How to check edittext s text is email address or not

Question

how to check the text of edittext is email address or not without using javascript and regular expression  Here I used inputtype  textEmailAddress  this is working but no error message is display

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You can check it by regular expression           public boolean isValid String strEmail                pattern   Pattern compile     A-Za-z0-9-           A-Za-z0-9-      A-Za-z0-9-       A-Za-z0-9         A-Za-z  2                    matcher   pattern matcher strEmail            if  strEmail isEmpty                 return false            else if   matcher matches                  return false                    else                   return true

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In Kotlin  an E-mail address you can validate by the simple method without writing a lot of code and bother yourself with a regular expression like  quot    A-Za-z0-9-        quot   Look how is simple   fun validateEmail emailForValidation  String   Boolean                   return Patterns EMAIL ADDRESS matcher emailForValidation  matches              After you write this method for e-mail validation you just need to input your e-mail which you want to validate  If validateEmail   method returns true e-mail is valid and if false then e-mail is not valid  Here is example how you can use this method   val eMail  String   emailEditText text toString   trim    if   validateEmail eMail      IF NOT TRUE             Toast makeText context   quot Please enter valid E-mail address quot   Toast LENGTH LONG  show                return   RETURNS BACK TO IF STATEMENT

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The following code should be useful to you   String email  check setOnClickListener new OnClickListener                       public void onClick View arg0                         checkEmail email                       if  checkMail                            System out println  Valid mail Id                                                                                  public static boolean checkEmail String email             Pattern EMAIL ADDRESS PATTERN   Pattern                  compile   a-zA-Z0-9    -   1 256                                     a-zA-Z0-9  a-zA-Z0-9-  0 64                                           a-zA-Z0-9  a-zA-Z0-9-  0 25                    return EMAIL ADDRESS PATTERN matcher email  matches

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Please follow the following Steps  Step 1     lt RelativeLayout xmlns android  http   schemas android com apk res android      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  match parent      tools context   MainActivity   gt        lt EditText         android id    id editText email          android layout width  match parent          android layout height  wrap content          android layout marginLeft  20dp          android layout marginRight  20dp          android layout below    id textView email          android layout marginTop  40dp          android hint  Email Adderess          android inputType  textEmailAddress    gt        lt TextView         android id    id textView email          android layout width  wrap content          android layout height  wrap content          android layout alignParentTop  true          android layout centerHorizontal  true          android layout marginTop  30dp          android text  Email Validation Example    gt    lt  RelativeLayout gt    Step 2   import android app Activity  import android os Bundle  import android text Editable  import android text TextWatcher  import android widget EditText    Step 3   public class MainActivity extends Activity    private EditText email   private String valid email    Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity main        initilizeUI              This method is used to initialize UI Components     private void initilizeUI            TODO Auto-generated method stub      email    EditText  findViewById R id editText email        email addTextChangedListener new TextWatcher               Override         public void onTextChanged CharSequence s  int start  int before                  int count                   TODO Auto-generated method stub                      Override         public void beforeTextChanged CharSequence s  int start  int count                  int after                   TODO Auto-generated method stub                      Override         public void afterTextChanged Editable s                   TODO Auto-generated method stub                 TODO Auto-generated method stub             Is Valid Email email      pass your EditText Obj here                     public void Is Valid Email EditText edt                if  edt getText   toString      null                    edt setError  Invalid Email Address                    valid email   null                else if  isEmailValid edt getText   toString       false                    edt setError  Invalid Email Address                    valid email   null                else                   valid email   edt getText   toString                                     boolean isEmailValid CharSequence email                return android util Patterns EMAIL ADDRESS matcher email                       matches                 end of TextWatcher  email

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public static boolean isEmailValid String email        boolean isValid   false       String expression          w-          w-     a-zA-Z  1     w-  2                          0-1   0-9  1 2  25 0-5  2 0-4  0-9       0-1                    0-9  1 2  25 0-5  2 0-4  0-9                        0-1   0-9  1 2  25 0-5  2 0-4  0-9       0-1                    0-9  1 2  25 0-5  2 0-4  0-9    1                     a-zA-Z     w-        a-zA-Z  2 4                  w   -       w  -        A-Z  2 4         CharSequence inputStr   email       Pattern pattern   Pattern compile expression  Pattern CASE INSENSITIVE       Matcher matcher   pattern matcher inputStr       if   matcher matches              isValid   true            return isValid

User · Answer

for email validation try this   public boolean checkemail String email         Pattern pattern   Pattern compile           a-z          Matcher matcher   pattern matcher email       return matcher matches

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For Email Address validation try this simple and easy code       String email   inputEmail getText   toString   trim         if   Patterns EMAIL ADDRESS matcher email  matches                  inputEmail setError  Enter Valid Email Address            inputEmail requestFocus

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here email is your email-id           public boolean validateEmail String email         Pattern pattern      Matcher matcher      String EMAIL PATTERN       A-Za-z0-9-        A-Za-z0-9-      A-Za-z0-9       A-Za-z0-9         A-Za-z  2           pattern   Pattern compile EMAIL PATTERN       matcher   pattern matcher email       return matcher matches

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On Android 2 2  use this   boolean isEmailValid CharSequence email       return android util Patterns EMAIL ADDRESS matcher email  matches        for example   EditText emailid    EditText  loginView findViewById R id login email   String getEmailId   emailid getText   toString        Check if email id is valid or not        if   isEmailValid getEmailId            new CustomToast   Show Toast getActivity    loginView                   Your Email Id is Invalid

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method is used for checking valid email id format          param email     return boolean true for valid false for invalid     public static boolean isEmailValid String email        String expression        w   -       w  -        A-Z  2 4         Pattern pattern   Pattern compile expression  Pattern CASE INSENSITIVE       Matcher matcher   pattern matcher email       return matcher matches        Pass your edit text string in this function    for right email verification you need server side authentication      Note there is now a built-in method in Android  see answers below

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A simple method      private boolean isValidEmail String email        String emailRegex      A-Za-z0-9-           A-Za-z0-9-      A-Za-z0-9-       A-Za-z0-9         A-Za-z  2           if email matches emailRegex                 return true            return false

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With android util Patterns and Kotlin it s very simple  One line function which return Boolean value   fun validateEmail email  String    Patterns EMAIL ADDRESS matcher email

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I wrote a library that extends EditText which supports natively some validation methods and is actually very flexible    Current  as I write   natively supported  through xml attributes  validation methods are    regexp  for custom regexp numeric  for an only numeric field alpha  for an alpha only field alphaNumeric  guess what  email  checks that the field is a valid email creditCard  checks that the field contains a valid credit card using Luhn Algorithm phone  checks that the field contains a valid phone number domainName  checks that field contains a valid domain name   always passes the test in API Level  lt  8   ipAddress  checks that the field contains a valid ip address webUrl  checks that the field contains a valid url   always passes the test in API Level  lt  8   nocheck  It does not check anything   Default    You can check it out here  https   github com vekexasia android-form-edittext   Hope you enjoy it     In the page I linked you ll be able to find also an example for email validation  I ll copy the relative snippet here    lt com andreabaccega widget FormEditText        style   android style Widget EditText         whatever test  email         android id    id et email         android layout width  match parent         android layout height  wrap content         android hint   string hint email         android inputType  textEmailAddress           gt      There is also a test app showcasing the library possibilities   This is a screenshot of the app validating the email field

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As mentioned in one of the answers you can use the Patterns class as below   public final static boolean isValidEmail CharSequence target        if  target    null           return false       return android util Patterns EMAIL ADDRESS matcher target  matches        By chance if you are even supporting API level less than 8  then you can simply copy the Patterns java file into your project and reference it  You can get the source code for Patterns java from this link

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I Hope this code is beneficial for you      public class Register extends Activity                 EditText FirstName  PhoneNo  EmailId weight         Button Register         private static final Pattern EMAIL PATTERN   Pattern          compile     A-Za-z0-9-        A-Za-z0-9-      A-Za-z0-9       A-Za-z0-9         A-Za-z  2             private static final Pattern USERFIRSTNAME PATTERN   Pattern          compile   a-zA-Z0-9  1 250        private static final Pattern PHONE PATTERN   Pattern          compile   a-zA-Z0-9  1 250             Override    public void onCreate Bundle savedInstanceState           TODO Auto-generated method stub         super onCreate savedInstanceState           setContentView R layout register             Register  Button  findViewById R id register            FirstName  EditText findViewById R id person firstname                PhoneNo   EditText findViewById R id phone no               EmailId  EditText findViewById R id email id               weight  EditText  findViewById R id weight             Register setOnClickListener new View OnClickListener                   Override             public void onClick View v                     sFirstName  FirstName getText   toString                     sPhoneNo  PhoneNo getText   toString                    sEmailId  EmailId getText   toString                    sweight  weight getText   toString                      if sFirstName equals      sPhoneNo equals      sEmailId equals      sweight equals                                            if    CheckUsername sFirstName                                                 Toast makeText Register this   FirstName can not be null  Toast LENGTH LONG  show                                              else if    Checkphoneno sPhoneNo                                                 Toast makeText Register this   ENTER VALID mobile no   Toast LENGTH LONG  show                                                 else if    CheckEmail sEmailId                                                   Toast makeText Register this   ENTER VALID EMAIL ID  Toast LENGTH LONG  show                                                 else if    Checkweight sweight                                                Toast makeText Register this   ENTER Weight in kg  Toast LENGTH LONG  show                                                                            private boolean CheckEmail String sEmailId                         return EMAIL PATTERN matcher sEmailId  matches                                         private boolean CheckUsername String sFirstName                         return USERFIRSTNAME PATTERN matcher sFirstName  matches                                      private boolean Checkphoneno String sPhoneNo                         return PHONE PATTERN matcher sPhoneNo  matches                                      private boolean Checkweight String sweight                         return Weight PATTERN matcher sweight  matches

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private boolean isValidEmailID String email        String PATTERN       A-Za-z0-9-           A-Za-z0-9-          A-Za-z0-9-       A-Za-z0-9         A-Za-z  2           Pattern pattern   Pattern compile PATTERN       Matcher matcher   pattern matcher email       return matcher matches        For more validation click here

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In your case you can use the android util Patterns package   EditText email    EditText findViewById R id user email    if Patterns EMAIL ADDRESS matcher email getText   toString    matches        Toast makeText this   Email is VALID    Toast LENGTH SHORT  show    else     Toast makeText this   Email is INVALID    Toast LENGTH SHORT  show

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Apache Commons Validator can be used as mentioned in the other answers   Step 1 Download the jar file from here  Step 2 Add it into your project libs  The import   import org apache commons validator routines EmailValidator    The code   String email    myName example com   boolean valid   EmailValidator getInstance   isValid email     and to allow local addresses    boolean allowLocal   true  boolean valid   EmailValidator getInstance allowLocal  isValid email

[android] How to check edittext's text is email address or not?

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