Question

I’m attempting to use a library which has a iOS5 and iOS4.3 flavours. The problem I’m having is getting the right version included conditionally, i.e:

for iOS5:

#include ios5stuff.h
@implementation
  // do stuff
@end

For iOS4

#include ios4stuff.h
@implementation
  // do stuff
@end

I can see how to conditionally include stuff within the class’s implementation block, but not outside this. Can anyone suggest the best way of doing this?

Answer 1

You should be able to do this (untested):

#import <Availability.h>

#if defined(__IPHONE_5_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_5_0
#import "my_header_for_io5_and_above.h"
#elif defined(__IPHONE_4_3) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_4_3
#import "my_header_for_ios4.3.h"
#else
#error Your SDK is too old ! Need at least 4.3.
#endif