emoji表情

原创于 2023-02-28 10:02:12 发布 · 237 阅读

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#java #c++ #android

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这篇博客介绍了一个Java方法，用于检测字符串中是否包含emoji表情，并提供了一个InputFilter的实现，以防止输入框中输入非法字符，尤其是emoji。

/**

检测是否有emoji表情
@param source
@return
*/
public static boolean containsEmoji(String source) {
int len = source.length();
for (int i = 0; i < len; i++) {
char codePoint = source.charAt(i);
if (!isEmojiCharacter(codePoint)) { // 如果不能匹配,则该字符是Emoji表情
return true;
}
}
return false;
}

/**

判断是否是Emoji
@param codePoint
```
       比较的单个字符
```
@return
*/
private static boolean isEmojiCharacter(char codePoint) {
return (codePoint == 0x0) || (codePoint == 0x9) || (codePoint == 0xA)
|| (codePoint == 0xD)
|| ((codePoint >= 0x20) && (codePoint <= 0xD7FF))
|| ((codePoint >= 0xE000) && (codePoint <= 0xFFFD))
|| ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF));
}

//完美解决输入框中不能输入的非法字符
InputFilter inputFilter=new InputFilter() {

   Pattern pattern = Pattern.compile("[^a-zA-Z0-9\\u4E00-\\u9FA5_,.?!:;…~_\\-\"\"/@*+'()<>{}/[/]()<>{}\\[\\]=%&$|\\/♀♂#¥£¢€\"^` ，。？！：；……～“”、“（）”、（——）‘’＠‘·’＆＊＃《》￥《〈〉》〈＄〉［］￡［］｛｝｛｝￠【】【】％〖〗〖〗／〔〕〔〕＼『』『』＾「」「」｜﹁﹂｀．]");
 
    @Override
    public CharSequence filter(CharSequence charSequence, int i, int i1, Spanned spanned, int i2, int i3) {
        Matcher matcher=  pattern.matcher(charSequence);
        if(!matcher.find()){
            return null;
        }else{
            Toast.makeText(MyApplication.context, "非法字符！", Toast.LENGTH_SHORT).show();
            return "";
        }

    }
};

//调用
EditText et = (EditText) view.findViewById(R.id.et);
et.setFilters(new InputFilter[]{inputFilter});