Status Update
Comments
pe...@gmail.com <pe...@gmail.com> #2
Can you attach a sample project that reproduces your issue?
ap...@google.com <ap...@google.com> #3
I'm experiencing this issue in a commercial non-open source project so I'd have to provide extracted code fragments. The menu file for instance looks similar to this:
<menu>
<item
android:id="@+id/destination_one" />
<item
android:id="@+id/destination_two" />
<item
android:id="@+id/destination_three" />
<item
android:id="@+id/destination_four" />
</menu>
The menu item ids match the top level destination ids as for instance destination_one as required by the NavigationUI library.
The xml layout file of the main activity (there is only one activity) looks pretty much like this:
<androidx.coordinatorlayout.widget.CoordinatorLayout>
<androidx.constraintlayout.widget.ConstraintLayout>
<androidx.fragment.app.FragmentContainerView
android:id="@+id/navigation_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
app:defaultNavHost="true"
app:layout_constraintBottom_toTopOf="@id/bottom_navigation"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="@navigation/main_navigation" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/navigation_host_fragment"
app:menu="@menu/main_menu" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
The main_navigation
is the first navigation graph I posted in the original post. The behavior I described above only affects the first bottomNavigation item which corresponds to the top level navGraph's startDestination.
jb...@google.com <jb...@google.com> #4
Yeah, what we're looking for is a full project (i.e., take a brand new project in Android Studio, put your few bits of code in, and make sure your problem reproduces) as there are a lot of little pieces that can make a difference here.
ap...@google.com <ap...@google.com> #5
Of course the logic of my project is more sophisticated but this reproduces the issue quite well. If you click the first BottomNavigation item N times you need N+1 system back navigation triggers to leave the app.
Description
Android Gradle Plugin deprecated the see bug ). The replacement API ( reflection was used . That is only a short term solution, and when AGP
getApplicationIdTextResource()
API on the classBaseVariant
in version4.1.0
(onVariantProperties
) did not work properly for feature libraries, so to avoid the deprecation warning,4.2.0
is stable we should update to that version and remove the reflection immediately.