IOS/Objective-C:如何访问括号内的JSON

JSON spec .

可以访问括号内API的以下JSON响应中的临时值,如下所示:

JSON:
main =     {
        humidity = 25;
        pressure = 1013;
        temp = "79.7";
        "temp_max" = "91.04000000000001";
        "temp_min" = "66.92";
    };

NSNumber *temp = jsonResults[@"main"][@"temp"]; //returns the temp

weather =     (
                {
            description = "clear sky";
            icon = 01d;
            id = 800;
            main = Clear;
        }
    );

我试过的都没用。提前谢谢你的建议。