onBackPress returns on the unexpected page

[YakubenkoAndrii]

Context:

• after first launch the user passes through Onboarding to MainPage
• by onBackPress on MainPage user returns to Onboarding

Issue:

this part of code working only for the next launches after first
NavHost( navController = navController, startDestination = if(shouldShowOnboarding) { Route.WELCOME } else Route.TRACKER_OVERVIEW )

Step to reproduce:

• branches: master / Part25/ImproovingNavigation+BugFix
• fully delete app from device
• install app
• pass onboarding
• call onBackPress on the main page

[cbarrios]

Hi @YakubenkoAndrii,

This can be fixed by implementing the following inside the TrackerOverviewScreen.kt file (you must have a lambda to navigate up). Please put this at the beginning of the body:

BackHandler {
onNavigateUp()
}

...then on MainActivity on your TrackerOverviewScreen composable inside your NavHost:
onNavigateUp = { finish() }