What are best practices for validating email addre

Question

What is the cleanest way to validate an email address that a user enters on iOS 2.0?

NOTE: This is a historical question that is specific to iOS 2.0 and due to its age and how many other questions are linked to it it cannot be retired and MUST NOT be changed to a "modern" question.

Answer 1

// Method Call
NSString *email = @"Your Email string..";

BOOL temp = [self validateEmail:email];

if(temp)
{
// Valid
}
else
{
// Not Valid
}
// Method description

- (BOOL) validateEmail: (NSString *) email {
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    BOOL isValid = [emailTest evaluateWithObject:email];
    return isValid;
}