How to make an array of string (String has json data)

Question

I Want to make a string like below

contentlist=["{\"id\":\"id1\"}"]

How can i achieve this ?

I tried with NSString method stringWithFormat:@"contentlist=[\"%@\"] but it has \ character when you copy that string and paste it into textedit or in stickies or anywhere.

if you print this line that it will display like contentlist=["{"id":"id1"}] that i dont want.

Edited :

Here is my code..

NSString *stringUrl = <MY SERVER URL STRING>
NSString *param = [NSString stringWithFormat:@"contentlist=[%c%@%c]",34,header,34];

NSData *postData = [param dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%lu",(unsigned long)[postData length]];

NSError *error;
NSMutableURLRequest *req = [[AFJSONRequestSerializer serializer] requestWithMethod:@"POST" URLString:stringUrl parameters:nil error:&error];
req.timeoutInterval= 40.0;

[req setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[req setValue:postLength forHTTPHeaderField:@"Content-Length"];
[req setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[req setHTTPBody:postData];

And my header value is..

{\"id\":\"21ca7309\",\"indexVersion\":0,\"modified\":1501694202014,\"created\":1501691797232,\"modifiedBy\":\"42bebd87be6ddd4a\",\"name\":\"abcd\"}

How my param value look like in debug mode..

@"contentlist=[\"{\"id\":\"21ca7309\",\"indexVersion\":0,\"modified\":1501694202014,\"created\":1501691797232,\"modifiedBy\":\"42bebd87be6ddd4a\",\"name\":\"abcd\"}\"]

And how I need to pass is like :

contentlist:["{\"id\":\"21ca7309\",\"indexVersion\":0,\"modified\":1501694202014,\"created\":1501691797232,\"modifiedBy\":\"42bebd87be6ddd4a\",\"name\":\"abcd\"}"]

@MikeAlter that is a ascill code equivalent to "...I tried with ascii character also.. you can check in this url theasciicode.com.ar/ascii-printable-characters/… — Apple
– Apple, Commented Aug 3, 2017 at 7:16
You need to pass it in to array ? , then use like NSArray *arr = @[header] , and then try to use dataUsingEncoding on array — Prashant Tukadiya
– Prashant Tukadiya, Commented Aug 3, 2017 at 7:32

Prashant Tukadiya · Accepted Answer · 2017-08-03 06:30:35Z

3

You don't required to use stringWithFormat

as you mentioned you have NSData of JSON if you don't have that then convert it using

NSError *error;
NSData *data =  [NSJSONSerialization dataWithJSONObject:yourJSONO options:NSJSONWritingPrettyPrinted error:&error];

Don't forgot to check error before use :)

you can easily get string from that with below code

NSString *str = [[NSstring alloc] initWithData:data encoding:NSUTF8StringEncoding]

answered Aug 3, 2017 at 6:30

Prashant Tukadiya

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