禁止输入各种表情符号

```
[_nameFieldaddTarget:selfaction:@selector(limitLength:)forControlEvents:UIControlEventEditingChanged];

// 限制字数，区别中英文

(void)limitLength:(UITextField *)sender
{
bool isChinese;//判断当前输入法是否是中文
if ([[[UITextInputModecurrentInputMode] primaryLanguage]isEqualToString: @”en-US”]) {

isChinese = false;

}
else
{

isChinese = true;

}
if(sender ==_nameField) {

// 8位
NSString *str = [[_nameFieldtext] stringByReplacingOccurrencesOfString:@"?"withString:@""];
str = [selfdisable_emoji:str];
if (isChinese) {//中文输入法下
    UITextRange *selectedRange = [_nameFieldmarkedTextRange];
    //获取高亮部分
    UITextPosition *position = [_nameFieldpositionFromPosition:selectedRange.startoffset:0];
    // 没有高亮选择的字，则对已输入的文字进行字数统计和限制
    if (!position) {
        DLog(@"汉字");
        if ( str.length>=kMaxCount) {
            NSString *strNew = [NSStringstringWithString:str];
            [_nameFieldsetText:[strNew substringToIndex:kMaxCount]];
        } else {
            [_nameFieldsetText:str];
        }
    }
    else {
        DLog(@"输入的英文还没有转化为汉字的状态");

    }
}else{
    DLog(@"str=%@;本次长度=%d",str,[strlength]);
    if ([strlength]>=kMaxCount) {
        NSString *strNew = [NSStringstringWithString:str];
        [_nameFieldsetText:[strNew substringToIndex:kMaxCount]];
    }
}

}
}

`` `` ``- (``void``)textViewDidChange:(``UITextView`` *)textView``{`` ``NSRange`` textRange = [textView`` selectedRange``];`` ``[textView`` setText``:[``self`` disable_emoji``:[textView`` text``]]];`` ``[textView`` setSelectedRange``:textRange];``}
// 详情禁止输入表情符号- (``NSString`` *)disable_emoji:(``NSString`` *)text``{`` ``NSRegularExpression`` *regex = [``NSRegularExpression`` regularExpressionWithPattern``:``@"[^\\u0020-\\u007E\\u00A0-\\u00BE\\u2E80-\\uA4CF\\uF900-\\uFAFF\\uFE30-\\uFE4F\\uFF00-\\uFFEF\\u0080-\\u009F\\u2000-\\u201f\r\n]"`` options``:``NSRegularExpressionCaseInsensitive`` error``:nil``];`` ``NSString`` *modifiedString = [regex`` stringByReplacingMatchesInString``:text`` ``options``:``0`` ``range``:NSMakeRange(``0``, [text`` length``])`` ``withTemplate``:``@""``];`` ``return`` modifiedString;``}

iodefog

禁止输入各种表情符号