How to validate Email Id in android?

Question

I had implemented email validation in my app but problem is that app was accepting local domain part of more than 64 character and when I write ..nnn..@gmail.com app was accepting this also and also As per the RFC 3696 specification #section 3, period (".") may not be used to start or end the local part, nor may two or more consecutive periods appear.

Please help me out

private boolean isValidEmail(String email) {// validation for email Id
    boolean isValid = false;
    String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,255}$";

    Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
    Matcher matcher = pattern.matcher(email);
    if (matcher.matches()) {
        isValid = true;

    }
    return isValid;
}

I need to write local-part not to exceed more than 64 characters — Raghav, Aug 30 '16 at 10:36
Try this awesome validation library https://github.com/thyrlian/AwesomeValidation — Zahid Habib, Nov 06 '17 at 14:02

score 6 · Answer 1 · answered Aug 30 '16 at 09:29

6

The Android SDK has a built-in regular expression for checking Emails.

Patterns JavaDoc

Matcher matcher = Patterns.EMAIL_ADDRESS.matcher(email);
return matcher.matches();

answered Aug 30 '16 at 09:29

Christopher

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This answer should have way more votes. It's specifically targeted for Android and does not repeat the same answer as the other ones. – Hugo Allexis Cardona Apr 09 '18 at 06:21

score 4 · Answer 2 · answered Aug 30 '16 at 10:06

4

try this code. Return true if email is valid.

android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();

answered Aug 30 '16 at 10:06

AmmY

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score 2 · Answer 3 · answered Aug 30 '16 at 09:31

public final static boolean isValidEmail(CharSequence target) {
    if (TextUtils.isEmpty(target)) {
        return false;
    } else {
        return android.util.Patterns.EMAIL_ADDRESS.matcher(target).matches();
    }
}

score 1 · Answer 4 · answered Aug 30 '16 at 09:27

1

try this,

String expression = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+";

answered Aug 30 '16 at 09:27

Niroj

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6
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but when I write ..aa..@gmail.com app was accepting – Raghav Aug 30 '16 at 09:41

score 1 · Answer 5 · answered Aug 30 '16 at 09:41

1

try this one

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class EmailValidation {
private Pattern pattern;
private Matcher matcher;

private static final String EMAIL_PATTERN = 
    "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
    + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

public EmailValidation() {
    pattern = Pattern.compile(EMAIL_PATTERN);
}

public boolean isValidate(final String hex) {
    matcher = pattern.matcher(hex);
    return matcher.matches();
  }
}

answered Aug 30 '16 at 09:41

anu

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but when I write .. and 64 character of local domain part it was excepting – Raghav Aug 30 '16 at 09:45
This is working :) – Haresh Chaudhary Sep 01 '16 at 15:30

score 1 · Answer 6 · answered Aug 30 '16 at 09:50

1

I would suggest an easy solution among all these answer

public static boolean isEmail(String email){
  return android.util.Patterns.EMAIL_ADDRESS.matcher(inputData.trim()).matches()
}

Read this documentation about Patterns.

answered Aug 30 '16 at 09:50

droidev

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score 0 · Answer 7 · answered Aug 30 '16 at 09:35

0

i would suggest you checkout this library for android client side validation

https://github.com/ragunathjawahar/android-saripaar

answered Aug 30 '16 at 09:35

Gaurav Sarma

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How to validate Email Id in android?

7 Answers7