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    <p>If you're looking to place this particular method in a location that can be accessed and called from the entirety of your application then this is simply a design decision. There are a number of ways to achieve this.</p> <p>I like to make use of the singleton paradigm when implementing global methods. John Wordsworth covers this in a nice succinct blog post here:</p> <p><a href="http://www.johnwordsworth.com/2010/04/iphone-code-snippet-the-singleton-pattern/" rel="nofollow">http://www.johnwordsworth.com/2010/04/iphone-code-snippet-the-singleton-pattern/</a></p> <p>Here's a quick chunk of code:</p> <blockquote> <p>InternetConnectionChecker.h</p> </blockquote> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface InternetConnectionChecker : NSObject // Accessor for singelton instance of internet connection checker. + (InternetConnectionChecker *)sharedInternetConnectionChecker; // Check to see whether we have a connection to the internet. Returns YES or NO. - (BOOL)connected; @end </code></pre> <blockquote> <p>InternetConnectionChecker.m</p> </blockquote> <pre><code>#import "InternetConnectionChecker.h" @implementation InternetConnectionChecker // Accessor for singelton instance of internet connection checker. + (InternetConnectionChecker *)sharedInternetConnectionChecker { static InternetConnectionChecker *sharedInternetConnectionChecker; @synchronized(self) { if (!sharedInternetConnectionChecker) { sharedInternetConnectionChecker = [[InternetConnectionChecker alloc] init]; } } return sharedInternetConnectionChecker; } // Check to see whether we have a connection to the internet. Returns YES or NO. - (BOOL)connected { NSURL *scriptUrl = [NSURL URLWithString:@"http://www.google.com/m"]; NSData *data = [NSData dataWithContentsOfURL:scriptUrl]; if (data) { NSLog(@"Device is connected to the internet"); return TRUE; } else { NSLog(@"Device is not connected to the internet"); return FALSE; } } @end </code></pre> <p>In my example I've amended your method to return a true/false so you can handle the result within the UI calling the method appropriately but you could continue to show a UIAlertView if you pleased.</p> <p>You would then use the singleton in the following way:</p> <pre><code>InternetConnectionChecker *checker = [InternetConnectionChecker sharedInternetConnectionChecker]; BOOL connected = [checker connected]; </code></pre>
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    1. PORun Internet Connection Check Throughout Entire App
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    1. USElliott James Perry
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    1. COThank you Elliott! This is awesome! So in my view controllers, do I need to do #import "InternetConnectionChecker.h"? What would a viewController look like to pull this all together?
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    2. COThat's exactly right. After the import the two lines: `InternetConnectionChecker *checker = [InternetConnectionChecker sharedInternetConnectionChecker]; BOOL connected = [checker connected];` should be sufficient to call your method.
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    3. COGreat, then I can just do if (connected == TRUE) { ... } yes?
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