实现ios表情
ios支持unicode emoji字符集 (转自http://blog.csdn.net/f520131480315/article/details/6560629)
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//判断是否含有emoji字符
-( 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; }
Emoji对应编码
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