title: UIAlertView - retrieve textfield value from textfield added via code
body: <p>Here is the code I have to create an UIAlertView with a textbox.  </p>
  
  <pre><code>    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Enter A Username Here"     message:@"this gets covered!" 
                                                 delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:@"OK!", nil];   
      UITextField *myTextField = [[UITextField alloc] initWithFrame:CGRectMake(12, 45, 260, 25)];
  
      CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0, 60);
      [alert setTransform:myTransform];
      alert.tag = kAlertSaveScore;
  
      [myTextField setBackgroundColor:[UIColor whiteColor]];
      [alert addSubview:myTextField];
      [alert show];
      [alert release];
      [myTextField release];  
  </code></pre>
  
  <p>My question is, how do I get the value from the textfield in:</p>
  
  <pre><code>- (void) alertView:(UIAlertView *) actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
  
  }
  </code></pre>
  
  <p>I know I can get the standard stuff for the alertview such as actionSheet.tag and such, but how would I get the above created textfield?</p>