diff --git a/build.gradle b/build.gradle
index 7ac4127..b59f264 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0-beta05'
+        classpath 'com.android.tools.build:gradle:3.2.0-rc03'
         classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.6'
     }
 }
@@ -16,7 +16,7 @@
 
 android {
     compileSdkVersion 28
-    buildToolsVersion '28.0.0'
+    buildToolsVersion '28.0.2'
 
     defaultConfig {
         minSdkVersion 21
diff --git a/proguard.flags b/proguard.flags
index a312b91..bb52a6c 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -2,80 +2,6 @@
   *;
 }
 
--keep class com.android.launcher3.allapps.AllAppsBackgroundDrawable {
-  public void setAlpha(int);
-  public int getAlpha();
-}
-
--keep class com.android.launcher3.BaseRecyclerViewFastScrollBar {
-  public void setThumbWidth(int);
-  public int getThumbWidth();
-  public void setTrackWidth(int);
-  public int getTrackWidth();
-}
-
--keep class com.android.launcher3.BaseRecyclerViewFastScrollPopup {
-  public void setAlpha(float);
-  public float getAlpha();
-}
-
--keep class com.android.launcher3.ButtonDropTarget {
-  public int getTextColor();
-}
-
--keep class com.android.launcher3.CellLayout {
-  public float getBackgroundAlpha();
-  public void setBackgroundAlpha(float);
-}
-
--keep class com.android.launcher3.CellLayout$LayoutParams {
-  public void setWidth(int);
-  public int getWidth();
-  public void setHeight(int);
-  public int getHeight();
-  public void setX(int);
-  public int getX();
-  public void setY(int);
-  public int getY();
-}
-
--keep class com.android.launcher3.views.BaseDragLayer$LayoutParams {
-  public void setWidth(int);
-  public int getWidth();
-  public void setHeight(int);
-  public int getHeight();
-  public void setX(int);
-  public int getX();
-  public void setY(int);
-  public int getY();
-}
-
--keep class com.android.launcher3.FastBitmapDrawable {
-  public void setDesaturation(float);
-  public float getDesaturation();
-  public void setBrightness(float);
-  public float getBrightness();
-}
-
--keep class com.android.launcher3.MemoryDumpActivity {
-  *;
-}
-
--keep class com.android.launcher3.PreloadIconDrawable {
-  public float getAnimationProgress();
-  public void setAnimationProgress(float);
-}
-
--keep class com.android.launcher3.pageindicators.CaretDrawable {
-  public float getCaretProgress();
-  public void setCaretProgress(float);
-}
-
--keep class com.android.launcher3.Workspace {
-  public float getBackgroundAlpha();
-  public void setBackgroundAlpha(float);
-}
-
 # Proguard will strip new callbacks in LauncherApps.Callback from
 # WrappedCallback if compiled against an older SDK. Don't let this happen.
 -keep class com.android.launcher3.compat.** {
diff --git a/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java b/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java
new file mode 100644
index 0000000..4d56786
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+package com.android.launcher3.uioverrides;
+
+import static android.view.MotionEvent.ACTION_DOWN;
+import static android.view.MotionEvent.ACTION_MOVE;
+
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.touch.TouchEventTranslator;
+import com.android.launcher3.util.TouchController;
+import com.android.quickstep.RecentsModel;
+import com.android.systemui.shared.recents.ISystemUiProxy;
+
+/**
+ * TouchController for handling touch events that get sent to the StatusBar. Once the
+ * Once the event delta y passes the touch slop, the events start getting forwarded.
+ * All events are offset by initial Y value of the pointer.
+ */
+public class StatusBarTouchController implements TouchController {
+
+    private static final String TAG = "StatusBarController";
+
+    protected final Launcher mLauncher;
+    protected final TouchEventTranslator mTranslator;
+    private final float mTouchSlop;
+    private ISystemUiProxy mSysUiProxy;
+
+    /* If {@code false}, this controller should not handle the input {@link MotionEvent}.*/
+    private boolean mCanIntercept;
+
+    public StatusBarTouchController(Launcher l) {
+        mLauncher = l;
+        mTouchSlop = ViewConfiguration.get(l).getScaledTouchSlop();
+        mTranslator = new TouchEventTranslator((MotionEvent ev)-> dispatchTouchEvent(ev));
+    }
+
+    private void dispatchTouchEvent(MotionEvent ev) {
+        try {
+            if (mSysUiProxy != null) {
+                mSysUiProxy.onStatusBarMotionEvent(ev);
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "Remote exception on sysUiProxy.", e);
+        }
+    }
+
+    @Override
+    public final boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        int action = ev.getActionMasked();
+        if (action == ACTION_DOWN) {
+            mCanIntercept = canInterceptTouch(ev);
+            if (!mCanIntercept) {
+                return false;
+            }
+            mTranslator.reset();
+            mTranslator.setDownParameters(0, ev);
+        } else if (ev.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) {
+            // Check!! should only set it only when threshold is not entered.
+            mTranslator.setDownParameters(ev.getActionIndex(), ev);
+        }
+        if (!mCanIntercept) {
+            return false;
+        }
+        if (action == ACTION_MOVE) {
+            float dy = ev.getY() - mTranslator.getDownY();
+            if (dy > mTouchSlop) {
+                mTranslator.dispatchDownEvents(ev);
+                mTranslator.processMotionEvent(ev);
+                return true;
+            }
+        }
+        return false;
+    }
+
+
+    @Override
+    public final boolean onControllerTouchEvent(MotionEvent ev) {
+        mTranslator.processMotionEvent(ev);
+        return true;
+    }
+
+    private boolean canInterceptTouch(MotionEvent ev) {
+        if (!mLauncher.isInState(LauncherState.NORMAL) ||
+                AbstractFloatingView.getTopOpenViewWithType(mLauncher,
+                        AbstractFloatingView.TYPE_STATUS_BAR_SWIPE_DOWN_DISALLOW) != null) {
+            return false;
+        } else {
+            // For NORMAL state, only listen if the event originated above the navbar height
+            DeviceProfile dp = mLauncher.getDeviceProfile();
+            if (ev.getY() > (mLauncher.getDragLayer().getHeight() - dp.getInsets().bottom)) {
+                return false;
+            }
+        }
+        mSysUiProxy = RecentsModel.INSTANCE.get(mLauncher).getSystemUiProxy();
+        return mSysUiProxy != null;
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
index c939330..5980d85 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
@@ -42,6 +42,7 @@
 import com.android.launcher3.LauncherStateManager.StateHandler;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.util.TouchController;
 import com.android.quickstep.OverviewInteractionState;
 import com.android.quickstep.RecentsModel;
@@ -52,6 +53,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintWriter;
+import java.util.ArrayList;
 import java.util.zip.Deflater;
 
 public class UiFactory {
@@ -59,24 +61,25 @@
     public static TouchController[] createTouchControllers(Launcher launcher) {
         boolean swipeUpEnabled = OverviewInteractionState.INSTANCE.get(launcher)
                 .isSwipeUpGestureEnabled();
-        if (!swipeUpEnabled) {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new OverviewToAllAppsTouchController(launcher),
-                    new LauncherTaskViewController(launcher)};
+        ArrayList<TouchController> list = new ArrayList<>();
+        list.add(launcher.getDragController());
+
+        if (!swipeUpEnabled || launcher.getDeviceProfile().isVerticalBarLayout()) {
+            list.add(new OverviewToAllAppsTouchController(launcher));
         }
+
         if (launcher.getDeviceProfile().isVerticalBarLayout()) {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new OverviewToAllAppsTouchController(launcher),
-                    new LandscapeEdgeSwipeController(launcher),
-                    new LauncherTaskViewController(launcher)};
+            list.add(new LandscapeEdgeSwipeController(launcher));
         } else {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new PortraitStatesTouchController(launcher),
-                    new LauncherTaskViewController(launcher)};
+            list.add(new PortraitStatesTouchController(launcher));
         }
+        if (FeatureFlags.PULL_DOWN_STATUS_BAR && Utilities.IS_DEBUG_DEVICE
+                && !launcher.getDeviceProfile().isMultiWindowMode
+                && !launcher.getDeviceProfile().isVerticalBarLayout()) {
+            list.add(new StatusBarTouchController(launcher));
+        }
+        list.add(new LauncherTaskViewController(launcher));
+        return list.toArray(new TouchController[list.size()]);
     }
 
     public static void setOnTouchControllersChangedListener(Context context, Runnable listener) {
diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 4fe6099..4575132 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -91,6 +91,11 @@
     public static final int TYPE_ACCESSIBLE = TYPE_ALL
             & ~TYPE_DISCOVERY_BOUNCE & ~TYPE_QUICKSTEP_PREVIEW;
 
+    // These view all have particular operation associated with swipe down interaction.
+    public static final int TYPE_STATUS_BAR_SWIPE_DOWN_DISALLOW = TYPE_WIDGETS_BOTTOM_SHEET |
+            TYPE_WIDGETS_FULL_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_ON_BOARD_POPUP |
+            TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU ;
+
     protected boolean mIsOpen;
 
     public AbstractFloatingView(Context context, AttributeSet attrs) {
diff --git a/src/com/android/launcher3/AppWidgetResizeFrame.java b/src/com/android/launcher3/AppWidgetResizeFrame.java
index 0f5317b..8e2ffe9 100644
--- a/src/com/android/launcher3/AppWidgetResizeFrame.java
+++ b/src/com/android/launcher3/AppWidgetResizeFrame.java
@@ -1,5 +1,10 @@
 package com.android.launcher3;
 
+import static com.android.launcher3.LauncherAnimUtils.LAYOUT_HEIGHT;
+import static com.android.launcher3.LauncherAnimUtils.LAYOUT_WIDTH;
+import static com.android.launcher3.views.BaseDragLayer.LAYOUT_X;
+import static com.android.launcher3.views.BaseDragLayer.LAYOUT_Y;
+
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
@@ -429,10 +434,10 @@
             requestLayout();
         } else {
             ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(lp,
-                    PropertyValuesHolder.ofInt("width", lp.width, newWidth),
-                    PropertyValuesHolder.ofInt("height", lp.height, newHeight),
-                    PropertyValuesHolder.ofInt("x", lp.x, newX),
-                    PropertyValuesHolder.ofInt("y", lp.y, newY));
+                    PropertyValuesHolder.ofInt(LAYOUT_WIDTH, lp.width, newWidth),
+                    PropertyValuesHolder.ofInt(LAYOUT_HEIGHT, lp.height, newHeight),
+                    PropertyValuesHolder.ofInt(LAYOUT_X, lp.x, newX),
+                    PropertyValuesHolder.ofInt(LAYOUT_Y, lp.y, newY));
             mFirstFrameAnimatorHelper.addTo(oa).addUpdateListener(a -> requestLayout());
 
             AnimatorSet set = new AnimatorSet();
diff --git a/src/com/android/launcher3/ButtonDropTarget.java b/src/com/android/launcher3/ButtonDropTarget.java
index dd63ebc..2b0da43 100644
--- a/src/com/android/launcher3/ButtonDropTarget.java
+++ b/src/com/android/launcher3/ButtonDropTarget.java
@@ -33,6 +33,7 @@
 import android.graphics.drawable.Drawable;
 import android.text.TextUtils;
 import android.util.AttributeSet;
+import android.util.Property;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -55,6 +56,20 @@
 public abstract class ButtonDropTarget extends TextView
         implements DropTarget, DragController.DragListener, OnClickListener {
 
+    private static final Property<ButtonDropTarget, Integer> TEXT_COLOR =
+            new Property<ButtonDropTarget, Integer>(Integer.TYPE, "textColor") {
+
+                @Override
+                public Integer get(ButtonDropTarget target) {
+                    return target.getTextColor();
+                }
+
+                @Override
+                public void set(ButtonDropTarget target, Integer value) {
+                    target.setTextColor(value);
+                }
+            };
+
     private static final int[] sTempCords = new int[2];
     private static final int DRAG_VIEW_DROP_DURATION = 285;
 
@@ -206,7 +221,7 @@
         });
 
         mCurrentColorAnim.play(anim1);
-        mCurrentColorAnim.play(ObjectAnimator.ofArgb(this, "textColor", targetColor));
+        mCurrentColorAnim.play(ObjectAnimator.ofArgb(this, TEXT_COLOR, targetColor));
         mCurrentColorAnim.start();
     }
 
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index f6f1496..a42238e 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -2678,38 +2678,6 @@
         public String toString() {
             return "(" + this.cellX + ", " + this.cellY + ")";
         }
-
-        public void setWidth(int width) {
-            this.width = width;
-        }
-
-        public int getWidth() {
-            return width;
-        }
-
-        public void setHeight(int height) {
-            this.height = height;
-        }
-
-        public int getHeight() {
-            return height;
-        }
-
-        public void setX(int x) {
-            this.x = x;
-        }
-
-        public int getX() {
-            return x;
-        }
-
-        public void setY(int y) {
-            this.y = y;
-        }
-
-        public int getY() {
-            return y;
-        }
     }
 
     // This class stores info for two purposes:
diff --git a/src/com/android/launcher3/LauncherAnimUtils.java b/src/com/android/launcher3/LauncherAnimUtils.java
index ac07e88..aad3449 100644
--- a/src/com/android/launcher3/LauncherAnimUtils.java
+++ b/src/com/android/launcher3/LauncherAnimUtils.java
@@ -19,6 +19,7 @@
 import android.graphics.drawable.Drawable;
 import android.util.Property;
 import android.view.View;
+import android.view.ViewGroup.LayoutParams;
 
 public class LauncherAnimUtils {
     /**
@@ -64,4 +65,30 @@
     public static int blockedFlingDurationFactor(float velocity) {
         return (int) Utilities.boundToRange(Math.abs(velocity) / 2, 2f, 6f);
     }
+
+    public static final Property<LayoutParams, Integer> LAYOUT_WIDTH =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "width") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.width;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer width) {
+                    lp.width = width;
+                }
+            };
+
+    public static final Property<LayoutParams, Integer> LAYOUT_HEIGHT =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "height") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.height;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer height) {
+                    lp.height = height;
+                }
+            };
 }
diff --git a/src/com/android/launcher3/SettingsActivity.java b/src/com/android/launcher3/SettingsActivity.java
index 8589b7e..1f80226 100644
--- a/src/com/android/launcher3/SettingsActivity.java
+++ b/src/com/android/launcher3/SettingsActivity.java
@@ -88,6 +88,11 @@
     @Override
     public boolean onPreferenceStartFragment(
             PreferenceFragment preferenceFragment, Preference pref) {
+        if (getFragmentManager().isStateSaved()) {
+            // Sometimes onClick can come after onPause because of being posted on the handler.
+            // Skip starting new fragments in that case.
+            return false;
+        }
         Fragment f = Fragment.instantiate(this, pref.getFragment(), pref.getExtras());
         if (f instanceof DialogFragment) {
             ((DialogFragment) f).show(getFragmentManager(), pref.getKey());
@@ -241,8 +246,7 @@
      * Content observer which listens for system badging setting changes,
      * and updates the launcher badging setting subtext accordingly.
      */
-    private static class IconBadgingObserver extends SettingsObserver.Secure
-            implements Preference.OnPreferenceClickListener {
+    private static class IconBadgingObserver extends SettingsObserver.Secure {
 
         private final ButtonPreference mBadgingPref;
         private final ContentResolver mResolver;
@@ -275,16 +279,11 @@
                 }
             }
             mBadgingPref.setWidgetFrameVisible(!serviceEnabled);
-            mBadgingPref.setOnPreferenceClickListener(serviceEnabled ? null : this);
+            mBadgingPref.setFragment(
+                    serviceEnabled ? null : NotificationAccessConfirmation.class.getName());
             mBadgingPref.setSummary(summary);
 
         }
-
-        @Override
-        public boolean onPreferenceClick(Preference preference) {
-            new NotificationAccessConfirmation().show(mFragmentManager, "notification_access");
-            return true;
-        }
     }
 
     public static class NotificationAccessConfirmation
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 353916f..b5a770f 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -671,9 +671,6 @@
     private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete,
             final boolean stripEmptyScreens) {
         // XXX: Do we need to update LM workspace screens below?
-        PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f);
-        PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f);
-
         final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
 
         mRemoveEmptyScreenRunnable = new Runnable() {
@@ -692,7 +689,7 @@
             }
         };
 
-        ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha);
+        ObjectAnimator oa = ObjectAnimator.ofFloat(cl, ALPHA, 0f);
         oa.setDuration(duration);
         oa.setStartDelay(delay);
         oa.addListener(new AnimatorListenerAdapter() {
diff --git a/src/com/android/launcher3/config/BaseFlags.java b/src/com/android/launcher3/config/BaseFlags.java
index 05fc33f..b67d35b 100644
--- a/src/com/android/launcher3/config/BaseFlags.java
+++ b/src/com/android/launcher3/config/BaseFlags.java
@@ -36,6 +36,10 @@
 
     // Feature flag to enable moving the QSB on the 0th screen of the workspace.
     public static final boolean QSB_ON_FIRST_SCREEN = true;
+
+    //Feature flag to enable pulling down navigation shade from workspace.
+    public static final boolean PULL_DOWN_STATUS_BAR = true;
+
     // When enabled the all-apps icon is not added to the hotseat.
     public static final boolean NO_ALL_APPS_ICON = true;
 
diff --git a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
index fd9157e..7b09bcc 100644
--- a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
+++ b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 The Android Open Source Project
+ * Copyright (C) 2018 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.
diff --git a/src/com/android/launcher3/touch/TouchEventTranslator.java b/src/com/android/launcher3/touch/TouchEventTranslator.java
new file mode 100644
index 0000000..8a5c932
--- /dev/null
+++ b/src/com/android/launcher3/touch/TouchEventTranslator.java
@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+package com.android.launcher3.touch;
+
+import android.graphics.PointF;
+import android.util.Log;
+import android.util.Pair;
+import android.util.SparseArray;
+import android.util.SparseLongArray;
+import android.view.MotionEvent;
+import android.view.MotionEvent.PointerCoords;
+import android.view.MotionEvent.PointerProperties;
+
+import com.android.launcher3.Utilities.Consumer;
+
+/**
+ * To minimize the size of the MotionEvent, historic events are not copied and passed via the
+ * listener.
+ */
+public class TouchEventTranslator {
+
+    private static final String TAG = "TouchEventTranslator";
+    private static final boolean DEBUG = false;
+
+    private class DownState {
+        long timeStamp;
+        float downY;
+        public DownState(long timeStamp, float downY) {
+            this.timeStamp = timeStamp;
+            this.downY = downY;
+        }
+    };
+    private final DownState ZERO = new DownState(0, 0f);
+
+    private final Consumer<MotionEvent> mListener;
+
+    private final SparseArray<DownState> mDownEvents;
+    private final SparseArray<PointF> mFingers;
+
+    private final SparseArray<Pair<PointerProperties[], PointerCoords[]>> mCache;
+
+    public TouchEventTranslator(Consumer<MotionEvent> listener) {
+        mDownEvents = new SparseArray<>();
+        mFingers = new SparseArray<>();
+        mCache = new SparseArray<>();
+
+        mListener = listener;
+    }
+
+    public void reset() {
+        mDownEvents.clear();
+        mFingers.clear();
+    }
+
+    public float getDownY() {
+        return mDownEvents.get(0).downY;
+    }
+
+    public void setDownParameters(int idx, MotionEvent e) {
+        DownState ev = new DownState(e.getEventTime(), e.getY(idx));
+        mDownEvents.append(idx, ev);
+    }
+
+    public void dispatchDownEvents(MotionEvent ev) {
+        for(int i = 0; i < ev.getPointerCount() && i < mDownEvents.size(); i++) {
+            int pid = ev.getPointerId(i);
+            put(pid, ev.getX(i), 0, mDownEvents.get(i).timeStamp, ev);
+        }
+    }
+
+    public void processMotionEvent(MotionEvent ev) {
+        if (DEBUG) {
+            printSamples(TAG + " processMotionEvent", ev);
+        }
+        int index = ev.getActionIndex();
+        float x = ev.getX(index);
+        float y = ev.getY(index) - mDownEvents.get(index, ZERO).downY;
+        switch (ev.getActionMasked()) {
+            case MotionEvent.ACTION_POINTER_DOWN:
+                int pid = ev.getPointerId(index);
+                if(mFingers.get(pid, null) != null) {
+                    for(int i=0; i < ev.getPointerCount(); i++) {
+                        pid = ev.getPointerId(i);
+                        position(pid, x, y);
+                    }
+                    generateEvent(ev.getAction(), ev);
+                } else {
+                    put(pid, x, y, ev);
+                }
+                break;
+            case MotionEvent.ACTION_MOVE:
+                for(int i=0; i < ev.getPointerCount(); i++) {
+                    pid = ev.getPointerId(i);
+                    position(pid, x, y);
+                }
+                generateEvent(ev.getAction(), ev);
+                break;
+            case MotionEvent.ACTION_POINTER_UP:
+            case MotionEvent.ACTION_UP:
+                pid = ev.getPointerId(index);
+                lift(pid, index, x, y, ev);
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                cancel(ev);
+                break;
+            default:
+                Log.v(TAG, "Didn't process ");
+                printSamples(TAG, ev);
+
+        }
+    }
+
+    private TouchEventTranslator put(int id, float x, float y, MotionEvent ev) {
+        return put(id, x, y, ev.getEventTime(), ev);
+    }
+
+    private TouchEventTranslator put(int id, float x, float y, long ms, MotionEvent ev) {
+        checkFingerExistence(id, false);
+        boolean isInitialDown = (mFingers.size() == 0);
+
+        mFingers.put(id, new PointF(x, y));
+        int n = mFingers.size();
+
+        if (mCache.get(n) == null) {
+            PointerProperties[] properties = new PointerProperties[n];
+            PointerCoords[] coords = new PointerCoords[n];
+            for (int i = 0; i < n; i++) {
+                properties[i] = new PointerProperties();
+                coords[i] = new PointerCoords();
+            }
+            mCache.put(n, new Pair(properties, coords));
+        }
+
+        int action;
+        if (isInitialDown) {
+            action = MotionEvent.ACTION_DOWN;
+        } else {
+            action = MotionEvent.ACTION_POINTER_DOWN;
+            // Set the id of the changed pointer.
+            action |= id << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+        }
+        generateEvent(action, ms, ev);
+        return this;
+    }
+
+    public TouchEventTranslator position(int id, float x, float y) {
+        checkFingerExistence(id, true);
+        mFingers.get(id).set(x, y);
+        return this;
+    }
+
+    private TouchEventTranslator lift(int id, int index, MotionEvent ev) {
+        checkFingerExistence(id, true);
+        boolean isFinalUp = (mFingers.size() == 1);
+        int action;
+        if (isFinalUp) {
+            action = MotionEvent.ACTION_UP;
+        } else {
+            action = MotionEvent.ACTION_POINTER_UP;
+            // Set the id of the changed pointer.
+            action |= index << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+        }
+        generateEvent(action, ev);
+        mFingers.remove(id);
+        return this;
+    }
+
+    private TouchEventTranslator lift(int id, int index, float x, float y, MotionEvent ev) {
+        checkFingerExistence(id, true);
+        mFingers.get(id).set(x, y);
+        return lift(id, index, ev);
+    }
+
+    public TouchEventTranslator cancel(MotionEvent ev) {
+        generateEvent(MotionEvent.ACTION_CANCEL, ev);
+        mFingers.clear();
+        return this;
+    }
+
+    private void checkFingerExistence(int id, boolean shouldExist) {
+        if (shouldExist != (mFingers.get(id, null) != null)) {
+            throw new IllegalArgumentException(
+                    shouldExist ? "Finger does not exist" : "Finger already exists");
+        }
+    }
+
+
+    /**
+     * Used to debug MotionEvents being sent/received.
+     */
+    public void printSamples(String msg, MotionEvent ev) {
+        System.out.printf("%s %s", msg, MotionEvent.actionToString(ev.getActionMasked()));
+        final int pointerCount = ev.getPointerCount();
+        System.out.printf("#%d/%d", ev.getPointerId(ev.getActionIndex()), pointerCount);
+        System.out.printf(" t=%d:", ev.getEventTime());
+        for (int p = 0; p < pointerCount; p++) {
+            System.out.printf("  id=%d: (%f,%f)",
+                    ev.getPointerId(p), ev.getX(p), ev.getY(p));
+        }
+        System.out.println();
+    }
+
+    private void generateEvent(int action, MotionEvent ev) {
+        generateEvent(action, ev.getEventTime(), ev);
+    }
+
+    private void generateEvent(int action, long ms, MotionEvent ev) {
+        Pair<PointerProperties[], PointerCoords[]> state = getFingerState();
+        MotionEvent event = MotionEvent.obtain(
+                mDownEvents.get(0).timeStamp,
+                ms,
+                action,
+                state.first.length,
+                state.first,
+                state.second,
+                ev.getMetaState(),
+                ev.getButtonState() /* buttonState */,
+                ev.getXPrecision() /* xPrecision */,
+                ev.getYPrecision() /* yPrecision */,
+                ev.getDeviceId(),
+                ev.getEdgeFlags(),
+                ev.getSource(),
+                ev.getFlags() /* flags */);
+        if (DEBUG) {
+            printSamples(TAG + " generateEvent", event);
+        }
+        mListener.accept(event);
+        event.recycle();
+    }
+
+    /**
+     * Returns the description of the fingers' state expected by MotionEvent.
+     */
+    private Pair<PointerProperties[], PointerCoords[]> getFingerState() {
+        int nFingers = mFingers.size();
+
+        Pair<PointerProperties[], PointerCoords[]> result = mCache.get(nFingers);
+        PointerProperties[] properties = result.first;
+        PointerCoords[] coordinates = result.second;
+
+        int index = 0;
+        for (int i = 0; i < mFingers.size(); i++) {
+            int id = mFingers.keyAt(i);
+            PointF location = mFingers.get(id);
+
+            PointerProperties property = properties[i];
+            property.id = id;
+            property.toolType = MotionEvent.TOOL_TYPE_FINGER;
+            properties[index] = property;
+
+            PointerCoords coordinate = coordinates[i];
+            coordinate.x = location.x;
+            coordinate.y = location.y;
+            coordinate.pressure = 1.0f;
+            coordinates[index] = coordinate;
+
+            index++;
+        }
+        return mCache.get(nFingers);
+    }
+}
diff --git a/src/com/android/launcher3/views/BaseDragLayer.java b/src/com/android/launcher3/views/BaseDragLayer.java
index e8a879f..1faca15 100644
--- a/src/com/android/launcher3/views/BaseDragLayer.java
+++ b/src/com/android/launcher3/views/BaseDragLayer.java
@@ -21,6 +21,7 @@
 import android.content.Context;
 import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.util.Property;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
@@ -42,6 +43,32 @@
 public abstract class BaseDragLayer<T extends Context & ActivityContext>
         extends InsettableFrameLayout {
 
+    public static final Property<LayoutParams, Integer> LAYOUT_X =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "x") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.x;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer x) {
+                    lp.x = x;
+                }
+            };
+
+    public static final Property<LayoutParams, Integer> LAYOUT_Y =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "y") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.y;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer y) {
+                    lp.y = y;
+                }
+            };
+
     protected final int[] mTmpXY = new int[2];
     protected final Rect mHitRect = new Rect();
 
@@ -307,38 +334,6 @@
         public LayoutParams(ViewGroup.LayoutParams lp) {
             super(lp);
         }
-
-        public void setWidth(int width) {
-            this.width = width;
-        }
-
-        public int getWidth() {
-            return width;
-        }
-
-        public void setHeight(int height) {
-            this.height = height;
-        }
-
-        public int getHeight() {
-            return height;
-        }
-
-        public void setX(int x) {
-            this.x = x;
-        }
-
-        public int getX() {
-            return x;
-        }
-
-        public void setY(int y) {
-            this.y = y;
-        }
-
-        public int getY() {
-            return y;
-        }
     }
 
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index d450366..5a3d36d 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -56,6 +56,7 @@
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.rule.LauncherActivityRule;
 
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 
@@ -94,6 +95,12 @@
         mLauncher = new LauncherInstrumentation(getInstrumentation());
         mTargetContext = InstrumentationRegistry.getTargetContext();
         mTargetPackage = mTargetContext.getPackageName();
+        mDevice.executeShellCommand("settings put global heads_up_notifications_enabled 0");
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        mDevice.executeShellCommand("settings put global heads_up_notifications_enabled 1");
     }
 
     protected void lockRotation(boolean naturalOrientation) throws RemoteException {
diff --git a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
index 0dc9b2e..17fdd26 100644
--- a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
@@ -103,6 +103,8 @@
         if (mSessionId > -1) {
             mTargetContext.getPackageManager().getPackageInstaller().abandonSession(mSessionId);
         }
+
+        super.tearDown();
     }
 
     @Test
diff --git a/tests/tapl/com/android/launcher3/tapl/AppIcon.java b/tests/tapl/com/android/launcher3/tapl/AppIcon.java
index ea47503..a11f6df 100644
--- a/tests/tapl/com/android/launcher3/tapl/AppIcon.java
+++ b/tests/tapl/com/android/launcher3/tapl/AppIcon.java
@@ -42,6 +42,7 @@
     /**
      * Clicks the icon to launch its app.
      */
+    @Deprecated
     public Background launch() {
         LauncherInstrumentation.log("AppIcon.launch before click");
         LauncherInstrumentation.assertTrue(
@@ -50,6 +51,20 @@
         return new Background(mLauncher);
     }
 
+    /**
+     * Clicks the icon to launch its app.
+     */
+    public Background launch(String packageName) {
+        LauncherInstrumentation.log("AppIcon.launch before click");
+        LauncherInstrumentation.assertTrue(
+                "Launching an app didn't open a new window: " + mIcon.getText(),
+                mIcon.clickAndWait(Until.newWindow(), LauncherInstrumentation.WAIT_TIME_MS));
+        LauncherInstrumentation.assertTrue(
+                "App didn't start: " + packageName, mLauncher.getDevice().wait(Until.hasObject(
+                        By.pkg(packageName).depth(0)), LauncherInstrumentation.WAIT_TIME_MS));
+        return new Background(mLauncher);
+    }
+
     UiObject2 getIcon() {
         return mIcon;
     }
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 441fc65..9e4a615 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -225,7 +225,10 @@
         // otherwise waitForIdle may return immediately in case when there was a big enough pause in
         // accessibility events prior to pressing Home.
         executeAndWaitForEvent(
-                () -> getSystemUiObject("home").click(),
+                () -> {
+                    log("LauncherInstrumentation.pressHome before clicking");
+                    getSystemUiObject("home").click();
+                },
                 event -> true,
                 "Pressing Home didn't produce any events");
         mDevice.waitForIdle();