With the below code we can validate email address in android.
import android.os.Bundle
import android.view.View
import android.widget.EditText
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
private lateinit var editText: EditText
private lateinit var email: String
private val emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "KotlinApp"
editText = findViewById(R.id.editText)
email = editText.text.toString().trim()
}
fun validateEmail(view: View?) {
if (email.matches(emailPattern.toRegex())) {
Toast.makeText(applicationContext, "Valid email address",
Toast.LENGTH_SHORT).show()
} else {
Toast.makeText(applicationContext, "Invalid email address",
Toast.LENGTH_SHORT).show()
}
}
}
Invoke-customs are only supported starting with android 0 --min-api 26
What is Context?
Emulator: emulator: ERROR: Can't find 'Linux version ' string in kernel image file: Andr
How to stop EditText focus at Activity startup in Android?
How to check Android version?
Fix Error: Use JsonReader.setLenient(true) for Malformed JSON
What is ANR in android?
How to convert DP to Pixel and Pixel to Dp?
How do i load image from drawable folder in Jetpack Compose?
Explain Fragment Life Cycle
Fix Android Emulator Kill Error When Running Your App
How to get complete address from latitude and longitude?
What is Intent? What is the difference between an implicit intent and an explicit intent?
How do I check in SQLite whether a table exists?
Fix Duplicate Files in APK Build.gradle Issue - RRutors
Check List for Generate Signed APK Android
How to install/ uninstall apk by command line ADB
What is "shared preferences" in Android ?
What is the difference between match_parent and fill_parent?
How to get screen size (width,height) in Android?
How to save activity State in Android?
FragmentPagerAdapter deprecated, Since API 27.1.0 FragmentPagerAdapter is deprecated.
What is the Different Between val and var in Kotlin?
Permission denied for window type 2010 in Marshmallow device
INSTALL_FAILED_INVALID_APK: Split lib_slice_9_apk was defined multiple times. It is possible that th
What are the notifications available in android?
How to get an image resource by it's name in android?
How to reduce APK package size?
Open PDF in Google Drive with Intent in Android - RRutors
Hide/Disable soft keyboard on Activity launch: Android
How to Exit android app on back pressed?
What happens next when the device switches between portrait and landscape?
Android Studio project R can't find
How to start a new activity on button click
How to Use Deprecated Handler() in Android - RRutors Guide
How to copy database from assets folder in android using kotlin
What is ANR? How to avoid and resolve it?
What is Application?
Fix Play Store Rejection Due to SMS Permission - RRutors
What is NetworkOnMainThread Exception?