never get block called in iOS8.4 on iPhone6

[BeingX]

i use it like this,but the status block never called.

• (instancetype)init { if (self = [super init]) { _reachability = [Reachability reachabilityWithHostName:DEFAULT_SITE]; __weak typeof(self) weakSelf = self; _reachability.reachableBlock = ^(Reachability*reach) { weakSelf.sNetWorkStatus = [reach currentReachabilityStatus]; };

  _reachability.unreachableBlock = ^(Reachability*reach)
  {
      weakSelf.sNetWorkStatus = [reach currentReachabilityStatus];
      NSLog(@"UNREACHABLE!");
  };
  [_reachability startNotifier];

  } return self; }

[BeingX]

when restart system ，it normal again,it confuses me