diff --git a/quickstep/res/layout-sw600dp-land/allset_navigation_and_hint.xml b/quickstep/res/layout-sw600dp-land/allset_navigation_and_hint.xml
deleted file mode 100644
index 3bfa6da..0000000
--- a/quickstep/res/layout-sw600dp-land/allset_navigation_and_hint.xml
+++ /dev/null
@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2022 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<merge xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <TextView
-        android:id="@+id/navigation_settings"
-        style="@style/TextAppearance.GestureTutorial.LinkText"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
-        android:background="?android:attr/selectableItemBackground"
-        android:minHeight="48dp"
-        android:text="@string/allset_navigation_settings"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/subtitle" />
-
-    <TextView
-        android:id="@+id/hint"
-        style="@style/TextAppearance.GestureTutorial.Feedback.Subtitle"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/allset_page_margin_bottom"
-        android:text="@string/allset_hint"
-        android:textSize="@dimen/allset_page_swipe_up_text_size"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent" />
-
-</merge>
\ No newline at end of file
diff --git a/quickstep/res/layout-sw600dp/allset_navigation_and_hint.xml b/quickstep/res/layout-sw600dp/allset_navigation_and_hint.xml
index 9559072..44b3ecb 100644
--- a/quickstep/res/layout-sw600dp/allset_navigation_and_hint.xml
+++ b/quickstep/res/layout-sw600dp/allset_navigation_and_hint.xml
@@ -21,12 +21,11 @@
         style="@style/TextAppearance.GestureTutorial.LinkText"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="96dp"
+        android:layout_marginTop="24dp"
         android:background="?android:attr/selectableItemBackground"
         android:minHeight="48dp"
         android:text="@string/allset_navigation_settings"
-        app:layout_constraintBottom_toTopOf="@id/hint"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/subtitle"
         app:layout_constraintStart_toStartOf="parent" />
 
     <TextView
@@ -34,7 +33,7 @@
         style="@style/TextAppearance.GestureTutorial.Feedback.Subtitle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/allset_page_margin_bottom"
+        android:layout_marginBottom="24dp"
         android:text="@string/allset_hint"
         android:textSize="@dimen/allset_page_swipe_up_text_size"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/quickstep/res/values-sw600dp-land/dimens.xml b/quickstep/res/values-sw600dp-land/dimens.xml
index 5507fcf..dc10c24 100644
--- a/quickstep/res/values-sw600dp-land/dimens.xml
+++ b/quickstep/res/values-sw600dp-land/dimens.xml
@@ -20,6 +20,5 @@
 
     <!-- All Set page -->
     <dimen name="allset_page_margin_horizontal">48dp</dimen>
-    <dimen name="allset_page_margin_bottom">24dp</dimen>
 
 </resources>
diff --git a/quickstep/res/values-sw600dp/dimens.xml b/quickstep/res/values-sw600dp/dimens.xml
index c96ad11..5899814 100644
--- a/quickstep/res/values-sw600dp/dimens.xml
+++ b/quickstep/res/values-sw600dp/dimens.xml
@@ -36,7 +36,6 @@
 
     <!-- All Set page -->
     <dimen name="allset_page_margin_horizontal">120dp</dimen>
-    <dimen name="allset_page_margin_bottom">24dp</dimen>
     <dimen name="allset_page_allset_text_size">38sp</dimen>
     <dimen name="allset_page_swipe_up_text_size">15sp</dimen>
 
diff --git a/quickstep/res/values-sw720dp-land/dimens.xml b/quickstep/res/values-sw720dp-land/dimens.xml
index 4bc8bf3..02d1189 100644
--- a/quickstep/res/values-sw720dp-land/dimens.xml
+++ b/quickstep/res/values-sw720dp-land/dimens.xml
@@ -17,7 +17,4 @@
 <resources>
     <!--  Overview actions  -->
     <dimen name="overview_actions_top_margin">20dp</dimen>
-
-    <!-- All Set page-->
-    <dimen name="allset_page_margin_bottom">24dp</dimen>
 </resources>
diff --git a/quickstep/res/values-sw720dp/dimens.xml b/quickstep/res/values-sw720dp/dimens.xml
index a84b939..585f01e 100644
--- a/quickstep/res/values-sw720dp/dimens.xml
+++ b/quickstep/res/values-sw720dp/dimens.xml
@@ -35,7 +35,6 @@
     <dimen name="overview_grid_side_margin">64dp</dimen>
 
     <!-- All Set page-->
-    <dimen name="allset_page_margin_bottom">0dp</dimen>
     <dimen name="allset_page_allset_text_size">42sp</dimen>
     <dimen name="allset_page_swipe_up_text_size">16sp</dimen>
 </resources>
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 6e3fd32..cd60879 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -202,7 +202,6 @@
 
     <!-- All Set page -->
     <dimen name="allset_page_margin_horizontal">40dp</dimen>
-    <dimen name="allset_page_margin_bottom">0dp</dimen>
     <dimen name="allset_page_allset_text_size">36sp</dimen>
     <dimen name="allset_page_swipe_up_text_size">14sp</dimen>
 
diff --git a/quickstep/res/values/styles.xml b/quickstep/res/values/styles.xml
index 868d38b..4f0fdf1 100644
--- a/quickstep/res/values/styles.xml
+++ b/quickstep/res/values/styles.xml
@@ -152,6 +152,8 @@
         <item name="android:background">@drawable/bg_overview_clear_all_button</item>
         <item name="android:minWidth">96dp</item>
         <item name="android:minHeight">48dp</item>
+        <item name="android:paddingStart">12dp</item>
+        <item name="android:paddingEnd">12dp</item>
         <item name="android:stateListAnimator">@null</item>
     </style>
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
index 08ed60d..df867cb 100644
--- a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
@@ -41,8 +41,7 @@
                     animateToRecentsState(toState);
 
                     // Handle tapping on live tile.
-                    RecentsView recentsView = mRecentsActivity.getOverviewPanel();
-                    recentsView.setTaskLaunchListener(toState == RecentsState.DEFAULT
+                    getRecentsView().setTaskLaunchListener(toState == RecentsState.DEFAULT
                             ? (() -> animateToRecentsState(RecentsState.BACKGROUND_APP)) : null);
                 }
             };
@@ -88,4 +87,9 @@
             anim.start();
         }
     }
+
+    @Override
+    public RecentsView getRecentsView() {
+        return mRecentsActivity.getOverviewPanel();
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 174f97f..beab56c 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -47,6 +47,7 @@
 import com.android.launcher3.util.OnboardingPrefs;
 import com.android.quickstep.AnimatedFloat;
 import com.android.quickstep.RecentsAnimationCallbacks;
+import com.android.quickstep.views.RecentsView;
 
 import java.io.PrintWriter;
 import java.util.Arrays;
@@ -391,4 +392,9 @@
 
         mTaskbarLauncherStateController.dumpLogs(prefix + "\t", pw);
     }
+
+    @Override
+    public RecentsView getRecentsView() {
+        return mLauncher.getOverviewPanel();
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 3c9e96f..9175226 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -91,6 +91,7 @@
 import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
+import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.rotation.RotationButtonController;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
@@ -133,6 +134,7 @@
     private final boolean mIsUserSetupComplete;
     private final boolean mIsNavBarForceVisible;
     private final boolean mIsNavBarKidsMode;
+
     private boolean mIsDestroyed = false;
     // The flag to know if the window is excluded from magnification region computation.
     private boolean mIsExcludeFromMagnificationRegion = false;
@@ -757,42 +759,63 @@
             if (info.isDisabled()) {
                 ItemClickHandler.handleDisabledItemClicked(info, this);
             } else {
-                Intent intent = new Intent(info.getIntent())
-                        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                try {
-                    if (mIsSafeModeEnabled && !PackageManagerHelper.isSystemApp(this, intent)) {
-                        Toast.makeText(this, R.string.safemode_shortcut_error,
-                                Toast.LENGTH_SHORT).show();
-                    } else  if (info.isPromise()) {
-                        TestLogging.recordEvent(
-                                TestProtocol.SEQUENCE_MAIN, "start: taskbarPromiseIcon");
-                        intent = new PackageManagerHelper(this)
-                                .getMarketIntent(info.getTargetPackage())
-                                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                        startActivity(intent);
+                TaskbarUIController taskbarUIController = mControllers.uiController;
+                RecentsView recents = taskbarUIController.getRecentsView();
+                if (recents != null
+                        && taskbarUIController.getRecentsView().isSplitSelectionActive()) {
+                    // If we are selecting a second app for split, launch the split tasks
+                    taskbarUIController.triggerSecondAppForSplit(info, info.intent, view);
+                } else {
+                    // Else launch the selected task
+                    Intent intent = new Intent(info.getIntent())
+                            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    try {
+                        if (mIsSafeModeEnabled && !PackageManagerHelper.isSystemApp(this, intent)) {
+                            Toast.makeText(this, R.string.safemode_shortcut_error,
+                                    Toast.LENGTH_SHORT).show();
+                        } else if (info.isPromise()) {
+                            TestLogging.recordEvent(
+                                    TestProtocol.SEQUENCE_MAIN, "start: taskbarPromiseIcon");
+                            intent = new PackageManagerHelper(this)
+                                    .getMarketIntent(info.getTargetPackage())
+                                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                            startActivity(intent);
 
-                    } else if (info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
-                        TestLogging.recordEvent(
-                                TestProtocol.SEQUENCE_MAIN, "start: taskbarDeepShortcut");
-                        String id = info.getDeepShortcutId();
-                        String packageName = intent.getPackage();
-                        getSystemService(LauncherApps.class)
-                                .startShortcut(packageName, id, null, null, info.user);
-                    } else {
-                        startItemInfoActivity(info);
+                        } else if (info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
+                            TestLogging.recordEvent(
+                                    TestProtocol.SEQUENCE_MAIN, "start: taskbarDeepShortcut");
+                            String id = info.getDeepShortcutId();
+                            String packageName = intent.getPackage();
+                            getSystemService(LauncherApps.class)
+                                    .startShortcut(packageName, id, null, null, info.user);
+                        } else {
+                            startItemInfoActivity(info);
+                        }
+
+                        mControllers.uiController.onTaskbarIconLaunched(info);
+                    } catch (NullPointerException
+                            | ActivityNotFoundException
+                            | SecurityException e) {
+                        Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT)
+                                .show();
+                        Log.e(TAG, "Unable to launch. tag=" + info + " intent=" + intent, e);
                     }
-
-                    mControllers.uiController.onTaskbarIconLaunched(info);
-                    mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
-                } catch (NullPointerException | ActivityNotFoundException | SecurityException e) {
-                    Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT)
-                            .show();
-                    Log.e(TAG, "Unable to launch. tag=" + info + " intent=" + intent, e);
                 }
+                mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
             }
         } else if (tag instanceof AppInfo) {
-            startItemInfoActivity((AppInfo) tag);
-            mControllers.uiController.onTaskbarIconLaunched((AppInfo) tag);
+            AppInfo info = (AppInfo) tag;
+            TaskbarUIController taskbarUIController = mControllers.uiController;
+            RecentsView recents = taskbarUIController.getRecentsView();
+            if (recents != null
+                    && taskbarUIController.getRecentsView().isSplitSelectionActive()) {
+                // If we are selecting a second app for split, launch the split tasks
+                taskbarUIController.triggerSecondAppForSplit(info, info.intent, view);
+            } else {
+                // Else launch the selected task
+                startItemInfoActivity((AppInfo) tag);
+                mControllers.uiController.onTaskbarIconLaunched((AppInfo) tag);
+            }
             mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
         } else {
             Log.e(TAG, "Unknown type clicked: " + tag);
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
index 1014cb6..4ec9b41 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
@@ -15,13 +15,18 @@
  */
 package com.android.launcher3.taskbar;
 
+import android.content.Intent;
+import android.graphics.drawable.BitmapDrawable;
 import android.view.MotionEvent;
 import android.view.View;
 
 import androidx.annotation.CallSuper;
+import androidx.annotation.Nullable;
 
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.ItemInfoWithIcon;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
 
 import java.io.PrintWriter;
 import java.util.stream.Stream;
@@ -135,4 +140,38 @@
                 prefix,
                 getClass().getSimpleName()));
     }
+
+    /**
+     * Returns RecentsView. Overwritten in LauncherTaskbarUIController and
+     * FallbackTaskbarUIController with Launcher-specific implementations. Returns null for other
+     * UI controllers (like DesktopTaskbarUIController) that don't have a RecentsView.
+     */
+    public @Nullable RecentsView getRecentsView() {
+        return null;
+    }
+
+    /**
+     * Uses the clicked Taskbar icon to launch a second app for splitscreen.
+     */
+    public void triggerSecondAppForSplit(ItemInfoWithIcon info, Intent intent, View startingView) {
+        RecentsView recents = getRecentsView();
+        TaskView foundTaskView = recents.getTaskViewByComponentName(info.getTargetComponent());
+        if (foundTaskView != null) {
+            recents.confirmSplitSelect(
+                    foundTaskView,
+                    foundTaskView.getTask(),
+                    foundTaskView.getIconView().getDrawable(),
+                    foundTaskView.getThumbnail(),
+                    foundTaskView.getThumbnail().getThumbnail(),
+                    /* intent */ null);
+        } else {
+            recents.confirmSplitSelect(
+                    /* containerTaskView */ null,
+                    /* task */ null,
+                    new BitmapDrawable(info.bitmap.icon),
+                    startingView,
+                    /* thumbnail */ null,
+                    intent);
+        }
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
index 5c37da1..b476c12 100644
--- a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
+++ b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
@@ -322,7 +322,7 @@
             boolean isRtlEnabled = !mIsRecentsRtl;
             mPositionHelper.updateThumbnailMatrix(
                     mThumbnailPosition, mThumbnailData, mTaskRect.width(), mTaskRect.height(),
-                    mDp.widthPx, mDp.taskbarSize, mDp.isTablet,
+                    mDp.widthPx, mDp.heightPx, mDp.taskbarSize, mDp.isTablet,
                     mOrientationState.getRecentsActivityRotation(), isRtlEnabled);
             mPositionHelper.getMatrix().invert(mInversePositionMatrix);
             if (DEBUG) {
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 47374e0..6286374 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -74,9 +74,12 @@
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.WindowConfiguration;
+import android.content.ComponentName;
 import android.content.Context;
+import android.content.Intent;
 import android.content.LocusId;
 import android.content.res.Configuration;
+import android.graphics.Bitmap;
 import android.graphics.BlendMode;
 import android.graphics.Canvas;
 import android.graphics.Color;
@@ -662,8 +665,6 @@
     private TaskView mSecondSplitHiddenView;
     @Nullable
     private SplitBounds mSplitBoundsConfig;
-    private final Toast mSplitToast = Toast.makeText(getContext(),
-            R.string.toast_split_select_app, Toast.LENGTH_SHORT);
     private final Toast mSplitUnsupportedToast = Toast.makeText(getContext(),
             R.string.toast_split_app_unsupported, Toast.LENGTH_SHORT);
 
@@ -1213,6 +1214,21 @@
         return null;
     }
 
+    /**
+     * Returns a {@link TaskView} that has ComponentName matching {@code componentName} or null if
+     * no match.
+     */
+    @Nullable
+    public TaskView getTaskViewByComponentName(ComponentName componentName) {
+        for (int i = 0; i < getTaskViewCount(); i++) {
+            TaskView taskView = requireTaskViewAt(i);
+            if (taskView.getTask().key.sourceComponent.equals(componentName)) {
+                return taskView;
+            }
+        }
+        return null;
+    }
+
     public void setOverviewStateEnabled(boolean enabled) {
         mOverviewStateEnabled = enabled;
         updateTaskStackListenerState();
@@ -4237,24 +4253,39 @@
      * Confirms the selection of the next split task. The extra data is passed through because the
      * user may be selecting a subtask in a group.
      *
+     * @param containerTaskView If our second selected app is currently running in Recents, this is
+     *                          the "container" TaskView from Recents. If we are starting a fresh
+     *                          instance of the app from an Intent, this will be null.
+     * @param task The Task corresponding to our second selected app. If we are starting a fresh
+     *             instance of the app from an Intent, this will be null.
+     * @param drawable The Drawable corresponding to our second selected app's icon.
+     * @param secondView The View representing the current space on the screen where the second app
+     *                   is (either the ThumbnailView or the tapped icon).
+     * @param intent If we are launching a fresh instance of the app, this is the Intent for it. If
+     *               the second app is already running in Recents, this will be null.
      * @return true if waiting for confirmation of second app or if split animations are running,
      *          false otherwise
      */
-    public boolean confirmSplitSelect(TaskView containerTaskView, Task task, IconView iconView,
-            TaskThumbnailView thumbnailView) {
+    public boolean confirmSplitSelect(TaskView containerTaskView, Task task, Drawable drawable,
+            View secondView, @Nullable Bitmap thumbnail, Intent intent) {
         if (canLaunchFullscreenTask()) {
             return false;
         }
         if (mSplitSelectStateController.isBothSplitAppsConfirmed()) {
             return true;
         }
-        mSplitToast.cancel();
-        if (!task.isDockable) {
-            // Task not split screen supported
-            mSplitUnsupportedToast.show();
-            return true;
+        // Second task is selected either as an already-running Task or an Intent
+        if (task != null) {
+            if (!task.isDockable) {
+                // Task does not support split screen
+                mSplitUnsupportedToast.show();
+                return true;
+            }
+            mSplitSelectStateController.setSecondTask(task);
+        } else {
+            mSplitSelectStateController.setSecondTask(intent);
         }
-        mSplitSelectStateController.setSecondTask(task);
+
         RectF secondTaskStartingBounds = new RectF();
         Rect secondTaskEndingBounds = new Rect();
         // TODO(194414938) starting bounds seem slightly off, investigate
@@ -4281,9 +4312,9 @@
                 false /* fadeWithThumbnail */, true /* isStagedTask */);
 
         safeRemoveDragLayerView(mSecondFloatingTaskView);
-        mSecondFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity,
-                thumbnailView, thumbnailView.getThumbnail(),
-                iconView.getDrawable(), secondTaskStartingBounds);
+
+        mSecondFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity, secondView,
+                thumbnail, drawable, secondTaskStartingBounds);
         mSecondFloatingTaskView.setAlpha(1);
         mSecondFloatingTaskView.addConfirmAnimation(pendingAnimation, secondTaskStartingBounds,
                 secondTaskEndingBounds, true /* fadeWithThumbnail */, false /* isStagedTask */);
@@ -4299,7 +4330,9 @@
         });
 
         mSecondSplitHiddenView = containerTaskView;
-        mSecondSplitHiddenView.setThumbnailVisibility(INVISIBLE);
+        if (mSecondSplitHiddenView != null) {
+            mSecondSplitHiddenView.setThumbnailVisibility(INVISIBLE);
+        }
 
         InteractionJankMonitorWrapper.begin(this,
                 InteractionJankMonitorWrapper.CUJ_SPLIT_SCREEN_ENTER, "Second tile selected");
diff --git a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
index 6792dc5..904c944 100644
--- a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -473,8 +473,8 @@
             boolean isRtl = getLayoutDirection() == LAYOUT_DIRECTION_RTL;
             DeviceProfile dp = mActivity.getDeviceProfile();
             mPreviewPositionHelper.updateThumbnailMatrix(mPreviewRect, mThumbnailData,
-                    getMeasuredWidth(), getMeasuredHeight(), dp.widthPx, dp.taskbarSize,
-                    dp.isTablet, currentRotation, isRtl);
+                    getMeasuredWidth(), getMeasuredHeight(), dp.widthPx, dp.heightPx,
+                    dp.taskbarSize, dp.isTablet, currentRotation, isRtl);
 
             mBitmapShader.setLocalMatrix(mPreviewPositionHelper.getMatrix());
             mPaint.setShader(mBitmapShader);
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 527a0d1..583771e 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -621,7 +621,8 @@
         TaskIdAttributeContainer container = mTaskIdAttributeContainer[index];
         if (container != null) {
             return getRecentsView().confirmSplitSelect(this, container.getTask(),
-                    container.getIconView(), container.getThumbnailView());
+                    container.getIconView().getDrawable(), container.getThumbnailView(),
+                    container.getThumbnailView().getThumbnail(), /* intent */ null);
         }
         return false;
     }
diff --git a/quickstep/tests/src/com/android/quickstep/FullscreenDrawParamsTest.kt b/quickstep/tests/src/com/android/quickstep/FullscreenDrawParamsTest.kt
index 4785350..963da27 100644
--- a/quickstep/tests/src/com/android/quickstep/FullscreenDrawParamsTest.kt
+++ b/quickstep/tests/src/com/android/quickstep/FullscreenDrawParamsTest.kt
@@ -57,7 +57,7 @@
         val isRtl = false
 
         mPreviewPositionHelper.updateThumbnailMatrix(previewRect, mThumbnailData, canvasWidth,
-                canvasHeight, dp.widthPx, dp.taskbarSize, dp.isTablet, currentRotation,
+                canvasHeight, dp.widthPx, dp.heightPx, dp.taskbarSize, dp.isTablet, currentRotation,
                 isRtl)
         params.setProgress(/* fullscreenProgress= */ 1.0f, /* parentScale= */ 1.0f,
                 /* taskViewScale= */ 1.0f,  /* previewWidth= */ 0, dp, mPreviewPositionHelper)
@@ -78,7 +78,7 @@
         val isRtl = false
 
         mPreviewPositionHelper.updateThumbnailMatrix(previewRect, mThumbnailData, canvasWidth,
-                canvasHeight, dp.widthPx, dp.taskbarSize, dp.isTablet, currentRotation,
+                canvasHeight, dp.widthPx, dp.heightPx, dp.taskbarSize, dp.isTablet, currentRotation,
                 isRtl)
         params.setProgress(/* fullscreenProgress= */ 1.0f, /* parentScale= */ 1.0f,
                 /* taskViewScale= */ 1.0f,  /* previewWidth= */ 0, dp, mPreviewPositionHelper)
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 0c6f340..ca92aa4 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -324,6 +324,11 @@
         return displayOption.grid.name;
     }
 
+    @VisibleForTesting
+    public static String getDefaultGridName(Context context) {
+        return new InvariantDeviceProfile().initGrid(context, null);
+    }
+
     private void initGrid(Context context, Info displayInfo, DisplayOption displayOption,
             @DeviceType int deviceType) {
         DisplayMetrics metrics = context.getResources().getDisplayMetrics();
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index f70511a..a507532 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -521,6 +521,11 @@
         return (int) (dp * Resources.getSystem().getDisplayMetrics().density);
     }
 
+    /** Converts a dp value to pixels for a certain density. */
+    public static int dpToPx(float dp, int densityDpi) {
+        float densityRatio = (float) densityDpi / DisplayMetrics.DENSITY_DEFAULT;
+        return (int) (dp * densityRatio);
+    }
 
     public static int pxFromSp(float size, DisplayMetrics metrics) {
         return pxFromSp(size, metrics, 1f);
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index af689dc..78e17d8 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -585,7 +585,6 @@
     @Override
     public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
             SplitBounds splitInfo, int desiredStagePosition) {
-        boolean isLandscape = dp.isLandscape;
         float topLeftTaskPercent = splitInfo.appsStackedVertically
                 ? splitInfo.topTaskPercent
                 : splitInfo.leftTaskPercent;
@@ -593,18 +592,24 @@
                 ? splitInfo.dividerHeightPercent
                 : splitInfo.dividerWidthPercent;
 
+        int deviceHeightWithoutTaskbar = dp.availableHeightPx - dp.taskbarSize;
+        float scale = (float) outRect.height() / deviceHeightWithoutTaskbar;
+        float topTaskHeight = dp.availableHeightPx * topLeftTaskPercent;
+        float scaledTopTaskHeight = topTaskHeight * scale;
+        float dividerHeight = dp.availableHeightPx * dividerBarPercent;
+        float scaledDividerHeight = dividerHeight * scale;
+
         if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
-            if (isLandscape) {
-                outRect.right = outRect.left + Math.round(outRect.width() * topLeftTaskPercent);
+            if (splitInfo.appsStackedVertically) {
+                outRect.bottom = Math.round(outRect.top + scaledTopTaskHeight);
             } else {
-                outRect.bottom = outRect.top + Math.round(outRect.height() * topLeftTaskPercent);
+                outRect.right = outRect.left + Math.round(outRect.width() * topLeftTaskPercent);
             }
         } else {
-            if (isLandscape) {
-                outRect.left += Math.round(outRect.width()
-                        * (topLeftTaskPercent + dividerBarPercent));
+            if (splitInfo.appsStackedVertically) {
+                outRect.top += Math.round(scaledTopTaskHeight + scaledDividerHeight);
             } else {
-                outRect.top += Math.round(outRect.height()
+                outRect.left += Math.round(outRect.width()
                         * (topLeftTaskPercent + dividerBarPercent));
             }
         }
@@ -617,7 +622,7 @@
         int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
         int totalThumbnailHeight = parentHeight - spaceAboveSnapshot;
         int dividerBar = Math.round(splitBoundsConfig.appsStackedVertically
-                ? splitBoundsConfig.dividerHeightPercent * totalThumbnailHeight
+                ? splitBoundsConfig.dividerHeightPercent * dp.availableHeightPx
                 : splitBoundsConfig.dividerWidthPercent * parentWidth);
         int primarySnapshotHeight;
         int primarySnapshotWidth;
@@ -641,12 +646,18 @@
             }
             secondarySnapshot.setTranslationY(spaceAboveSnapshot);
         } else {
+            int deviceHeightWithoutTaskbar = dp.availableHeightPx - dp.taskbarSize;
+            float scale = (float) totalThumbnailHeight / deviceHeightWithoutTaskbar;
+            float topTaskHeight = dp.availableHeightPx * taskPercent;
+            float finalDividerHeight = dividerBar * scale;
+            float scaledTopTaskHeight = topTaskHeight * scale;
             primarySnapshotWidth = parentWidth;
-            primarySnapshotHeight = Math.round(totalThumbnailHeight * taskPercent);
+            primarySnapshotHeight = Math.round(scaledTopTaskHeight);
 
             secondarySnapshotWidth = parentWidth;
-            secondarySnapshotHeight = totalThumbnailHeight - primarySnapshotHeight - dividerBar;
-            int translationY = primarySnapshotHeight + spaceAboveSnapshot + dividerBar;
+            secondarySnapshotHeight = Math.round(totalThumbnailHeight - primarySnapshotHeight
+                    - finalDividerHeight);
+            float translationY = primarySnapshotHeight + spaceAboveSnapshot + finalDividerHeight;
             secondarySnapshot.setTranslationY(translationY);
 
             FrameLayout.LayoutParams primaryParams =