iOS 判断字符串是否包含表情

+ (BOOL)stringContrainsEmoji:(NSString*)string {

__blockBOOLreturnValue =NO;

[string enumerateSubstringsInRange:NSMakeRange(0, string.length) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString* _Nullable substring,NSRangesubstringRange,NSRangeenclosingRange,BOOL* _Nonnull stop) {constunicharhs = [substring characterAtIndex:0];if(0xd800<= hs && hs <=0xdbff) {if(substring.length>1) {constunicharls = [substring characterAtIndex:1];constintuc = ((hs -0xd800) *0x400) + (ls -0xdc00) +0x10000;if(0x1d000<= uc && uc <=0x1f77f) {

returnValue =YES;

}

}

}elseif(substring.length>1) {constunicharls = [substring characterAtIndex:1];if(ls ==0x20e3) {

returnValue =YES;

}

}else{if(0x2100<= hs && hs <=0x27ff) {

returnValue =YES;

}elseif(0x2B05<= hs && hs <=0x2b07) {

returnValue =YES;

}elseif(0x2934<= hs && hs <=0x2935) {

returnValue =YES;

}elseif(0x3297<= hs && hs <=0x3299) {

returnValue =YES;

}elseif(hs ==0xa9|| hs ==0xae|| hs ==0x303d|| hs ==0x3030|| hs ==0x2b55|| hs ==0x2b1c|| hs ==0x2b1b|| hs ==0x2b50) {

returnValue =YES;

}

}

}];returnreturnValue;

}