

- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How should I validate an e-mail address in Android?
This example demonstrates how do I validate an email address in android.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?> <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" android:padding="8dp" tools:context=".MainActivity"> <EditText android:layout_centerInParent="true" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Enter Email Address" android:id="@+id/editText"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:layout_below="@id/editText" android:layout_marginTop="5dp" android:text="Validate" android:onClick="Validate"/> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity.java
import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends AppCompatActivity { EditText editText; String email; String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText = findViewById(R.id.editText); email = editText.getText().toString().trim(); } public void Validate(View view) { 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(); } } }
Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −
Click here to download the project code.
- Related Questions & Answers
- How should I validate an e-mail address in Android using Kotlin?.
- How to get the Android device's primary e-mail address?
- How to hide e-mail address from an unauthorized user in JavaScript?
- What is an Electronic Mail (E-Mail)?
- Sending an HTML e-mail using Python
- Sending Attachments as an E-mail using Python
- How to validate an email address in PHP ?
- How to validate an email address in C#?
- C Program to validate an IP address
- How to validate Email Address in Android on EditText using Kotlin?
- How can I validate EditText input in Android?
- Validate IP Address in C#
- Validate Email address in Java
- Validate IP Address in C++
- Validate IP Address in Python