Is nested routing possible in react-native? - react-native

I am using react-router-native for routing. Usually when ever new route is pushed to history the current screen will be unmounted and new screen is mounted. But As per documentation nested routing is possible in web. They haven't mentioned anything about mobile.
I just want to know if nested routing is possible react-native as I want two routes to be active at a time.
Thank You.

in case of React Native use React navigation https://reactnavigation.org/ and its stack routing in case of mobile development where you mount a new view by navigate() and unmount by goback() to history
ref - https://reactnavigation.org/docs/en/stack-navigator.html

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How to update state of nested components when app receive notifications?

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I have read about redux which will provide common store so state could be updated but I dont want to use that.
I have also read about lifting state up but in my case i have more nested components so I dont want to do that as well.
So suggest me some way to do it?
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tl;dr:
Is there a way to add a dumb/presentational React Native component on the React Navigation stack, so I don't leave the container when pressing the phones back button, but just show the previous component?
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So far I have only used top level navigation with React Navigation, but I have a flow where the user wants to book an appointment at the doctor.
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Warning: in the next major version of React Navigation, to be released in Fall 2018, we will no longer provide any information about how to integrate with Redux and it may cease to work.
In the next version of react-navigation it could be hard to use redux with react-navigation.
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For a task like that we don't need to integrate react-navigation and redux. We just need to use NavigationService.

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