Android – Validate email address
-
Paresh Mayani
- July 7, 2011
- 1 min read
- 6 Comments
Problem: How to validate email address in android?
Solution:
EmailValidationActivity.java
package com.technotalkative.emailvalidation;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class EmailValidationActivity extends Activity {
/** Called when the activity is first created. */
EditText editTextEmail;
String strEmailAddress;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
editTextEmail = (EditText) findViewById(R.id.editTextEmail);
}
String regEx =
"^(([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})$";
public void btnValidateEmailAddress(View v)
{
strEmailAddress = editTextEmail.getText().toString().trim();
Matcher matcherObj = Pattern.compile(regEx).matcher(strEmailAddress);
if (matcherObj.matches()) {
Toast.makeText(v.getContext(), strEmailAddress+" is valid", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(v.getContext(), strEmailAddress+" is InValid", Toast.LENGTH_SHORT).show();
}
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<EditText
android:layout_height="100dp"
android:layout_width="match_parent"
android:id="@+id/editTextEmail"
android:inputType="textEmailAddress"
android:gravity="top">
</EditText>
<Button
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:text="Validate Email address"
android:onClick="btnValidateEmailAddress"
android:id="@+id/btnValidateEmail">
</Button>
</LinearLayout>
