iOS 检测更新版本

#define APP_URL @"http://itunes.apple.com/cn/lookup?id=1169362912"

//检测商店的版本
AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
[mgr POST:APP_URL parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"------------------------------------------------------------------------%@",responseObject);
/*responseObject是个字典{}，有两个key KEYresultCount = 1//表示搜到一个符合你要求的APP
results =（）//这是个只有一个元素的数组，里面都是app信息，那一个元素就是一个字典。里面有各种key。其中有 trackName （名称）trackViewUrl = （下载地址）version （可显示的版本号）等等
*/ //具体实现为
NSArray *arr = [responseObject objectForKey:@"results"];
NSDictionary *dic = [arr firstObject];
NSString *versionStr = [dic objectForKey:@"version"];
NSString *trackViewUrl = [dic objectForKey:@"trackViewUrl"];
NSString *releaseNotes = [dic objectForKey:@"releaseNotes"];//更新日志 //NSString* buile = [[NSBundle mainBundle] objectForInfoDictionaryKey: (NSString*) kCFBundleVersionKey];build号 // 加测当前的版本
NSString *app_Version = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
NSLog(@"------------------------------------------------------------------------%@",app_Version);
if ([self compareVersionsFormAppStore:versionStr WithAppVersion:app_Version]) {
UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:[NSString stringWithFormat:@"发现新版本:%@",versionStr] message:releaseNotes preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"点击了取消");
}]; UIAlertAction *OKAction = [UIAlertAction actionWithTitle:@"更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"点击了知道了");
NSURL * url = [NSURL URLWithString:trackViewUrl];//itunesURL = trackViewUrl的内容
[[UIApplication sharedApplication] openURL:url];
}];
[alertVC addAction:cancelAction];
[alertVC addAction:OKAction];
[self presentViewController:alertVC animated:YES completion:nil];
} } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@""); }];

//比较版本的方法，在这里我用的是Version来比较的
- (BOOL)compareVersionsFormAppStore:(NSString*)AppStoreVersion WithAppVersion:(NSString*)AppVersion { BOOL littleSunResult = false; NSMutableArray* a = (NSMutableArray*) [AppStoreVersion componentsSeparatedByString: @"."];
NSMutableArray* b = (NSMutableArray*) [AppVersion componentsSeparatedByString: @"."]; while (a.count < b.count) { [a addObject: @"0"]; }
while (b.count < a.count) { [b addObject: @"0"]; } for (int j = 0; j<a.count; j++) {
if ([[a objectAtIndex:j] integerValue] > [[b objectAtIndex:j] integerValue]) {
littleSunResult = true;
break;
}else if([[a objectAtIndex:j] integerValue] < [[b objectAtIndex:j] integerValue]){
littleSunResult = false;
break;
}else{
littleSunResult = false;
}
}
return littleSunResult;//true就是有新版本，false就是没有新版本}