How To check if wifi option enabled or not

Question

How to check if wifi option is enabled on the iPhone or not (but maybe iPhone not connected to one of the wifi net).

Answer 1

  First import Reachability files into your project.

 -(void)loginButtonTouched
{  
  bool success = false;
  const char *host_name = [@"www.google.com" 
             cStringUsingEncoding:NSASCIIStringEncoding];

  SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName
                                                (NULL, host_name);
  SCNetworkReachabilityFlags flags;
  success = SCNetworkReachabilityGetFlags(reachability, &flags);
  bool isAvailable = success && (flags & kSCNetworkFlagsReachable) && 
                   !(flags & kSCNetworkFlagsConnectionRequired);

  if (isAvailable) 
  {
      NSLog(@"Host is reachable: %d", flags);
      // Perform Action if Wifi is reachable and Internet Connectivity is present
  }
  else
  {
      NSLog(@"Host is unreachable");
      // Perform Action if Wifi is reachable and Internet Connectivity is not present
  }       
}

When loginButtonTouched method is called we check that www.google.com is reachable or not. SCNetworkReachabilityFlags returns flags which helps us to understand the Status of internet connectivity. If isAvailable variable returns "true" then Host is Reachable means Wifi is reachable and Internet Connectivity is present.