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Question

I have a containerView with an embedded viewController. Sometimes I need to perform the embed segue again with different sender but I'll get this error:

'There are unexpected subviews in the container view. Perhaps the embed segue has already fired once or a subview was added programmatically?'

Is it possible to to perform a embed segue multiple times or not?!

Answer 1

You just need to make sure to programmatically cleanup the previously embedded view controller as described in the second part of https://stackoverflow.com/a/32166435/1049134 :

   [self.containedViewController willMoveToParentViewController:nil];  
   self.containedViewController.view removeFromSuperView];
   [self.containedViewController removeFromParentViewController];

The next time you trigger your embed segue it will work just like it did the first time.