1

以 .m 为单位:

   @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,我在控制台( 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;
    }
)

我不能用这个。

如果我在 Safari 中打开此网址:

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

所以我的json错了,在xcode中

我该怎么办?

4

1 回答 1

6

您在日志输出中看到的只是对象集合的格式,NSArrayNSDictionary不是实际的 JSON 本身。[在源 JSON中有 a并且(在日志语句中有 a 的地方,你有一个数组;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];
于 2013-04-18T20:38:41.273 回答