Well, you can use a common abstraction for elements that make sense on both platforms and have platform-specific components that does exactly what you want and

Well, you can use a common abstraction for elements that make sense on both platforms and have platform-specific components that does exactly what you want and that you will use only in one version. If the wrapper doesn't do what you want, you can still write that portion in native or write your own wrapper with an underlying implementation that does exactly what you want.