I don't use this library, as you can probably tell by how long it's been since it's been updated. I've marked it as deprecated on CocoaPods and will be removing it in 2018. If anybody would like to take over the pod let me know and I'll try and get it done.

• Originally By Nick Paulson
• KVO support added by Adam Ernst
• ARC support and changes to the interface by Abizer Nasir, and now I seem to be the project maintainer.

NPReachability is an evolution of Apple's Reachability class that provides information about the network status. It has a slightly simpler interface; more concerned with the changes to the network status rather than monitoring a particular URL.

As well as supporting the original's Notification based monitoring, this class supports both KVO and Blocks, so you can choose whichever way of handling changes as your application requires.

This class is written as a singleton, so be sure to reference it as

NPReachability *reachability = [NPReachability sharedInstance];

Make sure you maintain a strong reference to at least one object of this class or else ARC will clean it up underneach you.

Handlers are declared as

typedef void (^ReachabilityHandler)(NPReachability *curReach);

This takes the NPReachability object as a parameter. As originally written this class passed the SCNetworkReachabilityFlags as a parameter, but you can get that and more by messaging the object directly

You add blocks to be executed when the network status changes by using:

- (id)addHandler:(ReachabilityHandler)handler;

This returns an opaque object which you should use to remove the handler at the appropriate time (in a dealloc, say) with:

- (void)removeHandler:(id)opaqueObject;

Two properties can observed for changes to the network status:

@property (nonatomic, readonly, getter=isCurrentlyReachable) BOOL currentlyReachable;
@property (nonatomic, readonly) SCNetworkReachabilityFlags currentReachabilityFlags;

When the network status changes a NPReachabilityChangedNotification is sent with the NPReachability instance as the notification object.

• Xcode 5.0+ for ARC support, automatic synthesis and compatibility libraries. This might work for Xcode 4.2+, but I haven't been able to test it.
• The SystemConfiguration Framework should be added to your project.

Add the project as a submodule to your project's repository and add the NPReachability.h and NPReachability.m files to your project.

This is also available as a CocoaPod. If you're a Podder, then you already know what to do to add this to your project.

Just add the NPReachability.h and NPReachability.m files to your project. But I think any of the previous two methods are preferable to this.

Apple provided the Reachability Sample Code to demonstrate the use of their Reachability class. To see how to use this Class instead have a look at NPReachability-Example which shows the same project using NPReachability instead.

Please use and improve! Patches accepted, or create an issue.

I'd love it if you could send me a note as to which app you're using it with!