Android 禁止输入表情符

1. 添加过滤器
    

    mEtContent.setFilters(inputFilters);

2. 实现过滤器

    private InputFilter[] inputFilters=new InputFilter[]{
               new InputFilter() {
                   Pattern emoji = 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 emojiMatcher = emoji.matcher(source);
                       LogUtil.e("inputFilters : "+source+" dest: "+dest);
                       if (emojiMatcher.find() ) {
                           Toast.makeText(FeedBackActivity.this, "不支持输入表情", Toast.LENGTH_SHORT).show();
                           //  MyToast.showText("不支持输入表情");
                           return "";
                       }
                       return null;
                   }
    
               },
               new InputFilter() {
                   @Override
                   public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                       for (int i = start; i < end; i++) {
                           int type = Character.getType(source.charAt(i));
                           LogUtil.e("inputFilters2 : "+source+" type: "+type);
                           if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
                               Toast.makeText(FeedBackActivity.this, "不支持输入表情", Toast.LENGTH_SHORT).show();
                               return "";
                           }
                       }
                       return null;
                   }
               },
               /**这里限制输入的长度为200*/
               new InputFilter.LengthFilter(200)
       };

   OK