Create JSON format using NSString as a key and values

Question

I have JSON format requirement something like this.

{ 
"first_name" : "XYZ", 
"last_name" : "ABC" 
}

I have values in NSString.

NSString strFName = @"XYZ"; 
NSString strLName = @"ABC";
NSString strKeyFN = @"first_name";
NSString strKeyLN = @"last_name";

And I use NSMutableDictionary

NSMutableDictionary* dict = [[NSMutableDictionary alloc]init];
[dict setObject:strFName forKey:strKeyFN];
[dict setObject:strLName forKey:strKeyLN];

then output is

{
first_name = XYZ,
last_name = ABC
}

So I don't want "=" separating key & values instead I want ":" to separate key and values

I have went most of the stack overflow questions but didn't help getting "=" only in output

So please any help ?

stackoverflow.com/questions/12299965/…

Bhavin Bhadani
– Bhavin Bhadani

2016-04-27 11:19:10 +00:00
Commented Apr 27, 2016 at 11:19 — Bhavin Bhadani
– Bhavin Bhadani, Commented Apr 27, 2016 at 11:19

iVarun · Accepted Answer · 2016-04-27 12:12:15Z

1

Here is your answer :

NSString *strFName = @"XYZ";
NSString *strLName = @"ABC";
NSInteger number = 15;

NSString *strKeyFN = @"first_name";
NSString *strKeyLN = @"last_name";
NSString *numValue = @"Number";

NSMutableDictionary *dic = [[NSMutableDictionary alloc]init];

[dic setObject:strFName forKey:strKeyFN];
[dic setObject:strLName forKey:strKeyLN];
[dic setObject:[NSNumber numberWithInt:number] forKey:numValue];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:[NSArray arrayWithObject:dic] options:NSJSONWritingPrettyPrinted error:nil];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(@"JSON  %@",jsonString);

edited Apr 27, 2016 at 12:12

answered Apr 27, 2016 at 11:26

iVarun

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2 Comments

Ganesh Over a year ago

@ivaran thank you but If I want to skip number from double quotes means what I have to do ?

Ganesh Over a year ago

Yes that is really useful ! Thank you very much!

Chirag Sondagar · Accepted Answer · 2016-04-27 11:23:21Z

0

You write this code after your NSDictionary

NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
    NSString *jsonstr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];

answered Apr 27, 2016 at 11:23

Chirag Sondagar

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1 Comment

Ganesh Over a year ago

Yes that is really helpfull but it is adding double quotes to number too, so I don't want double quotes for it, than what I have to do ? something like this { "Number" : 7 }

Himanshu padia · Accepted Answer · 2016-04-27 11:29:50Z

0

NSString *strFName = @"XYZ";
NSString *strLName = @"ABC";
NSString *strKeyFN = @"first_name";
NSString *strKeyLN = @"last_name";
NSDictionary *ictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                      strKeyFN, strFName,strKeyLN, strLName,nil];

NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionary options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(@"dictionary as string:%@", jsonString);

answered Apr 27, 2016 at 11:29

Himanshu padia

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Comments

Abhinandan Pratap · Accepted Answer · 2016-04-27 11:53:05Z

0

NSString *strFName = @"ABC";
NSString *strLName = @"XYZ";

NSString *strKeyFN = @"last_name";
NSString *strKeyLN = @"first_name";

NSMutableDictionary *dict = [[NSMutableDictionary alloc]init];

[dict setObject:strFName forKey:strKeyFN];
[dict setObject:strLName forKey:strKeyLN];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:[NSArray arrayWithObject:dict] options:NSJSONWritingPrettyPrinted error:nil];
NSString *jsonStrng = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(@"Your required JSON is %@",jsonStrng);

answered Apr 27, 2016 at 11:53

Abhinandan Pratap

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Comments

score 0 · Accepted Answer · 2016-04-27 11:54:29Z

0

try this:-

NSString *cleanedString1 =[strFName stringByReplacingOccurrencesOfString:@"/"" withString:@""];
NSString *cleanedString2 =[strLName stringByReplacingOccurrencesOfString:@"/"" withString:@""];

NSDictionary *Dict = [NSDictionary dictionaryWithObjectsAndKeys:
                                cleanedString1, strKeyFN,
                                cleanedString2, strKeyLN,nil];

NSData *jsonData2 = [NSJSONSerialization dataWithJSONObject:Dict options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData2 encoding:NSUTF8StringEncoding];
NSLog(@"jsonData as string:\n%@", jsonString);

edited Apr 27, 2016 at 11:54

answered Apr 27, 2016 at 11:25

user5917312

2 Comments

Ganesh Over a year ago

Yes that is really helpfull thank you, but it is adding double quotes to number too, so I don't want double quotes for it, than what I have to do ? something like this { "Number" : 7 }

user5917312 Over a year ago

if you are not getting see this example stackoverflow.com/questions/26817932/…

Jamil · Accepted Answer · 2016-04-27 12:23:25Z

0

this very robust code to achieve you goal

 NSDictionary *userDic = @{strKeyFN:strFName,strKeyLN:strLName};

answered Apr 27, 2016 at 12:23

Jamil

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Comments

balkaran singh · Accepted Answer · 2016-04-27 13:05:13Z

0

you have to convert NSMutableDictionary into NSData

then convert the NSData Into json string you want

NSString *strFName = @"XYZ";
 NSString *strLName = @"ABC";
 NSString *strKeyFN = @"first_name";
 NSString *strKeyLN = @"last_name";
 NSMutableDictionary* dict = [[NSMutableDictionary alloc]init];
 [dict setObject:strFName forKey:strKeyFN];
 [dict setObject:strLName forKey:strKeyLN];

NSData *data = [NSJSONSerialization dataWithJSONObject:dict    options:NSJSONWritingPrettyPrinted error:nil];

NSString *jasonString= [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];

edited Apr 27, 2016 at 13:05

user5917312

answered Apr 27, 2016 at 11:31

balkaran singh

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2 Comments

Ganesh Over a year ago

Yes that is really helpfull but lets say I have number and I don't want double quotes for it, than what I can do ?

balkaran singh Over a year ago

in NSDictionary key is always String But its value can be number or string . if you use value as number you not get double quotes

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