Object-C-使用object-c开发的iOS平台网络框架-network.zip

[](https://www.versioneye.com/objective-c/reachability/references) # Reachability This is a drop-in replacement for Apple's `Reachability` class. It is ARC-compatible, and it uses the new GCD methods to notify of network interface changes. In addition to the standard `NSNotification`, it supports the use of blocks for when the network becomes reachable and unreachable. Finally, you can specify whether a WWAN connection is considered "reachable". *DO NOT OPEN BUGS UNTIL YOU HAVE TESTED ON DEVICE* ## Requirements Once you have added the `.h/m` files to your project, simply: * Go to the `Project->TARGETS->Build Phases->Link Binary With Libraries`. * Press the plus in the lower left of the list. * Add `SystemConfiguration.framework`. Boom, you're done. ## Examples ### Block Example This sample uses blocks to notify when the interface state has changed. The blocks will be called on a **BACKGROUND THREAD**, so you need to dispatch UI updates onto the main thread. // Allocate a reachability object Reachability* reach = [Reachability reachabilityWithHostname:@"www.google.com"]; // Set the blocks reach.reachableBlock = ^(Reachability*reach) { // keep in mind this is called on a background thread // and if you are updating the UI it needs to happen // on the main thread, like this: dispatch_async(dispatch_get_main_queue(), ^{ NSLog(@"REACHABLE!"); }); }; reach.unreachableBlock = ^(Reachability*reach) { NSLog(@"UNREACHABLE!"); }; // Start the notifier, which will cause the reachability object to retain itself! [reach startNotifier]; ### `NSNotification` Example This sample will use `NSNotification`s to notify when the interface has changed. They will be delivered on the **MAIN THREAD**, so you *can* do UI updates from within the function. In addition, it asks the `Reachability` object to consider the WWAN (3G/EDGE/CDMA) as a non-reachable connection (you might use this if you are writing a video streaming app, for example, to save the user's data plan). // Allocate a reachability object Reachability* reach = [Reachability reachabilityWithHostname:@"www.google.com"]; // Tell the reachability that we DON'T want to be reachable on 3G/EDGE/CDMA reach.reachableOnWWAN = NO; // Here we set up a NSNotification observer. The Reachability that caused the notification // is passed in the object parameter [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil]; [reach startNotifier]; ## Tell the world Head over to [Projects using Reachability](https://github.com/tonymillion/Reachability/wiki/Projects-using-Reachability) and add your project for "Maximum Wins!".