Merge pull request #3216 from element-hq/feature/bma/forceDarkTheme

Ensure that the manual dark theme is rendering correctly regarding -night resource and keyboard

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/ElementThemeApp.kt

@@ -16,7 +16,9 @@
 
 package io.element.android.libraries.designsystem.theme
 
+import androidx.appcompat.app.AppCompatDelegate
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
@@ -29,6 +31,9 @@ import io.element.android.libraries.preferences.api.store.AppPreferencesStore
 /**
  * Theme to use for all the regular screens of the application.
  * Will manage the light / dark theme based on the user preference.
+ * Will also ensure that the system is applying the correct global theme
+ * to the application, especially when the system is light and the application
+ * is forced to use dark theme.
  */
 @Composable
 fun ElementThemeApp(
@@ -39,6 +44,15 @@ fun ElementThemeApp(
         appPreferencesStore.getThemeFlow().mapToTheme()
     }
         .collectAsState(initial = Theme.System)
+    LaunchedEffect(theme) {
+        AppCompatDelegate.setDefaultNightMode(
+            when (theme) {
+                Theme.System -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+                Theme.Light -> AppCompatDelegate.MODE_NIGHT_NO
+                Theme.Dark -> AppCompatDelegate.MODE_NIGHT_YES
+            }
+        )
+    }
     ElementTheme(
         darkTheme = theme.isDark(),
         content = content,