Separate Back Stack for each tab in BottomNavigationView Android using Fragments

Question

I\'m implementing BottomNavigationView for navigation in an Android app. I am using Fragments to set the content for each tab.

I know how to set up one

Answer 1

Suppose you have 5(A, B, C, D, E) BottomNavigationView menu item, then in Activity create 5 FrameLayout(frmlytA, frmlytB, frmlytC, frmlytD, frmlytE) in parallel overlapping manner as the container for each of these menu items. When BottomNavigation Menu item A is pressed then hide all the other FrameLayouts(Visibility = GONE) and just show(Visibility = VISIBLE) the FrameLayout 'frmlytA' which will host the FragmentA and over this container do the further transactions like (FragmentA -> FragmentX -> FragmentY). And then If user clicks BottomNavigation Menu item B then just hide this(frmlytA) container and show 'frmlytB'. Then if user again presses the menu item A then show 'frmlytA' it should retain the earlier state. So, like this you can switch between the container FrameLayouts and can maintain the back stack of each container.