获取App Store上的版本号
////获取App Store版本
-(NSString*)getAPPstoreInfo{
NSString*appID=@"1454501914";
NSString *urlStr=[NSString stringWithFormat:@"https://itunes.apple.com/cn/lookup?id=%@",appID];
NSURL*url=[NSURLURLWithString:urlStr];
NSData*json = [NSDatadataWithContentsOfURL:url];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:json options:kNilOptions error:NULL];//解析json文件
NSArray*results = [dictobjectForKey:@"results"];
NSDictionary*result = [resultsobjectAtIndex:0];
NSString*versionStr = [resultobjectForKey:@"version"];//获得AppStore中的app的版本
returnversionStr?versionStr:@"0";
}
