Convert an iOS objective c object to a JSON string

Question

I have an objective C class like,

@interface message : NSObject {
 NSString *from;
 NSString *date;
 NSString *msg;
}

I have an NSMutableAr

Answer 1

Now you can solve this problem easily using JSONModel. JSONModel is a library that generically serialize/deserialize your object based on Class. You can even use non-nsobject based for property like int, short and float. It can also cater nested-complex JSON. It handles error checking for you.

Deserialize example. in header file:

#import "JSONModel.h"

@interface Message : JSONModel 
@property (nonatomic, strong) NSString* from;
@property (nonatomic, strong) NSString* date;
@property (nonatomic, strong) NSString* message;
@end

in implementation file:

#import "JSONModelLib.h"
#import "yourPersonClass.h"

NSString *responseJSON = /*from somewhere*/;
Message *message = [[Message alloc] initWithString:responseJSON error:&err];
if (!err)
{
   NSLog(@"%@  %@  %@", message.from, message.date, message.message):
}

Serialize Example. In implementation file:

#import "JSONModelLib.h"
#import "yourPersonClass.h"

Message *message = [[Message alloc] init];
message.from = @"JSON beast";
message.date = @"2012";
message.message = @"This is the best method available so far";

NSLog(@"%@", [person toJSONString]);