Pattern
String validemail = "[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}" +")+";
MainActivity.Java
package raj.sujeet.com.emailidvalidation;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MainActivity extends AppCompatActivity {
EditText et_email;
Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_email=(EditText)findViewById(R.id.email);
btn=(Button)findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String validemail = "[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}" +
")+";
String email = et_email.getText().toString();
Matcher matcher= Pattern.compile(validemail).matcher(email);
if (matcher.matches()){
Toast.makeText(getApplicationContext(),"True",Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(getApplicationContext(),"Enter Valid Email-Id",Toast.LENGTH_LONG).show();
}
}
});
}
}
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MainActivity extends AppCompatActivity {
EditText et_email;
Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_email=(EditText)findViewById(R.id.email);
btn=(Button)findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String validemail = "[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}" +
")+";
String email = et_email.getText().toString();
Matcher matcher= Pattern.compile(validemail).matcher(email);
if (matcher.matches()){
Toast.makeText(getApplicationContext(),"True",Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(getApplicationContext(),"Enter Valid Email-Id",Toast.LENGTH_LONG).show();
}
}
});
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="raj.sujeet.com.emailidvalidation.MainActivity">
<EditText
android:id="@+id/email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:hint="Email-ID"
android:inputType="textEmailAddress"
/>
<Button
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="Submit"/>
</LinearLayout>
