Email validation only when field is not blank in Android

Question

Validate email format only if EditText is not blank in Android. And if the field is blank validation should not be check. I did not find any solution in this scenario which is useful for me.

I can help but first show your effort here, as what you have done yet — Vickyexpert, Jul 19 '16 at 05:55

score 1 · Accepted Answer · answered Jul 19 '16 at 05:55

Try this code

final EditText emailEditTxt= (EditText)findViewById(R.id.text); 

String emailStr = emailEditTxt.getText().toString().trim();

if(emailStr!=null)

if(emailStr.length()>=1){

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


if (emailStr .matches(emailPattern))
{
Toast.makeText(getApplicationContext(),"valid email address",Toast.LENGTH_SHORT).show();
}
else 
{
Toast.makeText(getApplicationContext(),"Invalid email address", Toast.LENGTH_SHORT).show();
}
}

score 1 · Answer 2 · answered Jul 19 '16 at 05:57

Try this..

boolean flag;
String pass = editText.getText().toString().trim();
if(!pass.equals("")) {
    flag = isEmailValid(pass);
}

public static boolean isEmailValid(CharSequence email) {
    return Patterns.EMAIL_ADDRESS.matcher(email).matches();
}

and use the flag value for further use

score 0 · Answer 3 · answered Jul 19 '16 at 05:55

0

Use this method for check email pattern is valid or not

public static boolean isEmailValid(CharSequence email) {
        return Patterns.EMAIL_ADDRESS.matcher(email).matches();
    }

answered Jul 19 '16 at 05:55

Nitesh Pareek

362
2
10

score 0 · Answer 4 · answered Jul 19 '16 at 05:56

validateEmail

private boolean validateEmail() {
 if (!edemail.getText().toString().trim().isEmpty()&&!ValidationMethod.emailValidation(edemail.getText().toString()))
    {

        input_layout_email.setError("Invalid Email"); // Your textInput Layout or other set your error on edittext email
        requestFocus(edemail);
        return false;
    }

    else {
        input_layout_email.setErrorEnabled(false);
    }

    return true;
}

   // if you need requestfocus other wise remove
 private void requestFocus(View view) {
    if (view.requestFocus()) {
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
    }
}

ValidationMethod.java // put in your project

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

public class ValidationMethod {

    static Matcher m;
    static String emailExpression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,20}$";
    static Pattern emailPattern = Pattern.compile(emailExpression, Pattern.CASE_INSENSITIVE);
    static String passwordExpression ="((?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\\W).{8,20})";
    static Pattern passwordPattern=Pattern.compile(passwordExpression);

    public static boolean emailValidation(String s)
    {
        if( s == null)
        {
            return false; 
        }
        else
        {
            m = emailPattern.matcher(s);
            return m.matches();
        }
    }

    public static boolean passwordValidation(String s)
    {
        if( s == null)
        {
            return false; 
        }
        else
        {
            m = passwordPattern.matcher(s);
            return m.matches();
        }
    }

    public static boolean emailValidation2(String s)
    {
        m = emailPattern.matcher(s);
        return m.matches();
    }
}

score 0 · Answer 5 · answered Jul 19 '16 at 05:59

0

try This

<form>
    <lable for="userEmail">Email : </label>
    <input type="email" id="userEmail" placeholder="johndoe@example.com" required="required">
<form>

answered Jul 19 '16 at 05:59

Sachithra Dilshan

95
5

Dishant Anand · Answer 6 · 2016-07-19T06:35:33.173

0

Lets say you have declared EditText like this.

EditText emailField;

then in your method

emailField = (EditText)view.getViewById(R.id.NAME_OF_FIELD_IN_XML);
if(!TextUtils.isBlank(emailField.getText().toString())){
     //validate your email address
}

Use below link for email validation code.

http://stackoverflow.com/questions/12947620/email-address-validation-in-android-on-edittext

edited Jul 19 '16 at 06:35

answered Jul 19 '16 at 05:59

Dishant Anand

362
1
14

score 0 · Answer 7 · answered Oct 26 '17 at 09:51

You can try this for validation.

    public boolean Email_validation(String CorpId)
{
    String regExpn =
            "^(([\\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})$";

    CharSequence inputStr = CorpId;

    Pattern pattern = Pattern.compile(regExpn, Pattern.CASE_INSENSITIVE);
    Matcher matcher = pattern.matcher(inputStr);

    if(matcher.matches())
        return true;
    else
        return false;
}

Email validation only when field is not blank in Android

7 Answers7