JSONValue ARC 问题

JSONValue ARC issue(JSONValue ARC 问题)
本文介绍了JSONValue ARC 问题的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

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"

推荐答案

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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