//系统表情替换
+ (NSString *)stringReplaceWithFace:(NSString *)str
{
NSString *mutaStr = str;
for (int i=0x1F600; i<=0x1F64F; i++) {
if (i < 0x1F641 || i > 0x1F644) {
int sym = EMOJI_CODE_TO_SYMBOL(i);
NSString *emoT = [[NSString alloc] initWithBytes:&sym length:sizeof(sym) encoding:NSUTF8StringEncoding];
mutaStr = [mutaStr stringByReplacingOccurrencesOfString:emoT withString:[NSString stringWithFormat:@"%d",sym]];
}
}
return mutaStr;
}
iOS 表情替换成字符串
原文：http://www.cnblogs.com/tongyuling/p/4914970.html
