document custom back button behavior

[vonovak]

hi! documenting the android back button behavior.

In my app, I once also tried to do custom handling of back button while a drawer is open. Unfortunately, my event listeners were not called (react-navigation was swallowing the events) and I had to work around that in a different way, which is why this is not documented.

Let me know if this looks good :)

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[brentvatne]

In my app, I once also tried to do custom handling of back button while a drawer is open. Unfortunately, my event listeners were not called (react-navigation was swallowing the events) and I had to work around that in a different way, which is why this is not documented.

this is exactly why i want to document this! we should be very upfront about the issues faced by our current implementations. by putting them in the open, people at least know that the approach they are using isn't great and maybe come up with ideas for how to improve, but also it gives us more motivation and shared knowledge that we need to improve.

does the doc cover this bug / odd behavior?

[vonovak]

@brentvatne fair point. The docs currently does not cover this, afaik. I will add it to this page.