How to convert json string to nsdictionary on json parser framework on objective c

Question

I am trying to convert raw json string to NSDictionary. but on NSDictionary i got different order of objects as on json string but i need exactly same order in NSDictionary as on json string. following is code i have used to convert json string

 SBJSON *objJson = [[SBJSON alloc] init];
 NSError *error = nil;
 NSDictionary *dictResults = [objJson objectWithString:jsonString error:&error];

score 1 · Accepted Answer · edited May 23 '17 at 12:27

1

From NSDictionary's class reference:

The order of the keys is not defined.

So, basically you can't do this when using a standard NSDictionary.

However, this may be a good reason for subclassing NSDictionary itself. See this question about the details.

edited May 23 '17 at 12:27

Community

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1

answered Aug 08 '12 at 10:18

score 0 · Answer 2 · edited Jan 09 '13 at 06:10

0

//parse out the json data
    NSError* error;


NSDictionary* json = [NSJSONSerialization 
        JSONObjectWithData:responseData //1

        options:kNilOptions 
        error:&error];

    NSArray* latestLoans = [json objectForKey:@"loans"]; //2

    NSLog(@"loans: %@", latestLoans); //3

Source: Follow this link http://www.raywenderlich.com/5492/working-with-json-in-ios-5 Good tutorial but works only on iOS5

edited Jan 09 '13 at 06:10

prashant

1,920
14
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answered Aug 08 '12 at 10:17

user431791

341
2
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but this doesn't **at all** answers OP's question. – Aug 08 '12 at 10:18
NSDictionary order is not guaranteed at all. check apple documentation. You have to sort order by your self. – user431791 Aug 08 '12 at 10:22
but this still doesn't answer the question. – Aug 08 '12 at 10:24
then i really don't understand what question is, elaborate more. – user431791 Aug 08 '12 at 10:26

score 0 · Answer 3 · answered Aug 08 '12 at 10:19

NSDictionary is an associative array and does not preserve order of it's elements. If you know all your keys, then you can create some array, that holds all keys in correct order (you can also pass it with your JSON as an additional parameter). Example:

NSArray* ordered_keys = [NSArray arrayWithObjects: @"key1", @"key2", @"key3", .., nil];

for(NSString* key is ordered_keys) {
    NSLog(@"%@", [json_dict valueForKey: key]);
}

How to convert json string to nsdictionary on json parser framework on objective c

3 Answers3