我在下面的代码中访问不好,可能是什么原因?
static void ReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void *info) {
#pragma unused (target, flags)
NSCAssert(info != NULL, @"info was NULL in ReachabilityCallback");
NSCAssert([(__bridge NSObject *) info isKindOfClass:[Reachability class]], @"info was wrong class in ReachabilityCallback");