dependencies{
    compile 'com.xw.repo:xedittext:2.0.0@aar'
}

<com.xw.repo.XEditText
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:x_disableEmoji="true"/>

public class CustomEditText extends EditText {
    public CustomEditText(Context context) {
        super(context);
        init();
    }

    public CustomEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        setFilters(new InputFilter[]{new EmojiExcludeFilter()});
    }

    private class EmojiExcludeFilter implements 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));
                if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
                    return "";
                }
            }
            return null;
        }
    }
}

<EditText
    android:id="@+id/edt_note"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/note"
    android:inputType="textEmailAddress"
    android:padding="10dp"
    android:textColor="@color/white" />

public static InputFilter getEditTextFilterEmoji()
{
    return new InputFilter()
    {
        @Override
        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend)
        {
            CharSequence sourceOriginal = source;
            source = replaceEmoji(source);
            end = source.toString().length();

            if (end == 0) return ""; //Return empty string if the input character is already removed

            if (! sourceOriginal.toString().equals(source.toString()))
            {
                char[] v = new char[end - start];
                TextUtils.getChars(source, start, end, v, 0);

                String s = new String(v);

                if (source instanceof Spanned)
                {
                    SpannableString sp = new SpannableString(s);
                    TextUtils.copySpansFrom((Spanned) source, start, end, null, sp, 0);
                    return sp;
                }
                else
                {
                    return s;
                }
            }
            else
            {
                return null; // keep original
            }
        }

        private String replaceEmoji(CharSequence source)
        {

            String notAllowedCharactersRegex = "[^a-zA-Z0-9@#\$%\&\-\+\(\)\*;:!\?\~`£\{\}\[\]=\.,_/\\\s'\"<>\^\|÷×]";
            return source.toString()
                    .replaceAll(notAllowedCharactersRegex, "");
        }

    };
}

InputFilter[] filterArray = new InputFilter[] {getEditTextFilterEmoji()}
editText.setFilters(filterArray);

public class EmojiExcludeEditText extends EditText {
    public EmojiExcludeEditText(Context context) {
        super(context);
        init();
    }

    public EmojiExcludeEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public EmojiExcludeEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        setFilters(new InputFilter[]{emojiExcludeFilter});
    }

    @Override
    public void setFilters(InputFilter[] filters) {
        if (filters.length != 0) { //if length == 0 it will here return when init() is called
            boolean add = true;
            for (InputFilter inputFilter : filters) {
                if (inputFilter == emojiExcludeFilter) {
                    add = false;
                    break;
                }
            }
            if (add) {
                filters = Arrays.copyOf(filters, filters.length + 1);
                filters[filters.length - 1] = emojiExcludeFilter;
            }
        }
        super.setFilters(filters);
    }

    private EmojiExcludeFilter emojiExcludeFilter = new EmojiExcludeFilter();

    private class EmojiExcludeFilter implements 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));
                if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
                    return "";
                }
            }
            return null;
        }
    }
}

<EditText
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:digits="qwertyuiopasdfghjklzxcvbnm 1234567890 QWERTYUIOPASDFGHJKLZXCVBNM" />