[Android] the Android Back Button does not work

[JustinMi]

Most Android phones have a universal "magic" back button that roughly takes you to the previous thing you were looking at. It does not work as expected in the Android app. For example, if you log in, search a store, select the store, then hit the Android back button, you'd expect to be taken back to the search screen. But instead, it takes you to the login page.

[JustinMi]

Also, in general, you shouldn't be able to hit back and go to the login screen ^

[wangannie]

Note: requires converting MapScreen to a functional component to use useFocusEffecthook https://reactnavigation.org/docs/custom-android-back-button-handling/