How to convert a Json String into a NSArray?

Question

I am currently trying to convert the JSON Representation of some Objects into an NSArray. I used RestKit to get the Response through our API and now I want to convert the RKResponse into an Array of Objects. How can I do this ?

Solution 1

 NSData* data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
    NSArray *values = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];  // if you are expecting  the JSON string to be in form of array else use NSDictionary instead

The above code works good for iOS 5 and above

Solution 2

Try importing RestKit/RKJSONParserJSONKit.h. Then use try the method objectFromString:error:. To get a NSDictionary representation. From the NSDictionary you can get the array.

Comments

[Sebastian Boldt]

Ok maybe i should describe my problem a little bit more detailed. I got an Array of Json Objects in form of a RKRESPONSE and now i want to convert it into an Array with real Objective -C Objects with propertys and so one ...

[AppleDelegate]

What is the dataType of RKRESPONSE.Is it NSDATA or some other??

[Sebastian Boldt]

RKRESPONSE is defined inside the RestKit Headers. It has its own Type.

[Sebastian Boldt]

I can convert it to a string like the following : NSData *tempWishes = [[response bodyAsString]dataUsingEncoding:NSUTF8StringEncoding];

[AppleDelegate]

so just use bypass the first line of my answer and subject tempWishes instead of 'data' for JSONSerialization.The output should be an array

[AppleDelegate]

is it an array of NSDictionaries??

[ashokdy]

Thank it worked for me and saved my time, so one up

[Jonathan F.]

Works fine, and pretty simple.