How to target a specific iPhone version?

Question

I've got some code I want to only execute on the latest iPhone SDK (3.0), however I can't seem to figure out a way to target just 3.0 and ignore 2.2.1 etc. There is an ifdef statement, but it just seems to cover the entire iPhone:

#if TARGET_OS_IPHONE

Any help is appreciated.

Answer 1

You can use this #define to change what you build for each SDK...

#if __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_2_2
// iPhone 3.0 code here
#endif

And do this at run-time to run code for 3.0 and above:

float version = [[[UIDevice currentDevice] systemVersion] floatValue];
if (version >= 3.0)
    {
    // iPhone 3.0 code here
    }