Objective-C Language NSJSONSerialization
Syntax
- (id)JSONObjectWithData:(NSData *)data options:(NSJSONReadingOptions)opt error:(NSError * _Nullable *)error
Parameters
| Operator | Description |
|---|---|
| data | A data object containing JSON data |
| opt | Options for reading the JSON data and creating the Foundation objects. |
| error | If an error occurs, upon return contains an NSError object that describes the problem. |
Remarks
NSJSONSerialization is Available in iOS 5.0 and later An object that may be converted to JSON must have the following properties:
-
The top level object is an NSArray or NSDictionary.
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All objects are instances of NSString, NSNumber, NSArray, NSDictionary, or NSNull.
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All dictionary keys are instances of NSString.
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Numbers are not NaN or infinity.
