Fix inconsistent channel group list and item view mode

Author: Stypox

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -254,7 +254,11 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
 
         viewModel = ViewModelProvider(this)[SubscriptionViewModel::class.java]
         viewModel.stateLiveData.observe(viewLifecycleOwner) { it?.let(this::handleResult) }
-        viewModel.feedGroupsLiveData.observe(viewLifecycleOwner) { it?.let(this::handleFeedGroups) }
+        viewModel.feedGroupsLiveData.observe(viewLifecycleOwner) {
+            it?.let { (groups, listViewMode) ->
+                handleFeedGroups(groups, listViewMode)
+            }
+        }
 
         setupInitialLayout()
     }
@@ -405,24 +409,22 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
         }
     }
 
-    private fun handleFeedGroups(groups: List<Group>) {
-        val listViewMode = viewModel.getListViewMode()
-
+    private fun handleFeedGroups(groups: List<Group>, listViewMode: Boolean) {
         if (feedGroupsCarouselState != null) {
             feedGroupsCarousel.onRestoreInstanceState(feedGroupsCarouselState)
             feedGroupsCarouselState = null
         }
 
-        feedGroupsCarousel.listViewMode = listViewMode
-        feedGroupsSortMenuItem.showSortButton = groups.size > 1
-        feedGroupsSortMenuItem.listViewMode = listViewMode
         binding.itemsList.post {
             if (context == null) {
                 // since this part was posted to the next UI cycle, the fragment might have been
                 // removed in the meantime
                 return@post
             }
 
+            feedGroupsCarousel.listViewMode = listViewMode
+            feedGroupsSortMenuItem.showSortButton = groups.size > 1
+            feedGroupsSortMenuItem.listViewMode = listViewMode
             feedGroupsCarousel.notifyChanged(FeedGroupCarouselItem.PAYLOAD_UPDATE_LIST_VIEW_MODE)
             feedGroupsSortMenuItem.notifyChanged(GroupsHeader.PAYLOAD_UPDATE_ICONS)
 

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionViewModel.kt

@@ -27,9 +27,9 @@ class SubscriptionViewModel(application: Application) : AndroidViewModel(applica
     private val listViewModeFlowable = listViewMode.distinctUntilChanged()
 
     private val mutableStateLiveData = MutableLiveData<SubscriptionState>()
-    private val mutableFeedGroupsLiveData = MutableLiveData<List<Group>>()
+    private val mutableFeedGroupsLiveData = MutableLiveData<Pair<List<Group>, Boolean>>()
     val stateLiveData: LiveData<SubscriptionState> = mutableStateLiveData
-    val feedGroupsLiveData: LiveData<List<Group>> = mutableFeedGroupsLiveData
+    val feedGroupsLiveData: LiveData<Pair<List<Group>, Boolean>> = mutableFeedGroupsLiveData
 
     private var feedGroupItemsDisposable = Flowable
         .combineLatest(
@@ -39,7 +39,10 @@ class SubscriptionViewModel(application: Application) : AndroidViewModel(applica
         )
         .throttleLatest(DEFAULT_THROTTLE_TIMEOUT, TimeUnit.MILLISECONDS)
         .map { (feedGroups, listViewMode) ->
-            feedGroups.map(if (listViewMode) ::FeedGroupCardItem else ::FeedGroupCardGridItem)
+            Pair(
+                feedGroups.map(if (listViewMode) ::FeedGroupCardItem else ::FeedGroupCardGridItem),
+                listViewMode
+            )
         }
         .subscribeOn(Schedulers.io())
         .subscribe(