title: Get current frame of UIView while animated
body: <p>I have a UIView and I want to get it's current frame while it's animated.
  I am using a basic animation:</p>
  
  <pre><code>[UIView beginAnimations:@"MoveView" context:nil];
  [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
  [UIView setAnimationDuration:3];
  _testView.frame = CGRectMake(0, 100, 40, 40);
  [UIView commitAnimations];
  </code></pre>
  
  <p>and I have a button which should add another UIView at the current position of the first one while animated, but when I press the button, it adds it to the end position of the animation...
  Any suggestions? 
  Thank you in advance!</p>