Anyone have a SystemUiController fork that they li...

# compose-android

[Colton Idle]

Anyone have a SystemUiController fork that they like? I can copy the code into my codebase, but i almost always rather use a community supported lib if possible. I think all I ever really need SystemUiController for is to switch system bar icons from light to dark and back again.

[eygraber]

I ended up not using anything from the library. I used activity.enableEdgeToEdge from the androidx activity library and that covered my use cases for drawing under the status and nav bars + coloring them

[Stylianos Gakis]

Does enableEdgeToEdge not fill your requirements here?

[Albert Chang]

All you need is this:

val windowInsetsController: WindowInsetsControllerCompat?
    @Composable get() {
        val view = LocalView.current
        return remember(view) {
            view.context.findWindow()?.let { WindowCompat.getInsetsController(it, view) }
        }
    }

private tailrec fun Context.findWindow(): Window? =
    when (this) {
        is Activity -> window
        is ContextWrapper -> baseContext.findWindow()
        else -> null
    }

And use it like this:

val controller = windowInsetsController
SideEffect {
    controller?.isAppearanceLightStatusBars = !darkTheme
}

[Francesc]

check the NIA app https://github.com/android/nowinandroid/blob/5f5bd91a686a414007c9ce3c7acb26d2b0bd2[…]ain/kotlin/com/google/samples/apps/nowinandroid/MainActivity.kt

[Colton Idle]

Thanks everyone. I've been out of the compose game for like ~2 months or so due to some family stuff so I wasn't sure if there was something obvious I missed. let me try this out. I wonder if enableEdgeToEdge finally made it to stable!

[Colton Idle]

Also, i wonder if theres room for a kmp compose lib for this. not sure what ios does for status bar colors, etc.

[Albert Chang]

Unless I'm missing something, enableEdgeToEdge can only help you set up edge to edge, and you still need to change status bar appearance yourself if you are disabling activity recreation.

[Colton Idle]

Hm. What does activity recreation have to do with status bar appearance?

[Albert Chang]

If you are specifying uiMode in android:configChanges, the activity won’t be recreated when dark mode changes, and status bar icon color won’t change automatically.

[Francesc]

this is what the NIA app does, after setting edge to edge

DisposableEffect(darkTheme) {
                enableEdgeToEdge(
                    statusBarStyle = SystemBarStyle.auto(
                        android.graphics.Color.TRANSPARENT,
                        android.graphics.Color.TRANSPARENT,
                    ) { darkTheme },
                    navigationBarStyle = SystemBarStyle.auto(
                        lightScrim,
                        darkScrim,
                    ) { darkTheme },
                )
                onDispose {}
            }

https://github.com/android/nowinandroid/blob/5f5bd91a686a414007c9ce3c7acb26d2b0bd2[…]ain/kotlin/com/google/samples/apps/nowinandroid/MainActivity.kt

[Albert Chang]

Yeah you can use that if you want to also set navigation bar color, but if all you want is to set status bar icon color, my snippet is enough (and the findWindow part is not needed if you put it in an activity class like NIA does).

[Colton Idle]

cant wait until we hit some api level where all of this is handled for us. lol

[Colton Idle]

i forget when the auto color change for system bars was introduced 😄