Email Address Validation in Android on EditText

Question

How can we perform Email Validation on edittext in android   I have gone through google  amp  SO but I didn t find out a simple way to validate it

User · Accepted Answer

To perform Email Validation we have many ways,but simple & easiest way are two methods.

1- Using EditText(....).addTextChangedListener which keeps triggering on every input in an EditText box i.e email_id is invalid or valid

/**
 * Email Validation ex:- [email protected]
*/


final EditText emailValidate = (EditText)findViewById(R.id.textMessage); 

final TextView textView = (TextView)findViewById(R.id.text); 

String email = emailValidate.getText().toString().trim();

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

emailValidate .addTextChangedListener(new TextWatcher() { 
    public void afterTextChanged(Editable s) { 

    if (email.matches(emailPattern) && s.length() > 0)
        { 
            Toast.makeText(getApplicationContext(),"valid email address",Toast.LENGTH_SHORT).show();
            // or
            textView.setText("valid email");
        }
        else
        {
             Toast.makeText(getApplicationContext(),"Invalid email address",Toast.LENGTH_SHORT).show();
            //or
            textView.setText("invalid email");
        }
    } 
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    // other stuffs 
    } 
    public void onTextChanged(CharSequence s, int start, int before, int count) {
    // other stuffs 
    } 
});

2- Simplest method using if-else condition. Take the EditText box string using getText() and compare with pattern provided for email. If pattern doesn't match or macthes, onClick of button toast a message. It ll not trigger on every input of an character in EditText box . simple example shown below.

final EditText emailValidate = (EditText)findViewById(R.id.textMessage); 

final TextView textView = (TextView)findViewById(R.id.text); 

String email = emailValidate.getText().toString().trim();

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

// onClick of button perform this simplest code.
if (email.matches(emailPattern))
{
Toast.makeText(getApplicationContext(),"valid email address",Toast.LENGTH_SHORT).show();
}
else 
{
Toast.makeText(getApplicationContext(),"Invalid email address", Toast.LENGTH_SHORT).show();
}

User · Answer

try this   public static final 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                                       and in tne edit text  final String emailText   email getText   toString    EMAIL ADDRESS PATTERN matcher emailText  matches

User · Answer

Use this method to validate the EMAIL  -      public static boolean isEditTextContainEmail EditText argEditText                 try                   Pattern pattern   Pattern compile     A-Za-z0-9-        A-Za-z0-9-      A-Za-z0-9       A-Za-z0-9         A-Za-z  2                        Matcher matcher   pattern matcher argEditText getText                     return matcher matches                  catch  Exception e                    e printStackTrace                    return false                            Let me know if you have any queries

User · Answer

This is a sample method i created to validate email addresses  if the string parameter passed is a valid email address   it returns true   else false is returned   private boolean validateEmailAddress String emailAddress       String  expression      w  -        w      w       w  -        A-Z  2 4              CharSequence inputStr   emailAddress           Pattern pattern   Pattern compile expression Pattern CASE INSENSITIVE            Matcher matcher   pattern matcher inputStr            return matcher matches

User · Answer

Java    public static boolean isValidEmail CharSequence target        return   TextUtils isEmpty target   amp  amp  Patterns EMAIL ADDRESS matcher target  matches         Kotlin   fun CharSequence  isValidEmail      isNullOrEmpty    amp  amp  Patterns EMAIL ADDRESS matcher this  matches     Edit  It will work On Android 2 2  onwards     Edit  Added missing

User · Answer

Use this method for validating your email format  Pass email as string   it returns true if format is correct otherwise false          validate your email address format  Ex-akhi mani com     public boolean emailValidator String email         Pattern pattern      Matcher matcher      final 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

User · Answer

public static boolean isEmailValid String email        boolean isValid   false       String expression        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

I did this way   Add this method to check whether email address is valid or not   private boolean isValidEmailId String email        return Pattern compile        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      matcher email  matches             Now check with String of EditText    if isValidEmailId edtEmailId getText   toString   trim        Toast makeText getApplicationContext     Valid Email Address    Toast LENGTH SHORT  show     else           Toast makeText getApplicationContext     InValid Email Address    Toast LENGTH SHORT  show        Done

User · Answer

Try this  if   emailRegistration matches  quot  a-zA-Z0-9  -    a-z     a-z   quot       editTextEmail setError  quot Invalid Email Address quot

[android] Email Address Validation in Android on EditText

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