title: Combine UIAlertViewStyleLoginAndPasswordInput with UIKeyboardTypeEmailAddress
body: <p>Is there any way of displaying a <code>UIAlertView</code> with Login/Password text fields, so that the keyboard type is of type <code>UIKeyboardTypeEmailAddress</code>?</p>
  
  <p>I use a <code>UIAlertView</code> as follows:</p>
  
  <pre><code>var alertView = new UIAlertView("Login".Translate(), "", null, "Cancel".Translate(), "Login".Translate());
  alertView.AlertViewStyle = UIAlertViewStyle.LoginAndPasswordInput;
  </code></pre>
  
  <p>or, in Objective-C:</p>
  
  <pre><code>UIAlertView *alertView = [[UIAlertView alloc]
                            initWithTitle:@"Title"
                            message:@"Message"
                            delegate:self
                            cancelButtonTitle:@"Cancel"
                            otherButtonTitles:@"Login", nil];
  [alertView setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];
  </code></pre>
  
  <p>but all user names of my app are e-mail addresses, so I'd like to have the keyboard of the login textfield as an e-mail address keyboard, i.e. a <code>UIKeyboardTypeEmailAddress</code>.</p>
  
  <p>Any ideas?</p>