title: How to check if WiFi is on or off in iOS Swift 2?
body: <p>I want to check if the wifi is off then show alert to the user to check his/her connectivity.</p>
  
  <p>I find code like this but it checks if there is an internet connection, not checking if the wifi is on or off:</p>
  
  <pre><code>func isConnectionAvailble()-&gt;Bool{
  
    var rechability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, "www.apple.com").takeRetainedValue()
  
    var flags : SCNetworkReachabilityFlags = 0
  
    if SCNetworkReachabilityGetFlags(rechability, &amp;flags) == 0
    {
       return false
    }
  
    let isReachable = (flags &amp; UInt32(kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags &amp; UInt32(kSCNetworkFlagsConnectionRequired)) != 0
    return (isReachable &amp;&amp; !needsConnection)
  }
  </code></pre>