convert emojis between ios4 version and ios5 version
- Copy SREmojiUtil.h and SREmojiUtil.m to your xcode project
- Add SREmojiUtil.m into 'Compile Sources' under 'Build Phases' in Xocde.
#import "SREmojiUtil.h"
SREmojiUtil *emoji = [[[SREmojiUtil alloc] init] autorelease];
NSString *old = @"\U0001F236";
NSString *new = [emoji emoji5To4:old];