雅虎天气api解析
问题描述：
如何解析我从链接 http://weather.yahooapis.com/forecastjson?w=2502265收到的以下JSON。我从中得到一个垃圾值，但正确地获取其余的值。任何人都可以让我知道我怎样才能从中获得风速？雅虎天气api解析
{"units":{"temperature":"F","speed":"mph","distance":"mi","pressure":"in"},"location":{"location_id":"USCA1116","city":"Sunnyvale","state_abbreviation":"CA","country_abbreviation":"US","elevation":82,"latitude":37.39,"longitude":-122.03},"wind":{"speed":0,"direction":"CALM"},"atmosphere":{"humidity":"86","visibility":"10","pressure":"30.21","rising":"falling"},"url":"http:\/\/weather.yahoo.com\/forecast\/USCA1116.html","logo":"http:\/\/l.yimg.com\/a\/i\/us\/nt\/ma\/ma_nws-we_1.gif","astronomy":{"sunrise":"06:27","sunset":"18:11"},"condition":{"text":"Fair","code":"33","image":"http:\/\/l.yimg.com\/a\/i\/us\/we\/52\/33.gif","temperature":49},"forecast":[{"day":"Today","condition":"PM Showers","high_temperature":"64","low_temperature":"47"},{"day":"Tomorrow","condition":"Partly Cloudy","high_temperature":"62","low_temperature":"45"}]}
NSString *linkForWoeid = [NSString stringWithFormat:@"http://where.yahooapis.com/geocode?location=%@,%@&flags=J&gflags=R&appid=zHgnBS4m",latitude,longitude];
NSURL *woeid = [NSURL URLWithString:linkForWoeid];
NSData *WoeidData = [NSData dataWithContentsOfURL:woeid];
if (WoeidData != NULL)
{
NSError *woeiderr = nil;
//NSLog(@"linkForWoeid:%@woeid:%@woeidData:%@",linkForWoeid,woeid,WoeidData);
NSDictionary *response1=[NSJSONSerialization JSONObjectWithData:WoeidData options:NSJSONReadingMutableContainers error:&woeiderr];
NSDictionary *woeidDict = [[[[response1 objectForKey:@"ResultSet"]objectForKey:@"Results"]objectAtIndex:0]objectForKey:@"woeid"];
NSString *address=[NSString stringWithFormat:@"http://weather.yahooapis.com/forecastjson?w=%@",woeidDict];
NSURL *url=[NSURL URLWithString:address];
NSData *data=[NSData dataWithContentsOfURL:url];
NSError *eqw=nil;
if (data != NULL)
{
NSDictionary *response=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&eqw];
//NSLog(@"response:%@",response);
NSString *highTempDict = [[[response objectForKey:@"forecast"]objectAtIndex:0] objectForKey:@"high_temperature"];
NSString *temp = [highTempDict stringByAppendingFormat:@" 'F"];
NSString *windSpeed = [[response objectForKey:@"wind"] objectForKey:@"speed"];
NSLog(@"wind :%@",windSpeed);
if (windSpeed == 0)
{
NSLog(@"insideif");
windSpeed = @"0";
}
NSString *imageView = [[response objectForKey:@"condition"]objectForKey:@"image" ];
答
拉西嗨请使用NSNumber代替NSString这里
NSNumber *windSpeed = [[response objectForKey:@"wind"] objectForKey:@"speed"];
正如JSON它的到来为整数值（不带引号），所以它不是一个NSString但NSNumber
，你可以得到它的字符串值为[windSpeed stringValue];
你将不得不成为一个littl e更具体。你现在在做什么？你的结果是什么？这是什么垃圾价值？ – GarlicFries
具体我得到0或有时在负面。 –
这并不是** **。告诉我们你的代码。好悲伤 - 我们甚至不知道你在用什么语言！ – GarlicFries