diff --git a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
index 5d975b0..e6d06da 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
@@ -18,6 +18,7 @@
 
 import static com.android.launcher3.Utilities.getPrefs;
 import static com.android.quickstep.OverviewInteractionState.KEY_SWIPE_UP_ENABLED;
+import static com.android.launcher3.LauncherState.ALL_APPS;
 
 import android.content.Context;
 import android.content.SharedPreferences;
@@ -29,6 +30,7 @@
 import com.android.quickstep.OverviewInteractionState;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.views.RecentsView;
+import com.android.systemui.shared.system.WindowManagerWrapper;
 
 public class UiFactory {
 
@@ -85,6 +87,14 @@
         }
     }
 
+    public static void onLauncherStateOrResumeChanged(Launcher launcher) {
+        WindowManagerWrapper.getInstance().setShelfHeight(
+                launcher.getStateManager().getState() != ALL_APPS &&
+                        launcher.isUserActive() &&
+                        !launcher.getDeviceProfile().isVerticalBarLayout(),
+                launcher.getDeviceProfile().hotseatBarSizePx);
+    }
+
     public static void onTrimMemory(Context context, int level) {
         RecentsModel model = RecentsModel.getInstance(context);
         if (model != null) {
diff --git a/res/values-land/dimens.xml b/res/values-land/dimens.xml
index 6cf23ad..7b52529 100644
--- a/res/values-land/dimens.xml
+++ b/res/values-land/dimens.xml
@@ -31,9 +31,6 @@
     <dimen name="dynamic_grid_cell_layout_padding">0dp</dimen>
     <dimen name="dynamic_grid_cell_layout_bottom_padding">5.5dp</dimen>
 
-    <!-- Folders -->
-    <dimen name="folder_preview_padding">2dp</dimen>
-
     <!-- Hotseat -->
     <!-- Will be set to equal the hotseat icon size. -->
     <dimen name="dynamic_grid_hotseat_size">0dp</dimen>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index f8f9c2a..a2f7286 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -137,8 +137,6 @@
     <dimen name="spring_loaded_panel_border">1dp</dimen>
 
 <!-- Folders -->
-    <!-- The size of the padding on the preview background drawable -->
-    <dimen name="folder_preview_padding">10dp</dimen>
     <dimen name="page_indicator_dot_size">8dp</dimen>
 
     <dimen name="folder_cell_x_padding">9dp</dimen>
diff --git a/src/com/android/launcher3/BaseActivity.java b/src/com/android/launcher3/BaseActivity.java
index 02d70c4..cf2d79f 100644
--- a/src/com/android/launcher3/BaseActivity.java
+++ b/src/com/android/launcher3/BaseActivity.java
@@ -39,6 +39,7 @@
     protected SystemUiController mSystemUiController;
 
     private boolean mStarted;
+    private boolean mUserActive;
 
     public DeviceProfile getDeviceProfile() {
         return mDeviceProfile;
@@ -85,6 +86,18 @@
     }
 
     @Override
+    protected void onResume() {
+        mUserActive = true;
+        super.onResume();
+    }
+
+    @Override
+    protected void onUserLeaveHint() {
+        mUserActive = false;
+        super.onUserLeaveHint();
+    }
+
+    @Override
     protected void onStop() {
         mStarted = false;
         super.onStop();
@@ -94,6 +107,10 @@
         return mStarted;
     }
 
+    public boolean isUserActive() {
+        return mUserActive;
+    }
+
     public void addOnDeviceProfileChangeListener(OnDeviceProfileChangeListener listener) {
         mDPChangeListeners.add(listener);
     }
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 14d8b93..6f35752 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -28,6 +28,7 @@
 
 import com.android.launcher3.CellLayout.ContainerType;
 import com.android.launcher3.badge.BadgeRenderer;
+import com.android.launcher3.graphics.IconNormalizer;
 
 public class DeviceProfile {
 
@@ -81,9 +82,8 @@
     public int workspaceCellPaddingXPx;
 
     // Folder
-    public int folderBackgroundOffset;
     public int folderIconSizePx;
-    public int folderIconPreviewPadding;
+    public int folderIconOffsetYPx;
 
     // Folder cell
     public int folderCellWidthPx;
@@ -340,9 +340,8 @@
         }
 
         // Folder icon
-        folderBackgroundOffset = -iconDrawablePaddingPx;
-        folderIconSizePx = iconSizePx + 2 * -folderBackgroundOffset;
-        folderIconPreviewPadding = res.getDimensionPixelSize(R.dimen.folder_preview_padding);
+        folderIconSizePx = IconNormalizer.getNormalizedCircleSize(iconSizePx);
+        folderIconOffsetYPx = (iconSizePx - folderIconSizePx) / 2;
     }
 
     private void updateAvailableFolderCellDimensions(DisplayMetrics dm, Resources res) {
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 556d25c..11e8c57 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -379,6 +379,7 @@
         }
 
         mOldConfig.setTo(newConfig);
+        UiFactory.onLauncherStateOrResumeChanged(this);
         super.onConfigurationChanged(newConfig);
     }
 
@@ -812,6 +813,7 @@
         if (mLauncherCallbacks != null) {
             mLauncherCallbacks.onResume();
         }
+        UiFactory.onLauncherStateOrResumeChanged(this);
 
         TraceHelper.endSection("ON_RESUME");
     }
@@ -831,6 +833,12 @@
     }
 
     @Override
+    protected void onUserLeaveHint() {
+        super.onUserLeaveHint();
+        UiFactory.onLauncherStateOrResumeChanged(this);
+    }
+
+    @Override
     public void onWindowFocusChanged(boolean hasFocus) {
         super.onWindowFocusChanged(hasFocus);
         mStateManager.onWindowFocusChanged();
diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 7d50a52..ef285df 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -294,6 +294,7 @@
             // Only disable clipping if needed, otherwise leave it as previous value.
             mLauncher.getWorkspace().setClipChildren(false);
         }
+        UiFactory.onLauncherStateOrResumeChanged(mLauncher);
     }
 
     private void onStateTransitionEnd(LauncherState state) {
@@ -312,6 +313,7 @@
         }
 
         UiFactory.onLauncherStateOrFocusChanged(mLauncher);
+        UiFactory.onLauncherStateOrResumeChanged(mLauncher);
     }
 
     public void onWindowFocusChanged() {
diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index aafae10..8788db4 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -23,7 +23,6 @@
 import com.android.launcher3.LauncherStateManager.AnimationConfig;
 import com.android.launcher3.LauncherStateManager.StateHandler;
 import com.android.launcher3.R;
-import com.android.launcher3.allapps.SearchUiManager.OnScrollRangeChangeListener;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.anim.PropertySetter;
@@ -39,8 +38,7 @@
  * If release velocity < THRES1, snap according to either top or bottom depending on whether it's
  * closer to top or closer to the page indicator.
  */
-public class AllAppsTransitionController
-        implements OnScrollRangeChangeListener, StateHandler, OnDeviceProfileChangeListener {
+public class AllAppsTransitionController implements StateHandler, OnDeviceProfileChangeListener {
 
     public static final Property<AllAppsTransitionController, Float> ALL_APPS_PROGRESS =
             new Property<AllAppsTransitionController, Float>(Float.class, "allAppsProgress") {
@@ -71,11 +69,11 @@
     private float mShiftRange;      // changes depending on the orientation
     private float mProgress;        // [0, 1], mShiftRange * mProgress = shiftCurrent
 
-    private static final float DEFAULT_SHIFT_RANGE = 10;
+    private float mScrollRangeDelta = 0;
 
     public AllAppsTransitionController(Launcher l) {
         mLauncher = l;
-        mShiftRange = DEFAULT_SHIFT_RANGE;
+        mShiftRange = mLauncher.getDeviceProfile().heightPx;
         mProgress = 1f;
 
         mIsDarkTheme = Themes.getAttrBoolean(mLauncher, R.attr.isMainColorDark);
@@ -95,6 +93,7 @@
     @Override
     public void onDeviceProfileChanged(DeviceProfile dp) {
         mIsVerticalLayout = dp.isVerticalBarLayout();
+        setScrollRangeDelta(mScrollRangeDelta);
 
         if (mIsVerticalLayout) {
             mAppsView.setAlpha(1);
@@ -205,13 +204,14 @@
 
     public void setupViews(AllAppsContainerView appsView) {
         mAppsView = appsView;
-        mAppsView.getSearchUiManager().addOnScrollRangeChangeListener(this);
     }
 
-    @Override
-    public void onScrollRangeChanged(int scrollRange) {
-        mShiftRange = scrollRange;
-        setProgress(mProgress);
+    /**
+     * Updates the total scroll range but does not update the UI.
+     */
+    public void setScrollRangeDelta(float delta) {
+        mScrollRangeDelta = delta;
+        mShiftRange = mLauncher.getDeviceProfile().heightPx - mScrollRangeDelta;
     }
 
     /**
diff --git a/src/com/android/launcher3/allapps/SearchUiManager.java b/src/com/android/launcher3/allapps/SearchUiManager.java
index d8568f8..68193f5 100644
--- a/src/com/android/launcher3/allapps/SearchUiManager.java
+++ b/src/com/android/launcher3/allapps/SearchUiManager.java
@@ -15,8 +15,6 @@
  */
 package com.android.launcher3.allapps;
 
-import android.support.animation.SpringAnimation;
-import android.support.annotation.NonNull;
 import android.view.KeyEvent;
 
 /**
@@ -30,11 +28,6 @@
     void initialize(AllAppsContainerView containerView);
 
     /**
-     * A {@link SpringAnimation} that will be used when the user flings.
-     */
-    @NonNull SpringAnimation getSpringForFling();
-
-    /**
      * Notifies the search manager to close any active search session.
      */
     void resetSearch();
@@ -44,14 +37,4 @@
      * some UI beforehand.
      */
     void preDispatchKeyEvent(KeyEvent keyEvent);
-
-    void addOnScrollRangeChangeListener(OnScrollRangeChangeListener listener);
-
-    /**
-     * Callback for listening to changes in the vertical scroll range when opening all-apps.
-     */
-    interface OnScrollRangeChangeListener {
-
-        void onScrollRangeChanged(int scrollRange);
-    }
 }
diff --git a/src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java b/src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java
index dd80dac..ad61c55 100644
--- a/src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java
+++ b/src/com/android/launcher3/allapps/search/AppsSearchContainerLayout.java
@@ -23,10 +23,6 @@
 
 import android.content.Context;
 import android.graphics.Rect;
-import android.support.animation.FloatValueHolder;
-import android.support.animation.SpringAnimation;
-import android.support.animation.SpringForce;
-import android.support.annotation.NonNull;
 import android.text.Selection;
 import android.text.Spannable;
 import android.text.SpannableString;
@@ -39,6 +35,7 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.ExtendedEditText;
+import com.android.launcher3.Insettable;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.allapps.AllAppsContainerView;
@@ -55,7 +52,7 @@
  */
 public class AppsSearchContainerLayout extends ExtendedEditText
         implements SearchUiManager, AllAppsSearchBarController.Callbacks,
-        AllAppsStore.OnUpdateListener {
+        AllAppsStore.OnUpdateListener, Insettable {
 
 
     private final Launcher mLauncher;
@@ -64,7 +61,6 @@
 
     private AlphabeticalAppsList mApps;
     private AllAppsContainerView mAppsView;
-    private SpringAnimation mSpring;
 
     public AppsSearchContainerLayout(Context context) {
         this(context, null);
@@ -91,9 +87,6 @@
         spanned.setSpan(new TintedDrawableSpan(getContext(), R.drawable.ic_allapps_search),
                 0, 1, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
         setHint(spanned);
-
-        // Note: This spring does nothing.
-        mSpring = new SpringAnimation(new FloatValueHolder()).setSpring(new SpringForce(0));
     }
 
     @Override
@@ -146,11 +139,6 @@
     }
 
     @Override
-    public @NonNull SpringAnimation getSpringForFling() {
-        return mSpring;
-    }
-
-    @Override
     public void onAppsUpdated() {
         mSearchBarController.refreshSearchResult();
     }
@@ -206,22 +194,15 @@
     }
 
     @Override
-    public void addOnScrollRangeChangeListener(final OnScrollRangeChangeListener listener) {
-        mLauncher.getHotseat().addOnLayoutChangeListener(new OnLayoutChangeListener() {
-            @Override
-            public void onLayoutChange(View v, int left, int top, int right, int bottom,
-                    int oldLeft, int oldTop, int oldRight, int oldBottom) {
-                DeviceProfile dp = mLauncher.getDeviceProfile();
-                if (!dp.isVerticalBarLayout()) {
-                    Rect insets = dp.getInsets();
-                    int hotseatBottom = bottom - dp.hotseatBarBottomPaddingPx - insets.bottom;
-                    MarginLayoutParams mlp = ((MarginLayoutParams) getLayoutParams());
-                    int myBot = mlp.topMargin + (int) getTranslationY() + mlp.height;
-                    listener.onScrollRangeChanged(hotseatBottom - myBot);
-                } else {
-                    listener.onScrollRangeChanged(bottom);
-                }
-            }
-        });
+    public void setInsets(Rect insets) {
+        DeviceProfile dp = mLauncher.getDeviceProfile();
+        if (dp.isVerticalBarLayout()) {
+            mLauncher.getAllAppsController().setScrollRangeDelta(0);
+        } else {
+            MarginLayoutParams mlp = ((MarginLayoutParams) getLayoutParams());
+            int myBot = mlp.topMargin + (int) getTranslationY() + mlp.height;
+            mLauncher.getAllAppsController().setScrollRangeDelta(
+                    dp.hotseatBarBottomPaddingPx + myBot);
+        }
     }
 }
diff --git a/src/com/android/launcher3/folder/PreviewBackground.java b/src/com/android/launcher3/folder/PreviewBackground.java
index a0912a4..069ec4b 100644
--- a/src/com/android/launcher3/folder/PreviewBackground.java
+++ b/src/com/android/launcher3/folder/PreviewBackground.java
@@ -129,18 +129,15 @@
             };
 
     public void setup(Launcher launcher, View invalidateDelegate,
-                      int availableSpace, int topPadding) {
+                      int availableSpaceX, int topPadding) {
         mInvalidateDelegate = invalidateDelegate;
         mBgColor = Themes.getAttrColor(launcher, android.R.attr.colorPrimary);
 
         DeviceProfile grid = launcher.getDeviceProfile();
-        final int previewSize = grid.folderIconSizePx;
-        final int previewPadding = grid.folderIconPreviewPadding;
+        previewSize = grid.folderIconSizePx;
 
-        this.previewSize = (previewSize - 2 * previewPadding);
-
-        basePreviewOffsetX = (availableSpace - this.previewSize) / 2;
-        basePreviewOffsetY = previewPadding + grid.folderBackgroundOffset + topPadding;
+        basePreviewOffsetX = (availableSpaceX - previewSize) / 2;
+        basePreviewOffsetY = topPadding + grid.folderIconOffsetYPx;
 
         // Stroke width is 1dp
         mStrokeWidth = launcher.getResources().getDisplayMetrics().density;
diff --git a/src/com/android/launcher3/graphics/IconNormalizer.java b/src/com/android/launcher3/graphics/IconNormalizer.java
index 5d99ba0..680c020 100644
--- a/src/com/android/launcher3/graphics/IconNormalizer.java
+++ b/src/com/android/launcher3/graphics/IconNormalizer.java
@@ -376,4 +376,12 @@
             last = i;
         }
     }
+
+    /**
+     * @return The diameter of the normalized circle that fits inside of the square (size x size).
+     */
+    public static int getNormalizedCircleSize(int size) {
+        float area = size * size * MAX_CIRCLE_AREA_FACTOR;
+        return (int) Math.round(Math.sqrt((4 * area) / Math.PI));
+    }
 }
diff --git a/src/com/android/launcher3/model/FirstScreenBroadcast.java b/src/com/android/launcher3/model/FirstScreenBroadcast.java
index 2736509..1149b55 100644
--- a/src/com/android/launcher3/model/FirstScreenBroadcast.java
+++ b/src/com/android/launcher3/model/FirstScreenBroadcast.java
@@ -135,10 +135,10 @@
 
         context.sendBroadcast(new Intent(ACTION_FIRST_SCREEN_ACTIVE_INSTALLS)
                 .setPackage(installerPackageName)
-                .putExtra(FOLDER_ITEM_EXTRA, folderItems.toArray())
-                .putExtra(WORKSPACE_ITEM_EXTRA, workspaceItems.toArray())
-                .putExtra(HOTSEAT_ITEM_EXTRA, hotseatItems.toArray())
-                .putExtra(WIDGET_ITEM_EXTRA, widgetItems.toArray())
+                .putStringArrayListExtra(FOLDER_ITEM_EXTRA, new ArrayList<>(folderItems))
+                .putStringArrayListExtra(WORKSPACE_ITEM_EXTRA, new ArrayList<>(workspaceItems))
+                .putStringArrayListExtra(HOTSEAT_ITEM_EXTRA, new ArrayList<>(hotseatItems))
+                .putStringArrayListExtra(WIDGET_ITEM_EXTRA, new ArrayList<>(widgetItems))
                 .putExtra(VERIFICATION_TOKEN_EXTRA, PendingIntent.getActivity(context, 0,
                         new Intent(), PendingIntent.FLAG_ONE_SHOT)));
     }
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java b/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
index e0b76fd..be9d5b7 100644
--- a/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
+++ b/src_ui_overrides/com/android/launcher3/uioverrides/UiFactory.java
@@ -38,5 +38,7 @@
 
     public static void onStart(Launcher launcher) { }
 
+    public static void onLauncherStateOrResumeChanged(Launcher launcher) { }
+
     public static void onTrimMemory(Launcher launcher, int level) { }
 }