Difficult to handling json formatting in Objective c

Question

I need convert json string from this array

Actually i need output like {"custom":{"1":"3","8":"21"}} but i got "{\n \"custom\" : \"[\\n {\\n \\\"1\\\" : \\\"4\\\"\\n },\\n {\\n \\\"8\\\" : \\\"20\\\"\\n }\\n]\"\n}"

here is my code

NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:mydict options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

is there any way to get output like this : {"custom":{"1":"3","8":"21"}}

clemens · Accepted Answer · 2017-07-20 05:43:36Z

3

Just replace NSJSONWritingPrettyPrinted with 0.

answered Jul 20, 2017 at 5:43

clemens

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2 Comments

Subramani Over a year ago

Thank you now i got [{"1":"4"},{"8":"20"}] . can you help with how to make like this {"7":"8","8":"5"}

CRD Over a year ago

@Subramani - you have an array of dictionaries, if you want to output a single JSON dictionary the produce a single dictionary from your array before doing the JSON conversion.

Radwan Diab · Accepted Answer · 2017-07-20 05:50:15Z

0

try removing the NSJSONWritingPrettyPrinted option like this :

NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:mydict options:0 error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

According to the documentation NSJSONWritingPrettyPrintedadds whitespace to make the output readable , removing that option gives the most compact JSON possible . More here

answered Jul 20, 2017 at 5:50

Radwan Diab

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1 Comment

Subramani Over a year ago

Thank you and i already done this is there any way to make like this {"7":"8","8":"5"} from [{"1":"4"},{"8":"20"}]

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