Summary: This allows for the iOS-style navigation bar on Android and vice versa in order to simplify design. It is entirely optional in that NavigationBars will continue to defauly to their platform-specific style, but you can override it with the `navigationStyles` prop:
```js
<Navigator.NavigationBar
navigationStyles={Navigator.NavigationBar.StylesIOS}
/>
```
Fixes#2995.
Closes https://github.com/facebook/react-native/pull/3028
Reviewed By: @svcscm
Differential Revision: D2527902
Pulled By: @ericvicenti
fb-gh-sync-id: c7b1bfac200b5e03fc0d9dfb8acc8b916c825595
Summary: The component will crash if the prop is not provided. This helps with a better
error message in the console output.
Closes https://github.com/facebook/react-native/pull/2894
Reviewed By: @svcscm
Differential Revision: D2461752
Pulled By: @ericvicenti
Summary:
idStack is going away soon. This removes all references to it. Looking at the internal state of navigator will make you have a bad time.
The biggest change is switching to the new component-freezing techinique in the navigation bars. This way we avoid dependence on the idStack to provide a scalar ID for each route.
Huang Yu
James Ide
Jan Kassens
Martin Konicek
Eric Vicenti
Philipp von Weitershausen