Getting NULL value parsing JSON string

Question

I have this JSON data:

 {
    "data":{
        "mat_149":{
            "id":"149",
            "title":"The closing of 40% profit within 9 month",
            "teaser":"profit within 9 months only which is equal to 52% annual profit",
            "body":" The auction was presented in a very high and commercial lands.\u000d\u000a",
            "files":{
                "911":{
                    "fid":"911",
                    "filename":"22.JPG",
                    "filepath":"http://mysite/files/22_0.JPG"
                }
            }
        },
        "mat_147":{
            "id":"147",
            "title":"Company launches the city ",
            "teaser":"demands for distinguished lands.",
            "body":" The area size is quare meters This is evident through projects and many other projects.\u000d\u000a\u000d\u000a",
            "files":{
                "906":{
                    "fid":"906",
                    "filename":"2D7z.jpg",
                    "filepath":"http://mysite/dlr/files/2D7Z.jpg"
                }
            }
        },
        "mat_link":"mysite.com/"
    }
}

I'm parsing it like this with the json-framework:

NSString *response = [[NSString alloc] initWithData:receivedData encoding:NSASCIIStringEncoding] ;
SBJSON *parser = [[SBJSON alloc] init];  
NSDictionary *data = (NSDictionary *) [parser objectWithString:response error:nil];  
NSLog(@"Data : %@", [data valueForKey:@"data"] );

I am getting NULL:

[2599:207] Data : (null)

Can someone point out what I'm doing wrong/how I can fix this?

Are you sure that receivedData is valid?...and what about NSLog(@"%@",data);?...and maybe the problem is that you have to use SBJsonParser instead SBJSON, have you try this? — Mat
– Mat, Commented Jul 16, 2011 at 8:53
yes m very sure that its valid n m getting the full feed in the console window of xcode.... I also want to get the 'file' items .... please help me .... — qwerty
– qwerty, Commented Jul 16, 2011 at 8:59
what i should do to get the file items . Please help me .... — qwerty
– qwerty, Commented Jul 16, 2011 at 9:02

Vijay-Apple-Dev.blogspot.com · Accepted Answer · 2011-07-16 11:06:25Z

2

try this one

   NSLog(@"Data : %@", [data objectForKey:@"data"] );

more over

  SBJSON *parser = [[[SBJSON alloc] init] autorelease];//should be release

For his modified questions

    for (NSMutableArray *arr in [data objectForKey:@"data"] ) {



        for (NSMutableArray *arr1 in [arr objectForKey:@"files"]) {


            for (NSMutableArray *arr2 in arr1) {




                NSLog(@"fid : %@ \n\n",[arr2 valueForKey:@"fid"]);

                NSLog(@"filename : %@ \n\n",[arr2 valueForKey:@"filename"]);

                NSLog(@"filepath : %@ \n\n",[arr2 valueForKey:@"filepath"]);


            }


        }


    }

edited Jul 16, 2011 at 11:06

answered Jul 16, 2011 at 8:59

Vijay-Apple-Dev.blogspot.com

25.7k7 gold badges69 silver badges76 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

qwerty Over a year ago

M getting the data items , but what i should do to get the 'file' items like 'fid' , 'filname' , 'filepath' .......

qwerty Over a year ago

how can i get each elements from 'Data' n 'files' and store into some NSStrings ........

Vijay-Apple-Dev.blogspot.com Over a year ago

NSLog(@"file is : %@", [[[[data objectForKey:@"data"] objectForKey:@"mat_157"] objectForKey:@"files"] objectForKey:@"311"] );

qwerty Over a year ago

Alabdulkarim[5046:207] -[NSCFString objectForKey:]: unrecognized selector sent to instance 0x7834a40 2011-07-16 14:28:08.923 Ala[5046:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString objectForKey:]: unrecognized selector sent to instance 0x7834a40'

Collectives™ on Stack Overflow

Getting NULL value parsing JSON string

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related