For simple JSON parsing, SBJSON or something like that will suffice. Of course, the best way is to use NSJSONSerialization. After all, it is the solution that comes with the native SDK, so the efficiency will definitely not be bad. If the request is to return an API in JSON format, AFNetworking 2 already comes with AFJSONResponseSerializer, which will directly convert the response message into an NSDictionary object.
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For simple JSON parsing, SBJSON or something like that will suffice. Of course, the best way is to use NSJSONSerialization. After all, it is the solution that comes with the native SDK, so the efficiency will definitely not be bad. If the request is to return an API in JSON format, AFNetworking 2 already comes with AFJSONResponseSerializer, which will directly convert the response message into an NSDictionary object.
AFNetworking
If you just want to parse JSON, there are several third-party frameworks below
1. TouchJSON
2. SBJSON
3.YAJL
4.JSONKit
5. NextiveJson
Actually, I think the built-in API NSJSONSerialization is very good