I want to show native view inside/(at the end of view) my flutter view. Thinking of hide native view while I push to other flutter view. To hide native I am setting it's height to zero, by calling a function through flutter channel, but the animation to set the height is not smooth as it should be, please check my attached attached video and POC code.

In iOS I had edited the default storyboard like this screenshot, taken a main storyboard with two container views flutterviewcontroller and nativeViewController respectively.