IssueTracker

Jetpack Compose version: BOM 2023.10.01 , compiler 1.5.6
Jetpack Compose component(s) used: N/A
Android Studio Build: N/A
Kotlin version: 1.9.21

Steps to Reproduce or Code Sample to Reproduce:

1. In the activity, pass "locale" in the list of configChanges in the manifest
2. Read the locale using ConfigurationCompat.getLocales(LocalConfiguration.current).get(0) in composition
3. Change the language using AppCompatDelegate.setApplicationLocales(LocaleListCompat.forLanguageTags("languge-tag-here"))
4. Observe that the locale returned from step 2 does not reflect the new language that we changed to.

Possible fixes that have worked for me so far, taken after a discussion here https://slack-chats.kotlinlang.org/t/16178817/does-anyone-have-a-sample-app-with-runtime-locale-changing-a#47c51048-1e62-4f94-83d2-7bd33ec48ecd

1. Simply not adding locale to the list of configChanges in the manifest, which is optimally not where I'd like to go with a full compose app
2. Pass the config change manually to the composable to let it know about the change since AppCompatDelegate.setApplicationLocales does not do this properly. This is done through

override fun onConfigurationChanged(newConfig: Configuration) {
  super.onConfigurationChanged(newConfig)
  val composeView = window.decorView
    .findViewById<ViewGroup>(android.R.id.content)
    .getChildAt(0) as? ComposeView
  composeView?.dispatchConfigurationChanged(newConfig)
}

as described in the linked kotlinlang slack thread.

Optimally however this should just work out of the box without any of the mentioned workarounds.