How to detect iPhone OS version in the app?

Question

I would like to detect iPhone OS version in the app, can you post sample code as well. I tried using macro that didn't help.

Answer 1

You need to use the macros if you want conditional compilation:

 #if __IPHONE_8_0
 // Works on >= version 8.0
 #else
 // Works on < version 8.0
 #endif

Or alternatively, to check at runtime, use:

float ver = [[[UIDevice currentDevice] systemVersion] floatValue];
if (ver >= 8.0) {
    // Only executes on version 8 or above.
}