JSON object and "X-FBR-App" before the service recognizes the request. How would this be implemented in Objective-C ?

Upvotes: 0

Views: 5194

Answers (2)

Peter M
Peter M

Reputation: 7513

JSON isn't baked into iOS, but if you look at www.JSON.org there are a number of Objective-C frameworks that provide the required functionality. I have no experience with any of them so I can't make recommendations, but it is a good start to finding a solution.

Also look at this SO question post-data-through-json-webservices-in-iphone

Upvotes: 1

iOS Developer
iOS Developer

Reputation: 1723

USE Post method.try this 

    NSString *method =  @"addProduct"; 
 NSString *jsonstring=@"http://yourdomain.com/product_review_api/product-review.php?"; 
 NSString *urlString = [NSString stringWithFormat:@"%@",jsonstring];
 NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
 [request setURL:[NSURL URLWithString:urlString]];
 [request setHTTPMethod:@"POST"]; 
  NSMutableData *body = [NSMutableData data];
    // image file
   NSData *imageData = UIImageJPEGRepresentation( labelimage, 0.8);
   NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

      //  parameter method
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"method\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[method dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

   //  parameter categoryid
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"category_id\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[selectedID dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPBody:body];

    // now lets make the connection to the web
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

    NSLog(@"%@",returnString);
    NSDictionary *profile = (NSDictionary*)[returnString JSONValue];
    NSLog(@"profile=%@", profile);

you can append all the parameters like this.

Upvotes: 1

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