How to define preprocessor macro to check iOS version

Question

I use it to check iOS version, but it doesn\'t work:

#ifndef kCFCoreFoundationVersionNumber_iPhoneOS_5_0
#define kCFCoreFoundationVersionNumber_iPhoneOS_5_0          


        

Answer 1

Define this method:

+(BOOL)iOS_5 {
    NSString *osVersion = @"5.0";
    NSString *currOsVersion = [[UIDevice currentDevice] systemVersion];
    return [currOsVersion compare:osVersion options:NSNumericSearch] == NSOrderedAscending;
}

Then define the macro as that method.