Shouldn't there be a way to resize the frame of a UIView after you've added subviews so that the frame is the size needed to enclose all the subviews? If your subviews are added dynamically how can you determine what size the frame of the container view needs to be? This doesn't work:
[myView sizeToFit];
Whatever module that dynamically added all these subviews had to know where to put them (so they relate properly, or so they don't overlap, etc.) Once you know that, plus the size of the current view, plus the size of the subview, you have all you need to determine if the enclosing view needs to be modified.
[myView sizeToFit];
Should work, why don't you check the CGRect before and after?