diff --git a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.kt b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.kt
index cca8bf8..04e1905 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.kt
+++ b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.kt
@@ -27,17 +27,16 @@
 import com.android.launcher3.anim.AnimatorListeners.forSuccessCallback
 import com.android.launcher3.anim.PendingAnimation
 import com.android.launcher3.anim.PropertySetter
-import com.android.launcher3.logging.StatsLogManager.LauncherEvent
 import com.android.launcher3.statemanager.StateManager.StateHandler
 import com.android.launcher3.states.StateAnimationConfig
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_ACTIONS_FADE
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_FADE
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_MODAL
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SCALE
-import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SPLIT_SELECT_INSTRUCTIONS_FADE
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_X
 import com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y
 import com.android.launcher3.states.StateAnimationConfig.SKIP_OVERVIEW
+import com.android.launcher3.util.MultiPropertyFactory.MULTI_PROPERTY_VALUE
 import com.android.quickstep.util.AnimUtils
 import com.android.quickstep.views.ClearAllButton
 import com.android.quickstep.views.RecentsView
@@ -226,8 +225,8 @@
         builder: PendingAnimation,
         animate: Boolean,
     ) {
-        val goingToOverviewFromWorkspaceContextual = toState == LauncherState.OVERVIEW &&
-                launcher.isSplitSelectionActive
+        val goingToOverviewFromWorkspaceContextual =
+            toState == LauncherState.OVERVIEW && launcher.isSplitSelectionActive
         if (
             toState != LauncherState.OVERVIEW_SPLIT_SELECT &&
                 !goingToOverviewFromWorkspaceContextual
@@ -302,6 +301,14 @@
             overviewButtonAlpha,
             config.getInterpolator(ANIM_OVERVIEW_ACTIONS_FADE, LINEAR),
         )
+        recentsView.addDeskButton?.let {
+            propertySetter.setFloat(
+                it.visibilityAlphaProperty,
+                MULTI_PROPERTY_VALUE,
+                if (state.areElementsVisible(launcher, LauncherState.ADD_DESK_BUTTON)) 1f else 0f,
+                LINEAR,
+            )
+        }
     }
 
     private fun getOverviewInterpolator(fromState: LauncherState, toState: LauncherState) =
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
index ca388c6..b1196af 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
@@ -77,7 +77,8 @@
         return super.getVisibleElements(launcher)
                 & ~OVERVIEW_ACTIONS
                 & ~CLEAR_ALL_BUTTON
-                & ~VERTICAL_SWIPE_INDICATOR;
+                & ~VERTICAL_SWIPE_INDICATOR
+                & ~ADD_DESK_BUTTON;
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
index 80fc5fa..0c0b4fd 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
@@ -45,7 +45,7 @@
 
     @Override
     public int getVisibleElements(Launcher launcher) {
-        return OVERVIEW_ACTIONS | CLEAR_ALL_BUTTON;
+        return OVERVIEW_ACTIONS;
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
index 15216fe..5fdedcc 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -110,7 +110,7 @@
 
     @Override
     public int getVisibleElements(Launcher launcher) {
-        int elements = CLEAR_ALL_BUTTON | OVERVIEW_ACTIONS;
+        int elements = CLEAR_ALL_BUTTON | OVERVIEW_ACTIONS | ADD_DESK_BUTTON;
         DeviceProfile dp = launcher.getDeviceProfile();
         boolean showFloatingSearch;
         if (dp.isPhone) {
@@ -124,7 +124,7 @@
             elements |= FLOATING_SEARCH_BAR;
         }
         if (launcher.isSplitSelectionActive()) {
-            elements &= ~CLEAR_ALL_BUTTON;
+            elements &= ~CLEAR_ALL_BUTTON & ~ADD_DESK_BUTTON;
         }
         return elements;
     }
diff --git a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
index 56dd696..537092f 100644
--- a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
+++ b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
@@ -26,6 +26,7 @@
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_SCRIM_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_OVERVIEW;
+import static com.android.launcher3.util.MultiPropertyFactory.MULTI_PROPERTY_VALUE;
 import static com.android.quickstep.fallback.RecentsState.OVERVIEW_SPLIT_SELECT;
 import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_HORIZONTAL_OFFSET;
 import static com.android.quickstep.views.RecentsView.DESKTOP_CAROUSEL_DETACH_PROGRESS;
@@ -99,6 +100,11 @@
         float clearAllButtonAlpha = state.hasClearAllButton() ? 1 : 0;
         setter.setFloat(mRecentsView.getClearAllButton(), ClearAllButton.VISIBILITY_ALPHA,
                 clearAllButtonAlpha, LINEAR);
+        if (mRecentsView.getAddDeskButton() != null) {
+            float addDeskButtonAlpha = state.hasAddDeskButton() ? 1 : 0;
+            setter.setFloat(mRecentsView.getAddDeskButton().getVisibilityAlphaProperty(),
+                    MULTI_PROPERTY_VALUE, addDeskButtonAlpha, LINEAR);
+        }
         float overviewButtonAlpha = state.hasOverviewActions() ? 1 : 0;
         setter.setFloat(mRecentsViewContainer.getActionsView().getVisibilityAlpha(),
                 AnimatedFloat.VALUE, overviewButtonAlpha, LINEAR);
diff --git a/quickstep/src/com/android/quickstep/fallback/RecentsState.java b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
index f27b60c..f722c5d 100644
--- a/quickstep/src/com/android/quickstep/fallback/RecentsState.java
+++ b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
@@ -45,14 +45,16 @@
     private static final int FLAG_RECENTS_VIEW_VISIBLE = BaseState.getFlag(7);
     private static final int FLAG_TASK_THUMBNAIL_SPLASH = BaseState.getFlag(8);
     private static final int FLAG_DETACH_DESKTOP_CAROUSEL = BaseState.getFlag(9);
+    private static final int FLAG_ADD_DESK_BUTTON = BaseState.getFlag(10);
 
     private static final RecentsState[] sAllStates = new RecentsState[6];
 
     public static final RecentsState DEFAULT = new RecentsState(0,
             FLAG_DISABLE_RESTORE | FLAG_CLEAR_ALL_BUTTON | FLAG_OVERVIEW_ACTIONS | FLAG_SHOW_AS_GRID
-                    | FLAG_SCRIM | FLAG_LIVE_TILE | FLAG_RECENTS_VIEW_VISIBLE);
+                    | FLAG_SCRIM | FLAG_LIVE_TILE | FLAG_RECENTS_VIEW_VISIBLE
+                    | FLAG_ADD_DESK_BUTTON);
     public static final RecentsState MODAL_TASK = new ModalState(1,
-            FLAG_DISABLE_RESTORE | FLAG_CLEAR_ALL_BUTTON | FLAG_OVERVIEW_ACTIONS | FLAG_MODAL
+            FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_ACTIONS | FLAG_MODAL
                     | FLAG_SHOW_AS_GRID | FLAG_SCRIM | FLAG_LIVE_TILE | FLAG_RECENTS_VIEW_VISIBLE);
     public static final RecentsState BACKGROUND_APP = new BackgroundAppState(2,
             FLAG_DISABLE_RESTORE | FLAG_NON_INTERACTIVE | FLAG_FULL_SCREEN
@@ -122,6 +124,13 @@
     }
 
     /**
+     * For this state, whether add desk button should be shown.
+     */
+    public boolean hasAddDeskButton() {
+        return hasFlag(FLAG_ADD_DESK_BUTTON);
+    }
+
+    /**
      * For this state, whether overview actions should be shown.
      */
     public boolean hasOverviewActions() {
diff --git a/quickstep/src/com/android/quickstep/views/AddDesktopButton.kt b/quickstep/src/com/android/quickstep/views/AddDesktopButton.kt
index 9943770..244c3b2 100644
--- a/quickstep/src/com/android/quickstep/views/AddDesktopButton.kt
+++ b/quickstep/src/com/android/quickstep/views/AddDesktopButton.kt
@@ -20,10 +20,12 @@
 import android.graphics.Canvas
 import android.graphics.Rect
 import android.util.AttributeSet
+import android.view.View
 import android.widget.ImageButton
 import com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X
 import com.android.launcher3.R
 import com.android.launcher3.util.MultiPropertyFactory
+import com.android.launcher3.util.MultiValueAlpha
 import com.android.quickstep.util.BorderAnimator
 import com.android.quickstep.util.BorderAnimator.Companion.createSimpleBorderAnimator
 
@@ -34,6 +36,22 @@
 class AddDesktopButton @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
     ImageButton(context, attrs) {
 
+    private enum class Alpha {
+        CONTENT,
+        VISIBILITY,
+    }
+
+    private val addDeskButtonAlpha = MultiValueAlpha(this, Alpha.entries.size)
+
+    var contentAlpha
+        set(value) {
+            addDeskButtonAlpha.get(Alpha.CONTENT.ordinal).value = value
+        }
+        get() = addDeskButtonAlpha.get(Alpha.CONTENT.ordinal).value
+
+    val visibilityAlphaProperty: MultiPropertyFactory<View>.MultiProperty
+        get() = addDeskButtonAlpha.get(Alpha.VISIBILITY.ordinal)
+
     private enum class TranslationX {
         GRID,
         OFFSET,
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index d17dfb8..6b91df1 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -4762,9 +4762,8 @@
         }
         mClearAllButton.setContentAlpha(mContentAlpha);
 
-        // TODO(b/389209338): Handle the visibility of the `mAddDesktopButton`.
         if (mAddDesktopButton != null) {
-            mAddDesktopButton.setAlpha(mContentAlpha);
+            mAddDesktopButton.setContentAlpha(mContentAlpha);
         }
         int alphaInt = Math.round(alpha * 255);
         mEmptyMessagePaint.setAlpha(alphaInt);
@@ -6329,6 +6328,11 @@
         return mClearAllButton;
     }
 
+    @Nullable
+    public AddDesktopButton getAddDeskButton() {
+        return mAddDesktopButton;
+    }
+
     /**
      * @return How many pixels the running task is offset on the currently laid out dominant axis.
      */
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 8c6555e..78ad04b 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -70,6 +70,7 @@
     public static final int WORKSPACE_PAGE_INDICATOR = 1 << 5;
     public static final int SPLIT_PLACHOLDER_VIEW = 1 << 6;
     public static final int FLOATING_SEARCH_BAR = 1 << 7;
+    public static final int ADD_DESK_BUTTON = 1 << 8;
 
     // Flag indicating workspace has multiple pages visible.
     public static final int FLAG_MULTI_PAGE = BaseState.getFlag(0);