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iPhone Tutorial: How to check iOS version in runtime (getting ready for iOS6)

I want to check if the iPhone the app is running on is running on iOS6 or a version below it.

1. Put this where all your constants and defines go:

#define IS_IOS5_OR_BELOW ([[[[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."] objectAtIndex:0] intValue] < 6)

2. Use this way:

    // iOS 4-5 code
} else {
     // iOS 6 code

Hope this snippet can help you differentiating between version of iOS, mostly when iOS 6 is coming and you want to be ready for it :)