Question

in .m：

   @implementation ViewController
    {
    NSDictionary *_json;
}

- (void)viewDidLoad
{
    [super viewDidLoad];


    NSURL* url = [NSURL URLWithString:@"http://api.worldweatheronline.com/free/v1/weather.ashx?q=Si%C3%B3fok&format=json&num_of_days=5&key=mykey"];

    NSData *jsonData = [NSData dataWithContentsOfURL:url];

    NSError *error;
    _json = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];

    NSDictionary* fullDictFromjson = _json[@"data"];

    NSLog(@"%@",fullDictFromjson);

    NSDictionary* currentCondition = fullDictFromjson[@"current_condition"];

    NSLog(@"%@",currentCondition);

在此之后我在Console（currentCondition）中得到了这个：

2013-04-18 22:18:16.758 weather[18111:c07] (
        {
        cloudcover = 0;
        humidity = 74;
        "observation_time" = "08:18 PM";
        precipMM = "0.0";
        pressure = 1019;
        "temp_C" = 11;
        "temp_F" = 51;
        visibility = 10;
        weatherCode = 113;
        weatherDesc =         (
                        {
                value = Clear;
            }
        );
        weatherIconUrl =         (
                        {
                value = "http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0008_clear_sky_night.png";
            }
        );
        winddir16Point = S;
        winddirDegree = 170;
        windspeedKmph = 5;
        windspeedMiles = 3;
    }
)

我无法解决这个问题。

如果我在safari中打开此网址：

“current_condition”：[{“cloudcover”：“0”，.....所以有“[”不是“（”

所以我的json错了，在xcode中

我该怎么办？

Answer 1

您在日志输出中看到的只是NSArray和NSDictionary对象集合的格式，而不是实际的JSON本身。如果源JSON中有[而日志语句中有(，则表示您有一个数组;哪里有{你有一本字典。

因此，您需要先从单元素数组中提取字典，然后才能使用它：

NSDictionary* currentCondition = fullDictFromjson[@"current_condition"][0];

JSON带“（”“）”括号而不是“[”“]”

1 个答案: