Android Edittext过滤表情符号

https://scriptedpapers.com/2015/08/25/android-disable-emoji-in-edittext/

public static InputFilter EMOJI_FILTER = new InputFilter() { @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { for (int index = start; index < end; index++) { int type = Character.getType(source.charAt(index)); if (type == Character.SURROGATE) { return ""; } } return null; } }; editText.setFilters(new InputFilter[]{EMOJI_FILTER});