Verify that the input is Chinese characters and phone number in Android, email verification

1, verify whether it is a Chinese character

Verify that the nickname private Boolean verifynickname () {String nickname = Edt_username.gettext (). toString ();            if (nickname = = NULL | | nickname.length () = = 0) {Edt_username.seterror ("cannot be empty");        return false;        } int len = 0;        char[] Nickchar = Nickname.tochararray ();            for (int i = 0; i < nickchar.length; i++) {if (Ischinese (Nickchar[i])) {len + 2;            } else {len + 1; }} if (Len < 4 | | len >) {edt_username.seterror ("the correct nickname should be \n1, 4-15 characters \n2, 2-7 kanji \n3, not mail            box and mobile phone number ");        return false;    } return true;        Private Boolean Ischinese (char c) {Character.unicodeblock UB = Character.UnicodeBlock.of (c); if (UB = = Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS | | ub = = Character.UnicodeBlock.CJK_COMPATIBILITY_I deographs | |  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) {return true;    } return false; }

2, verify the phone number, mailbox

Determines whether the phone number is    private Boolean isphone (String inputtext) {        pattern P = pattern                . Compile ("^ (13[0-9]) | ( 15[^4,\\D]) | (18[0,5-9])) \\d{8}$ ");        Matcher m = P.matcher (inputtext);        return m.matches ();    }    Determines whether the format is e-mail public    boolean isemail (string email) {        string str = "^ ([a-za-z0-9_\\-\\.] +) @ ((\\[[0-9]{1,3}\\. [0-9] {1,3}\\. [0-9] {1,3}\\.) | ([a-za-z0-9\\-]+\\.) +)) ([a-za-z]{2,4}| [0-9] {1,3}) (\\]?) $";        Pattern p = pattern.compile (str);        Matcher m = p.matcher (email);        return m.matches ();    }

Verify that the input is Chinese characters and phone number in Android, email verification