fix minor theme issue

Author: theScrabi

new-player/src/main/java/net/newpipe/newplayer/ui/NewPlayerUI.kt

@@ -71,6 +71,11 @@ private const val TAG = "VideoPlayerUI"
  * or views are hidden and only NewPlayerUI is visible. You can read more about this in
  * the [NewPlayerViewModel], since the [viewModel] is responsible to tell your UI how to behave
  * in such cases.
+ *
+ * @param viewModel the NewPlayerViewModel that should control this NewPlayerUi.
+ * @param lightColorScheme is the color scheme used by non video ui related composables, when the system is in light mode.
+ * @param darkColorScheme is the color scheme used by the video ui related composables, and the rest of the ui if the system is in dark mode.
+ * @param the typography used by NewPlayer
  */
 @OptIn(UnstableApi::class)
 @Composable

new-player/src/main/java/net/newpipe/newplayer/ui/audioplayer/AudioPlayerEmbeddedUI.kt

@@ -119,7 +119,7 @@ internal fun AudioPlayerEmbeddedUI(viewModel: InternalNewPlayerViewModel, uiStat
                         top = 0.5.dp,
                         bottom = 0.5.dp
                     ),
-                    color = MaterialTheme.colorScheme.onBackground,
+                    color = MaterialTheme.colorScheme.onPrimary,
                     text = getTimeStringFromMs(
                         uiState.durationInMs,
                         locale,

test-app/src/main/java/net/newpipe/newplayer/testapp/MainActivity.kt

@@ -131,14 +131,14 @@ class MainActivity : AppCompatActivity() {
                         removeSystemInsets()
                         binding.embeddedPlayer.viewModel = null
                         binding.fullscreenPlayer.viewModel = newPlayerViewModel
-                        binding.buttonsLayout.visibility = View.GONE
+                        binding.buttonsLayout!!.visibility = View.GONE
                         binding.embeddedPlayerLayout.visibility = View.GONE
                         binding.fullscreenPlayer.visibility = View.VISIBLE
                     } else {
                         addSystemInsets()
                         binding.fullscreenPlayer.viewModel = null
                         binding.embeddedPlayer.viewModel = newPlayerViewModel
-                        binding.buttonsLayout.visibility = View.VISIBLE
+                        binding.buttonsLayout!!.visibility = View.VISIBLE
                         binding.embeddedPlayerLayout.visibility = View.VISIBLE
                         binding.fullscreenPlayer.visibility = View.GONE
                     }