iOS應用程式之如何獲取版本號實現應用更新
{
resultCount = 1;
results = (
{
artistId = 301724683;
artistName = Citibank;
artistViewUrl = "http://itunes.apple.com/us/artist/citibank/id301724683?uo=4";
artworkUrl100 = "http://a5.mzstatic.com/us/r1000/117/Purple/a1/85/a9/mzl.hvwnfdkw.png";
artworkUrl512 = "http://a5.mzstatic.com/us/r1000/117/Purple/a1/85/a9/mzl.hvwnfdkw.png";
artworkUrl60 = "http://a2.mzstatic.com/us/r1000/099/Purple/67/86/7e/mzi.utfdvrgy.png";
averageUserRating = "3.5";
averageUserRatingForCurrentVersion = 5;
contentAdvisoryRating = "4+";
currency = USD;
description = "Description of you app.";
features = (
iosUniversal
);
fileSizeBytes = 4141195;
genreIds = (
6015
);
genres = (
Finance
);
ipadScreenshotUrls = (
"http://a1.mzstatic.com/us/r1000/095/Purple/e0/a6/17/mzl.pbbxcjzt.1024x1024-65.jpg",
"http://a3.mzstatic.com/us/r1000/036/Purple/cc/14/98/mzl.dyairego.1024x1024-65.jpg"
);
isGameCenterEnabled = 0;
kind = software;
languageCodesISO2A = (
EN
);
price = 0;
primaryGenreId = 6015;
primaryGenreName = Finance;
releaseDate = "2011-01-24T06:14:35Z";
releaseNotes = "* View Real-time streaming prices for U.S. Treasuries \n\n* Open and Save your Citi Research in your favorite PDF Reader and Library such as iBooks\n\n* Search for your favorite videos";
screenshotUrls = (
"http://a3.mzstatic.com/us/r1000/066/Purple/17/51/fb/mzl.zywiavgn.png",
"http://a5.mzstatic.com/us/r1000/026/Purple/73/85/97/mzl.csmdtndk.png"
);
sellerName = "Citibank, N.A.";
sellerUrl = "http://";
supportedDevices = (
all
);
trackCensoredName = "Citi Velocity";
trackContentRating = "4+";
trackId = 414697122;
trackName = "Citi Velocity";
trackViewUrl = "http://itunes.apple.com/us/app/citi-velocity/id414697122?mt=8&uo=4";
userRatingCount = 5;
userRatingCountForCurrentVersion = 1;
version = "1.4";
wrapperType = software;
}
);
}
然後從中取得 results 陣列即可，具體程式碼如下所示：
NSDictionary *jsonData = [dataPayload JSONValue];
NSArray *infoArray = [jsonData objectForKey:@"results"];
NSDictionary *releaseInfo = [infoArray objectAtIndex:0];
NSString *latestVersion = [releaseInfo objectForKey:@"version"];
latestVersion即為Appstore上的最新發布版本