Email validation on textField in iOS

Question

In iOS App, how to add Email validation on UITextField?

Answer 1

--it's easy to validate your email id by calling validateEmail method:

-(BOOL)validateEmail:(NSString *)email      
{
    NSString *emailRegex = @"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?";  

    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];

    return [emailTest evaluateWithObject:email];
}

Verify your email id here....

BOOL eb=[self validateEmail:**youremailtextfield**];

if(!eb)
{
    UIAlertView *alertsuccess = [[UIAlertView alloc] initWithTitle:@"Sorry" message:@"Please enter correct email id"
                                                          delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

    [alertsuccess show];
    [alertsuccess release]; 
}