Also it seems that now in `alpha07` tapping a selected botto

Question

Also it seems that now in `alpha07` tapping a selected bottom nav item again does nothing anymore Isn t the expected behavior to reload that screen or am I wrong If it isn t how can I achieve this behavior

Ian Lake · Answer

In a reactive UI where your UI is entirely driven by data and state what state do you expect to be changed when you aren t changing what your current tab is

Florian · Answer

well I was expecting the call to `navigate` to do something

Florian · Answer

so how would you go about telling a bottom nav destination that it has been reselected

Florian · Answer

passing down lambdas is probably not good

Colton Idle · Answer

State isn t changing though so it seems to work as I d expect it IMO

Ian Lake · Answer

Generally you d pass down a Channel Channel backed Flow for a your refreshEvents that a destination could LaunchedEffect+collect on and trigger your behavior You d just need to keep track of which tab is selected and use that to swap between your reselection behavior sending an event to your Channel vs triggering a NavController swap between back stacks

Ian Lake · Answer

You still have the main problem of what does refresh mean in a reactive UI based app since the whole point is that your UI is always up to date with the latest state

Florian · Answer

< Ian Lake> what I mean by reload is starting back at the top of a list

Florian · Answer

now I m getting your initial question

Florian · Answer

< Ian Lake> instead of keeping track of the current destination in a variable could I check If the current destination matches the target route in the onClick method of the BottomNavigationItem

Ian Lake · Answer

Well each bottom nav stack could have many destinations on it so the current destination isn t necessarily the one you d associate with your BottomNavigationItem

Florian · Answer

< Ian Lake> right forgot about that

Florian · Answer

< Ian Lake> but don t I usually only care about the start destination of a bottom nav item on reselection

Florian · Answer

i e if I m not currently on that destination navigate back to it

Florian · Answer

if I m on that destination scroll up

Ian Lake · Answer

That would be entirely up to you You re the one writing the code so you could have your onClick or your collection of refreshEvents do different things based on whatever logic you want

Florian · Answer

ok thank you

Florian · Answer

so inside the onClick method I put a value into the channel

Florian · Answer

and then I pass that channel down to the Composables that need to react to reselection

Florian · Answer

I guess 1 channel is enough since the active destination will consume the value