only one AppState may make performance issue?

[jiqimaogou]

in the example, there is only one AppState, any ScreeState change make AppState change, and make the top level widget recompute. may this cause performance issue?

[dbaroncelli]

We actually want to trigger a UI layer recomposition (by changing the AppState value) each time there is a change in the ScreenState. On each recomposition, both JetpackCompose and SwiftUI are smart enough to update only the components whose data has changed.
The fact there is only one AppState is actually good for performance, as we require ONLY ONE observable, which is our StateFlow having the AppState as its value.

[jiqimaogou]

ok, thank you so much.