How to parse JSON using AFNetworking in iOS?

Question

I am using AFNetworking framework in my app, I am able to make HTTP request and able to get response from server but i am not able to parse the JSON.

The following is my code:

I have created a singleton class called WebServices and have created a method, which makes HTTP request.

+(void)getCompaniesc:(NSString *)companyID onSucess:(PSACompletionBlock2)onSucess
{
    NSDictionary *params = @{@"companyId": companyID};

    [[[WebServices sharedInstance] operationQueue] cancelAllOperations];

    [[WebServices sharedInstance] postPath:@"GetCompany?" parameters:params success:^(AFHTTPRequestOperation *operation, id response)
     {
         NSString *st = [NSString stringWithFormat:@"%@",response];
         NSLog(@"st=%@",st);

         if (onSucess)
         {
             onSucess(YES, response);
         }


     }failure:^(AFHTTPRequestOperation *operation, NSError *error){

         NSLog(@"%s: AFHTTPRequestOperation error: %@", __FUNCTION__, error);
     }];
}

and from my ViewController I am calling the above function using the following code:

[WebServicesClass getCompaniesc:companyID onSucess:^(BOOL success, id jsonresponse) {

}];

I'm getting the response from the server which is type id.

And the following is my response from Server:

[{"ExistsInDB":"False","CanSave":"True","EntityName":"ACCOUNT","TypeDescription":"Company","TypePluralDescription":"Companies","RequiredProperties":"Chiever.Data.SAQueryFieldSet","MetaData":"","ReadOnly":"False","ACCTNAME":"","AREA_ID": "","ACCT_TYPE_ID":"","ADDR1":"","ADDR2":"","ADDR3":"","TOWN”:””,”COUNTY":"","POSTCODE":"","COUNTRY":"","TEL":"","FAX":"","EMAILORWEB":"","BUYGRP_ID": "","STATUS":"","SIC_CODE_ID”:””,”CURRENCY_ID":"","CALL_FREQ": "0","DORMANT":"False","CREATOR_ID": "","CREATED_ON":"01/01/0001 00:00:00","LAST_EDITOR_ID":"","LAST_EDITED":"01/01/0001 00:00:00","LAST_ACTION_BY":"","LAST_ACTION":"01/01/0001 00:00:00","NEXT_ACTION_BY":"","NEXT_ACTION":"01/01/0001 00:00:00","LOCALE_ID":"","BusinessUnits": "System.Collections.Generic.List`1[chiever.Platform.LookupIdValuePair]","ACCT_ID":"0000000320"}]

Can any one help me out with this?

Please format your code. Do you get an error / exception? Does the server return correct headers? Have you told AFNetworking to expect JSON? — Wain
– Wain, Commented Feb 11, 2014 at 12:05
i have set the headers: [AFJSONRequestOperation addAcceptableContentTypes:[NSSet setWithObject:@"application/json"]]; — Nilesh .S. Joshi
– Nilesh .S. Joshi, Commented Feb 11, 2014 at 12:32
So how are you "not able to parse" the JSON? Have you tried using a JSON parser?? — Hot Licks
– Hot Licks, Commented Feb 11, 2014 at 13:06

Salmo · Accepted Answer · 2014-02-11 13:17:38Z

1

Just do this check:

NSDictionary *dic = [NSJSONSerialization JSONObjectWithData: jsonresponse options:NSJSONReadingMutableContainers error:&error];

if your return is an array, use this:

NSArray *arr = [NSJSONSerialization JSONObjectWithData: jsonresponse options:NSJSONReadingMutableContainers error:&error];

edited Feb 11, 2014 at 13:17

answered Feb 11, 2014 at 12:34

Salmo

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6 Comments

Salmo Over a year ago

Sorry @Nilesh.S.Joshi, I fix my answer. Please, try again!!

Nilesh .S. Joshi Over a year ago

m getting null as NSDictionary

Hot Licks Over a year ago

The outermost layer of the JSON is an array (not that that would cause a null return value). @Nilesh.S.Joshi - What is the return value in error?

Nilesh .S. Joshi Over a year ago

by using this NSDictionary* json=(NSDictionary*)response; i am getting the data in NSDictionary* json. in this format: <227b5c72 5c6e2020 5c224578 69737473 496e4442 5c223a20 5c224661 6c73655c 222c5c72 5c6e2020 5c224361 6e536176 655c223a 205c2254 7275655c>

Hot Licks Over a year ago

@Nilesh.S.Joshi - That appears to be an NSData object. It would need to be parsed with NSJSONSerialization to obtain the NSArray containing the JSON data.

|

Mustafa · Accepted Answer · 2014-03-01 07:06:36Z

A.) If you're using AFHTTPRequestOperation make sure you're setting the responseSerializer:

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
operation.responseSerializer = [AFJSONParserResponseSerializer serializer];

Also, make sure that you're setting request "Content-Type" to be "text/json". Now, if you're getting JSON response from the server, then you probably should get a dictionary responseObject.

B.) If you're still getting an NSData, you can convert the NSData to NSString to see/debug what you're getting from the server:

NSString *stringResponse = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; // Use appropriate encoding
NSLog(@"String Response: %@", stringResponse);

C.) If you're sure that you're getting json response from the server, you can always convert the raw NSData response to NSDictionary using json serialization:

id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSLog(@"JSON: %@", json);

Hope this helps.

Ramon · Accepted Answer · 2014-02-11 12:23:47Z

0

If your server returns the "Content-Type: application/json" header, you will get a NSDictionary with the json response from AFNetworking. Or in your case, a NSArray with NSDictionaries included.

In PHP, the headers can be modified by adding

header('Content-Type: application/json');

to the top of your script.

answered Feb 11, 2014 at 12:23

Ramon

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