Bug 1837158 - Media playback should be stopped when the app is destroyed.

app/src/main/java/org/mozilla/fenix/HomeActivity.kt

@@ -49,6 +49,7 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import mozilla.appservices.places.BookmarkRoot
 import mozilla.components.browser.state.action.ContentAction
+import mozilla.components.browser.state.action.MediaSessionAction
 import mozilla.components.browser.state.action.SearchAction
 import mozilla.components.browser.state.search.SearchEngine
 import mozilla.components.browser.state.selector.getNormalOrPrivateTabs
@@ -602,6 +603,7 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
         components.core.pocketStoriesService.stopPeriodicSponsoredStoriesRefresh()
         privateNotificationObserver?.stop()
         components.notificationsDelegate.unBindActivity(this)
+        stopMediaSession()
     }
 
     override fun onConfigurationChanged(newConfig: Configuration) {
@@ -872,6 +874,21 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
         themeManager.applyStatusBarTheme(this)
     }
 
+    // Stop active media when activity is destroyed.
+    private fun stopMediaSession() {
+        components.core.store.state.tabs.forEach {
+            it.mediaSessionState?.controller?.stop()
+        }
+
+        components.core.store.state.findActiveMediaTab()?.let {
+            components.core.store.dispatch(
+                MediaSessionAction.DeactivatedMediaSessionAction(
+                    it.id,
+                ),
+            )
+        }
+    }
+
     /**
      * Returns the [supportActionBar], inflating it if necessary.
      * Everyone should call this instead of supportActionBar.