EditText 禁止输入emoji（过滤emoji）

EditText 禁止输入emoji的方式就是用InputFilter过滤调emoji表情。代码如下:

 /**
     * 给edittext设置过滤器 过滤emoji
     *
     * @param et
     */
    public static void setEmojiFilter(EditText et) {
        InputFilter emojiFilter = new InputFilter() {
            Pattern pattern = Pattern.compile("[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]", Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE);

            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                Matcher matcher = pattern.matcher(source);
                if(matcher.find()){
                    return "";
                }
                return null;
            }
        };
        et.setFilters(new InputFilter[]{emojiFilter});
    }