2
通常、私は（EXAMPLE）のようなJSONフィードを解析しています。私のJSONでApple JSONの構文解析
{
"AppStore": [
{
"Application": "Game",
"KeyID": "zero"
}
]
}
私はその後、
NSArray* Parse = [json objectForKey:@"AppStore"];
をやっているが、私は今のAppStoreのJSONを解析することは、他の構造を有している
http://itunes.apple.com/lookup?id=387633954
{
"resultCount": 1,
"results": [
{
"kind": "software",
"features": [
"gameCenter",
"iosUniversal"
],
"supportedDevices": [
"all"
],
"isGameCenterEnabled": true,
"artistViewUrl": "http://itunes.apple.com/us/artist/mcsebi/id387633957?uo=4",
"artworkUrl60": "http://a5.mzstatic.com/us/r1000/072/Purple/v4/98/a6/56/98a656e8-666a-89ab-c8f0-878b61b9f8f2/Icon.png",
"screenshotUrls": [
"http://a3.mzstatic.com/us/r1000/076/Purple/v4/fe/36/80/fe3680ae-5439-a2f1-6675-d3246b64f333/mza_11015238406403423.png",
"http://a4.mzstatic.com/us/r1000/099/Purple/v4/73/98/1c/73981cbf-fb79-dc38-9dac-61ab46c2ac60/mzl.gzibbhfx.png",
"http://a3.mzstatic.com/us/r1000/103/Purple/v4/72/b6/87/72b68713-7e5a-f675-83c3-85c2f0e96df1/mzl.gykakuht.png",
"http://a1.mzstatic.com/us/r1000/113/Purple/v4/fa/d6/c4/fad6c453-9da5-2506-2b06-42ed5ff6bd63/mzl.hqbrlhog.png",
"http://a2.mzstatic.com/us/r1000/120/Purple/v4/9e/7a/13/9e7a1388-5089-11e7-0c03-3d1868abbb82/mzl.jogfcyqv.png"
],
"ipadScreenshotUrls": [
"http://a1.mzstatic.com/us/r1000/096/Purple/v4/1f/5a/92/1f5a9249-03b8-90dc-8226-18b1785d5f7d/mzl.ilqgfose.1024x1024-65.jpg",
"http://a5.mzstatic.com/us/r1000/070/Purple/v4/79/74/6b/79746ba8-7ea0-6e81-93d0-9e2493412e21/mzl.saleskru.1024x1024-65.jpg",
"http://a1.mzstatic.com/us/r1000/068/Purple/v4/12/38/91/1238914f-7387-9c9e-06e4-11a55871b04a/mzl.qmiockwv.1024x1024-65.jpg",
"http://a4.mzstatic.com/us/r1000/091/Purple/v4/3b/cf/62/3bcf62e6-4d84-4fc0-e721-c328361f5c95/mzl.somobtxy.1024x1024-65.jpg",
"http://a1.mzstatic.com/us/r1000/074/Purple/v4/e9/d3/e7/e9d3e7b7-b52c-e204-e4b6-1ab5de79e85a/mzl.nedztyfk.1024x1024-65.jpg"
],
"artworkUrl512": "http://a3.mzstatic.com/us/r1000/115/Purple/v4/0d/9c/ec/0d9cec04-91b3-5fe2-fa40-100660250f4a/mzl.kavmnegm.png",
"artistId": 387633957,
"artistName": "McSebi",
"price": 0.99,
"version": "1.2",
"description": "Connect M is a simple, but very addictive puzzle game. Connect two tiles of the same color and try to remove all the tiles within a time limit. Connect M features:\n \n· 37 levels in 9 worlds. Each world has a new feature\n· High quality graphics\n· High quality sound effects and soundtrack\n\nFollow us on Twitter: http://twitter.com/qt_games\n\nMany customers demanded to save a game explicitely.\nNow you can do it by pressing the disk icon after pausing a game.",
"genreIds": [
"6014",
"7003",
"7012"
],
"releaseDate": "2010-08-24T02:46:16Z",
"sellerName": "Sebastian Wegner",
"currency": "USD",
"genres": [
"Games",
"Arcade",
"Puzzle"
],
"bundleId": "com.mcsebi.connectm",
"trackId": 387633954,
"trackName": "Connect M",
"primaryGenreName": "Games",
"primaryGenreId": 6014,
"releaseNotes": "Level selection:\nYou can now choose to start the game in every world you completed at least once.",
"wrapperType": "software",
"trackCensoredName": "Connect M",
"trackViewUrl": "http://itunes.apple.com/us/app/connect-m/id387633954?mt=8&uo=4",
"contentAdvisoryRating": "4+",
"artworkUrl100": "http://a3.mzstatic.com/us/r1000/115/Purple/v4/0d/9c/ec/0d9cec04-91b3-5fe2-fa40-100660250f4a/mzl.kavmnegm.png",
"languageCodesISO2A": [
"DE",
"EN",
"IT",
"NL"
],
"fileSizeBytes": "24434872",
"sellerUrl": "http://www.mcsebi.com",
"trackContentRating": "4+"
}
]
}
私が行った場合;
NSArray* Parse = [json objectForKey:@"resultCount"]; or
NSArray* Parse = [json objectForKey:@"results"];
アプリケーションがクラッシュしている：
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'data parameter is nil'
*** First throw call stack:
(0x352b888f 0x366df259 0x352b8789 0x352b87ab 0x311c05b3 0x8c9e3 0x352171fb 0x3116e747 0x3528cad3 0x3528c29f 0x3528b045 0x3520e4a5 0x3520e36d 0x3650a439 0x32304e7d 0x807a5 0x80240)
terminate called throwing an exception(lldb)
編集：
@interface NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress;
-(NSData*)toJSON;
@end
@implementation NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress
{
NSData* data = [NSData dataWithContentsOfURL: [NSURL URLWithString: urlAddress] ];
__autoreleasing NSError* error = nil;
id result = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
-(NSData*)toJSON
{
NSError* error = nil;
id result = [NSJSONSerialization dataWithJSONObject:self options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
@end
//
- (void)fetchedData:(NSData *)responseData {
NSError* error;
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData //1
options:kNilOptions
error:&error];
NSArray* UrlParse = [json objectForKey:@"resultCount"];
NSDictionary* SParse = [urlParse objectAtIndex:0];
}
いずれの場合でも 'json'はどのように構築されますか？ –
@MattBall私の編集をご覧ください。 – Jones
多分、JSONKitでやってみてください。それはほぼ確実に速くなるでしょうが、私は、これらの種類の問題が発生したときにそれがより信頼できることを発見しました。 – farski