Parsing JSON on iOS in Objective-C
Objective-C's class libraries define the NSJSONSerialization
class, which can serialize to and from JSON. It converts JSON to NSDictionary
objects of values, with the keys, the names of the slots in the JSON, and the values of their JSON. It's available in iOS 5.0 and later.
How to do it…
Here's a simple example:
NSError* error; NSDictionary* data = [ NSJSONSerialization JSONObjectWithData: json options: kNilOptions error: &error ]; NSString* call = [ data ObjectForKey: @"call" ];
How it works…
The NSJSONSerialization
class has a method, JSONObjectWithData:options:error
, that takes an NSString
, parsing options, and a place to record errors, and performs JSON parsing. It can accept JSON whose top level is an array ...
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