- 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:
This returns an opaque object which you should use to remove the handler at the
appropriate time (in a
dealloc, say) with:
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.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.m files to your
project. But I think any of the previous two methods are preferable to
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
which shows the same project using
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!