我尝试在 iOS5 中使用内置的 JSON 框架,但在尝试编译此代码时遇到 ARC 问题:
Im trying to use the built in JSON framework in iOS5, but i get an ARC issue when trying to compile this code:
NSDictionary *results = [jsonString JSONValue];
在 iOS5 中是否有类似的方法可以做到这一点,不会引发 ARC 问题?
Is there an equivalent way to do this in iOS5, that doesn't raise an ARC issue?
ARC 问题是:NSString"没有可见的@interface 声明选择器JSONValue"
你得到的消息的意思是NSString中没有声明方法JSONValue"(这绝对是真的).为了使用内置的 JSON 序列化器,试试这个:
The message you get means 'There is no method JSONValue declared in NSString' (which is absolutely true). In order to use the built in JSON serializer try this one:
NSError *error;
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *results = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];
Ps 有关选项,请参阅 上的文档NSJSONSerialization 类.另请注意,结果也可以是 NSArray.
Ps For options see the documentation on NSJSONSerialization class. Also note that results can be an NSArray as well.
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