Hello, I need to show timers (something like "3 mi...

# compose

[Benjamin Deroche]

Hello, I need to show timers (something like "3 minutes ago") inside complex elements inside a LazyColumn. What's the best way to refresh those timers every minute? Do I need to run one background task that will refresh all the LazyColumn view tree? Or run a background task for every single LazyColumn elements that will only refresh the Text view showing the timer?

[chanjungskim]

just use coroutine.

[orangy]

I’d use one mutable state for current time that is updated once a minute and then use derived state calculating relative time right where it is needed. I believe this should limit recompositions to a minimum needed.

[Casey Brooks]

Here’s an example of how I’ve done it before. Anytime you want to update the UI with the current time, read the value of LocalTimer.current within a ProvideTime { } block.