:thinking_face: Did recomposing on `Configuration`...

# compose

[merono]

🤔 Did recomposing on Configuration changes stop working recently? That’s what it seems like when I use the code snippet below and specify android:configChanges="uiMode" in my manifest.

MaterialTheme(
    colors = if (isSystemInDarkTheme()) darkColors() else lightColors()
) {
    Box(
        Modifier.size(48.dp),
        backgroundColor = MaterialTheme.colors.onBackground
    )
}

The color of the Box doesn’t change when I toggle dark mode on my device (pixel 3), but I feel like it did on an older version of compose. The color does get updated correctly if I kill the app and re-open it. I’m seeing this behavior on alpha01 and dev17, using API 29.

I also tried similar things by using ConfigurationAmbient.current directly, and saw the same behavior. When debugging the app, I was able to see AndroidComposeView.onConfigurationChanged get called with the new Configuration though.

[Louis Pullen-Freilich [G]]

This should still work, if you have a project that reproduces this could you file a bug?

[merono]

@Louis Pullen-Freilich [G] filed the bug here: https://issuetracker.google.com/issues/166667488

[Louis Pullen-Freilich [G]]

Pretty strange, I tried using a recent snapshot build, and it seems to work - so I guess something must have fixed this since alpha01 release, not sure what.

If you use the snapshot build (
add

maven { url '<https://androidx.dev/snapshots/builds/6798052/artifacts/ui/repository>' }

inside the

allProjects {
    repositories {

block, and then change the version to be: compose_version = '1.0.0-SNAPSHOT'
)

Does this then work correctly for you on your setup?

[merono]

I just tried using the snapshot build and it worked for me too. Thanks!

[merono]

So I guess it would be fixed in either alpha02 or alpha03?

[Louis Pullen-Freilich [G]]

Yup looks like it should be fixed in alpha02