Android中过滤Emoji表情 完整版

要过滤字符集中的表情,可以参考下面这个文章

https://www.coder4.com/archives/4729?utm_source=tuicool&utm_medium=referral

但是我不太明确他的字符集区间,于是自己搞了一套,过滤方法,大家可以参考

public class CharFilter {    /**     * 根据     * 1. "汉字区间"     * 2. "数字区间"     * 3. "小写字母区间"     * 4. "大写字母区间"     * 过滤掉非法字符的方法     * @param oldString     * @return     */    public static String filterCharToNormal(String oldString) {        StringBuilder stringBuilder = new StringBuilder();        int length = oldString.length();        for (int i = 0; i < length; i++) {//遍历传入的String的所有字符            char codePoint = oldString.charAt(i);            if (//如果当前字符为常规字符,则将该字符拼入StringBuilder                    ((codePoint >= 0x4e00) && (codePoint <= 0x9fa5)) ||//表示汉字区间                    ((codePoint >= 0x30) && (codePoint <= 0x39)) ||//表示数字区间                    ((codePoint >= 0x41) && (codePoint <= 0x5a)) ||//表示大写字母区间                    ((codePoint >= 0x61) && (codePoint <= 0x7a))) {//小写字母区间                stringBuilder.append(codePoint);            } else {//如果当前字符为非常规字符,则忽略掉该字符            }        }        return stringBuilder.toString();    }}