Added working binding for a "new" button that works in the list layout.

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

@@ -45,6 +45,7 @@ import org.schabi.newpipe.local.subscription.dialog.FeedGroupReorderDialog
 import org.schabi.newpipe.local.subscription.item.ChannelItem
 import org.schabi.newpipe.local.subscription.item.EmptyPlaceholderItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupAddItem
+import org.schabi.newpipe.local.subscription.item.FeedGroupAddItemVertical
 import org.schabi.newpipe.local.subscription.item.FeedGroupCardItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupCardVerticalItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupCarouselItem
@@ -306,16 +307,16 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     private fun changeLayout() {
         listView = true
         Section().apply {
-            val carouselAdapter2 = GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>()
+            val carouselAdapter = GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>()
 
-            carouselAdapter2.add(FeedGroupCardVerticalItem(-1, getString(R.string.all), FeedGroupIcon.RSS))
+            carouselAdapter.add(FeedGroupCardVerticalItem(-1, getString(R.string.all), FeedGroupIcon.RSS))
-            carouselAdapter2.add(feedGroupsSection)
+            carouselAdapter.add(feedGroupsSection)
-            carouselAdapter2.add(FeedGroupAddItem())
+            carouselAdapter.add(FeedGroupAddItemVertical())
 
-            carouselAdapter2.setOnItemClickListener { item, _ ->
+            carouselAdapter.setOnItemClickListener { item, _ ->
                 listenerFeedVerticalGroups.selected(item)
             }
-            carouselAdapter2.setOnItemLongClickListener { item, _ ->
+            carouselAdapter.setOnItemLongClickListener { item, _ ->
                 if (item is FeedGroupCardVerticalItem) {
                     if (item.groupId == FeedGroupEntity.GROUP_ALL_ID) {
                         return@setOnItemLongClickListener false
@@ -324,7 +325,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
                 listenerFeedVerticalGroups.held(item)
                 return@setOnItemLongClickListener true
             }
-            feedGroupsCarousel = FeedGroupCarouselItem(requireContext(), carouselAdapter2, RecyclerView.VERTICAL)
+            feedGroupsCarousel = FeedGroupCarouselItem(requireContext(), carouselAdapter, RecyclerView.VERTICAL)
 
             feedGroupsSortMenuItem = HeaderWithMenuItem(
                 getString(R.string.feed_groups_header_title),
@@ -360,7 +361,6 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
         }
         binding.itemsList.adapter = groupAdapter
 
-        // TODO: change viewModel or create another one
         viewModel = ViewModelProvider(this).get(SubscriptionViewModel::class.java)
         viewModel.stateLiveData.observe(viewLifecycleOwner) { it?.let(this::handleResult) }
         viewModel.feedGroupsLiveData.observe(viewLifecycleOwner) { it?.let(this::handleFeedGroups) }
@@ -427,7 +427,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
         override fun selected(selectedItem: Item<*>?) {
             when (selectedItem) {
                 is FeedGroupCardVerticalItem -> NavigationHelper.openFeedFragment(fm, selectedItem.groupId, selectedItem.name)
-                is FeedGroupAddItem -> FeedGroupDialog.newInstance().show(fm, null)
+                is FeedGroupAddItemVertical -> FeedGroupDialog.newInstance().show(fm, null)
             }
         }
 

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

@@ -0,0 +1,12 @@
+package org.schabi.newpipe.local.subscription.item
+
+import android.view.View
+import com.xwray.groupie.viewbinding.BindableItem
+import org.schabi.newpipe.R
+import org.schabi.newpipe.databinding.FeedGroupAddNewItemVerticalBinding
+
+class FeedGroupAddItemVertical : BindableItem<FeedGroupAddNewItemVerticalBinding>() {
+    override fun getLayout(): Int = R.layout.feed_group_add_new_item_vertical
+    override fun bind(viewBinding: FeedGroupAddNewItemVerticalBinding, position: Int) {}
+    override fun initializeViewBinding(view: View) = FeedGroupAddNewItemVerticalBinding.bind(view)
+}

app/src/main/res/layout/feed_group_add_new_item_vertical.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="388dp"
+    android:layout_height="48dp"
+    android:layout_gravity="center_vertical"
+    android:clickable="true"
+    android:focusable="true"
+    android:foreground="?attr/selectableItemBackground"
+    app:cardBackgroundColor="?attr/card_item_background_color">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="?attr/dashed_border"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="4dp">
+
+        <ImageView
+            android:id="@+id/icon"
+            android:layout_width="14dp"
+            android:layout_height="14dp"
+            android:layout_gravity="center"
+            android:scaleType="centerInside"
+            android:src="@drawable/ic_add"
+            tools:ignore="ContentDescription" />
+
+        <org.schabi.newpipe.views.NewPipeTextView
+            android:id="@+id/title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="2dp"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:maxLines="1"
+            android:text="@string/feed_create_new_group_button_title"
+            android:textAllCaps="true"
+            android:textColor="?attr/colorAccent"
+            android:textSize="10sp"
+            android:textStyle="bold"
+            tools:ignore="SmallSp" />
+    </LinearLayout>
+</androidx.cardview.widget.CardView>