Email validation code ...

  

Email Validation Code...

- (IBAction)signupBtnAction:(id)sender

{

 BOOL emailValid =[self NSStringIsValidEmail:[NSString stringWithFormat:@"%@",self.emailTF.text]];

if (emailValid) {

// proceed for Signup

       }

}

-(BOOL) NSStringIsValidEmail:(NSString *)checkString

{

    BOOL stricterFilter = YES; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/

    NSString *stricterFilterString = @"[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}";

    NSString *laxString = @".+@([A-Za-z0-9]+\\.)+[A-Za-z]{2}[A-Za-z]*";

    NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;

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

    return [emailTest evaluateWithObject:checkString];

}