为什么这个iOS应用程序无法访问网络？

我的（Unity）应用程序抱怨我的iPod没有网络连接，而设备具有完整的Wi-Fi连接（所有其他应用程序，包括Safari）都certificate了这一点。

这不仅仅是一个API点 – 所有这些（Facebook，StoreKit等）声称网络不可用。

此消息定期从我的应用程序发送到控制台：

: Could not successfully update network info during initialization.

这可能（我认为）来自CoreTelephony 。

知道是什么导致了这个吗？ 我在调试和adhoc构建中得到它。 我没有在设备上激活任何限制（来自设置）。

该设备是iOS 6，基本sdk是iOS 5。

Answer 1

“无法在初始化期间成功更新网络信息”。 每次在没有SIM卡的设备（iPod touch或没有3G的iPad）中初始化CTTelephonyNetworkInfo时，都会显示日志。

如果它非常烦人，您可以只初始化一次并对该实例进行网络检查。

Answer 2

检查开发人员工具，检查您是否意外打开了100％丢失的互联网。 它应该在调试菜单中。

Answer 3

我尝试在appulator中设置位置并在appDelegate.m中初始化CTTelephonyNetworkInfo，但不能正常工作。 我通过定义一个新类APIAgent.m来修复它：

 + (APIAgent *)manager { static APIAgent *_manager = nil; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ _manager = [[APIAgent alloc] initWithBaseURL:[NSURL URLWithString:API_URL]]; _manager.responseSerializer = [AFJSONResponseSerializer serializer]; NSMutableIndexSet* codes = [NSMutableIndexSet indexSetWithIndexesInRange: NSMakeRange(200, 100)]; [codes addIndex: 400]; [codes addIndex: 401]; [codes addIndex: 404]; [codes addIndex: 409]; [codes addIndex: 500]; _manager.responseSerializer.acceptableStatusCodes = codes; }); return _manager; } - (id)initWithBaseURL:(NSURL *)url { self = [super initWithBaseURL:url]; if (!self) { return nil; } [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES]; [self setHeaders]; return self; } - (NSURLSessionDataTask *)GET:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress *uploadProgress))uploadProgress complete:(void (^)(NSURLSessionDataTask *task, id responseObject, NSError *error))complete { return [self GET:URLString parameters:parameters progress:nil success:^(NSURLSessionDataTask *task, id responseObject) { if (complete) { complete(task, responseObject, nil); } } failure:^(NSURLSessionDataTask *task, NSError *error) { if (complete) { complete(task, nil, error); } }]; } - (NSURLSessionDataTask *)POST:(NSString *)URLString parameters:(id)parameters complete:(void (^)(NSURLSessionDataTask *task, id responseObject, NSError *error))complete { return [self POST:URLString parameters:parameters progress:nil success:^(NSURLSessionDataTask *task, id responseObject) { if (complete) { complete(task, responseObject, nil); } } failure:^(NSURLSessionDataTask *task, NSError *error) { if (complete) { complete(task, nil, error); } }]; } - (NSURLSessionDataTask *)GET:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress *uploadProgress))uploadProgress success:(void (^)(NSURLSessionDataTask *task, id responseObject))success failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure { self.securityPolicy.allowInvalidCertificates = YES; // self signed certificate self.securityPolicy.validatesDomainName = NO; return [super GET:URLString parameters:parameters progress:nil success:success failure:failure]; } - (NSURLSessionDataTask *)POST:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress *uploadProgress))uploadProgress success:(void (^)(NSURLSessionDataTask *task, id responseObject))success failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure { NSMutableDictionary *params = [parameters mutableCopy]; self.securityPolicy.allowInvalidCertificates = YES; // self signed certificate self.securityPolicy.validatesDomainName = NO; return [super POST:URLString parameters:params progress:nil success:success failure:failure]; } - (NSURLSessionDataTask *)POST:(NSString *)URLString parameters:(id)parameters constructingBodyWithBlock:(void (^)(id))block progress:(void (^)(NSProgress *uploadProgress))uploadProgress success:(void (^)(NSURLSessionDataTask *, id))success failure:(void (^)(NSURLSessionDataTask *, NSError *))failure { NSMutableDictionary *params = [parameters mutableCopy]; if (parameters == nil) { params = [[NSMutableDictionary alloc] init]; } else { if (parameters[@"postId"] != nil) { params[@"postId"] = parameters[@"postId"]; } } self.securityPolicy.allowInvalidCertificates = YES; // http://stackoverflow.com/questions/27808249/problems-with-ssl-pinning-and-afnetworking-2-5-0-nsurlerrordomain-error-1012 self.securityPolicy.validatesDomainName = NO; return [super POST:URLString parameters:params constructingBodyWithBlock:block progress:nil success:success failure:failure]; } - (void)setHeaders { NSString *time = [NSString stringWithFormat:@"%f", [[[NSDate alloc] init] timeIntervalSince1970]]; AFHTTPRequestSerializer * serializer = self.requestSerializer; [serializer setValue:time forHTTPHeaderField:@"X-API-TIME"]; [serializer setValue:[UIDevice currentDevice].identifierForVendor.UUIDString forHTTPHeaderField:@"X-UUID"]; [serializer setValue:@"application/json" forHTTPHeaderField:@"Accept"]; NSString *preferredLang = [NSLocale preferredLanguages].firstObject; [serializer setValue:preferredLang forHTTPHeaderField:@"X-USER-LANGUAGE"]; }