判断是否是 emoji表情

最新推荐文章于 2020-09-23 19:51:55 发布

汉斯哈哈哈

最新推荐文章于 2020-09-23 19:51:55 发布

阅读量1.6k

点赞数

分类专栏： iOS 基础篇

iOS 基础篇专栏收录该内容

208 篇文章

订阅专栏

此代码实现了一个函数，用于判断给定的字符串中是否包含表情符号。通过遍历字符串并检查每个字符，该函数能够识别Unicode字符，并确定它们是否属于表情符号范围。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

+
 (BOOL)stringContainsEmoji:(NSString *)string

{

    __block
 BOOL returnValue = NO;

    [string
 enumerateSubstringsInRange:NSMakeRange(0,
 [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:

     ^(NSString
 *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {

          

         const

unichar hs = [substring characterAtIndex:0];

         //
 surrogate pair

         if

(0xd800

<= hs && hs <= 0xdbff)
 {

             if

(substring.length > 1)
 {

                 const

unichar ls = [substring characterAtIndex:1];

                 const

int 
uc = ((hs - 0xd800)
 * 0x400)
 + (ls - 0xdc00)
 + 0x10000;

                 if

(0x1d000

<= uc && uc <= 0x1f77f)
 {

                     returnValue
 = YES;

                 }

             }

         }
else

if 
(substring.length > 1)
 {

             const

unichar ls = [substring characterAtIndex:1];

             if

(ls == 0x20e3)
 {

                 returnValue
 = YES;

             }

              

         }
else

{

             //
 non surrogate

             if

(0x2100

<= hs && hs <= 0x27ff)
 {

                 returnValue
 = YES;

             }
else

if 
(0x2B05

<= hs && hs <= 0x2b07)
 {

                 returnValue
 = YES;

             }
else

if 
(0x2934

<= hs && hs <= 0x2935)
 {

                 returnValue
 = YES;

             }
else

if 
(0x3297

<= hs && hs <= 0x3299)
 {

                 returnValue
 = YES;

             }
else

if 
(hs == 0xa9

|| hs == 0xae

|| hs == 0x303d

|| hs == 0x3030

|| hs == 0x2b55

|| hs == 0x2b1c

|| hs == 0x2b1b

|| hs == 0x2b50)
 {

                 returnValue
 = YES;

             }

         }

     }];

     

    return

returnValue;

}