Androidコード設定EditText漢字フィルタ

	/**
     *   EditText      
     */
    public static void SetEditTextFilter(EditText editText, final boolean filterChinese) {
        InputFilter filter = new InputFilter() {
            public CharSequence filter(CharSequence source, int start, int end,
                                       Spanned dest, int dStart, int dEnd) {
                for (int i = start; i < end; i++) {
                    if (filterChinese == (isChinese(source.charAt(i)))) {
                        return "";
                    }
                }
                return null;
            }
        };
        editText.setFilters(new InputFilter[]{filter});
    }

    /**
     *            
     *
     * @param c     
     * @return      
     */
    public static boolean isChinese(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        return ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS;
    }