Reachability.swift is a replacement for Apple's Reachability sample, re-written in Swift with closures.

It is compatible with iOS (8.0 - 11.0), OSX (10.9 - 10.13) and tvOS (9.0 - 11.0)

Inspired by https://github.com/tonymillion/Reachability

Keeping Reachability.swift up-to-date is a time consuming task. Making updates, reviewing pull requests, responding to issues and answering emails all take time.

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And don't forget to ★ the repo. This increases its visibility and encourages others to contribute.

Thanks Ash

If you're adding Reachability.swift using CocoaPods, note that the framework name has changed from ReachabilitySwift to Reachability (for consistency with Carthage)

enum NetworkStatus {
    case notReachable, reachableViaWiFi, reachableViaWWAN
}
var currentReachabilityStatus: NetworkStatus

enum Connection {
    case none, wifi, cellular
}
var connection: Connection

• reachableOnWWAN has been renamed to allowsCellularConnection

• reachability.currentReachabilityString has been deprecated. Use "\(reachability.connection)" instead.

• isReachable has been deprecated. Use connection != .none instead.

• isReachableViaWWAN has been deprecated. Use connection == .cellular instead.

• The notification for reachability changes has been renamed from ReachabilityChangedNotification to Notification.Name.reachabilityChanged

• All closure callbacks and notification are fired on the main queue (including when startNotifier() is called)

Please read https://github.com/ashleymills/Reachability.swift/blob/master/CONTRIBUTING.md before raising an issue.

Just drop the Reachability.swift file into your project. That's it!

CocoaPods is a dependency manager for Cocoa projects. To install Reachability.swift with CocoaPods:

1. Make sure CocoaPods is installed.

2. Update your Podfile to include the following:

   use_frameworks!
   pod 'ReachabilitySwift'

3. Run pod install.

4. In your code import Reachability like so: import Reachability

Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks. To install Reachability.swift with Carthage:

1. Install Carthage via Homebrew

$ brew update
$ brew install carthage

2. Add github "ashleymills/Reachability.swift" to your Cartfile.

3. Run carthage update.

4. Drag ReachabilitySwift.framework from the Carthage/Build/iOS/ directory to the Linked Frameworks and Libraries section of your Xcode project’s General settings.

5. Add $(SRCROOT)/Carthage/Build/iOS/ReachabilitySwiift.framework to Input Files of Run Script Phase for Carthage.

6. In your code import Reachability likse so: import Reachability

NOTE: All closures are run on the main queue.

//declare this property where it won't go out of scope relative to your listener
let reachability = Reachability()!

reachability.whenReachable = { reachability in
    if reachability.connection == .wifi {
        print("Reachable via WiFi")
    } else {
        print("Reachable via Cellular")
    }
}
reachability.whenUnreachable = { _ in
    print("Not reachable")
}

do {
    try reachability.startNotifier()
} catch {
    print("Unable to start notifier")
}

and for stopping notifications

reachability.stopNotifier()

NOTE: All notifications are delviered on the main queue.

//declare this property where it won't go out of scope relative to your listener
let reachability = Reachability()!

//declare this inside of viewWillAppear

     NotificationCenter.default.addObserver(self, selector: #selector(reachabilityChanged(note:)), name: .reachabilityChanged, object: reachability)
    do{
      try reachability.startNotifier()
    }catch{
      print("could not start reachability notifier")
    }

and

func reachabilityChanged(note: Notification) {

  let reachability = note.object as! Reachability

  switch reachability.connection {
  case .wifi:
      print("Reachable via WiFi")
  case .cellular:
      print("Reachable via Cellular")
  case .none:
    print("Network not reachable")
  }
}

and for stopping notifications

reachability.stopNotifier()
NotificationCenter.default.removeObserver(self, name: .eachabilityChanged, object: reachability)

Got a bug fix, or a new feature? Create a pull request and go for it!

If you use Reachability.swift, please let me know about your app and I'll put a link here… and tell your friends!

Cheers, Ash