iOS 过滤输入Emoji表情的问题

来源：互联网发布：广告公司开单软件编辑：程序博客网时间：2024/05/16 14:57

服务器端不支持Emoji表情，因此客户端在上传用户输入时，不能包含Emoji表情。

在客户端发送请求前，判断用户输入中是否含有表情，如果含有表情，则提示用户重新输入。这个过程关键是如何判断字符串中是否含有Emoji表情。

以下是具体代码，可以写到工具类中，以后肯定会有用到

//判断是否为表情符号

+ (BOOL)stringContainsEmoji:(NSString *)string

{

__blockBOOL returnValue = NO;

[string enumerateSubstringsInRange:NSMakeRange(0, [stringlength])

options:NSStringEnumerationByComposedCharacterSequences

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

const unichar hs = [substringcharacterAtIndex:0];

if (0xd800 <= hs && hs <=0xdbff) {

if (substring.length >1) {

const unichar ls = [substringcharacterAtIndex: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 = [substringcharacterAtIndex:1];

if (ls == 0x20e3) {

returnValue =YES;

}

} else {

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;

}

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