Question

Possible Duplicate:
Email validation on textField in iPhone sdk

I have an app in which I want to get the user’s email address as input. I want to check that the user has entered email address properly; like @ should be in the text in the field. How can I do this?

textField.text=@"[e-mail]"

If the text box has this value then OK otherwise it should alert that email address should be correct

Answer 1

Try this

NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; 
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx]; 
    if  ([emailTest evaluateWithObject:m_CtrlTxtFld_Email.text] != YES && [m_CtrlTxtFld_Email.text length]!=0)
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Please enter valid email address" message:@"" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
        [alert release];
        return;
    }