diff --git a/src/com/android/launcher3/FastBitmapDrawable.java b/src/com/android/launcher3/FastBitmapDrawable.java
index 199baaf..2ec6b4c 100644
--- a/src/com/android/launcher3/FastBitmapDrawable.java
+++ b/src/com/android/launcher3/FastBitmapDrawable.java
@@ -36,8 +36,6 @@
 
 public class FastBitmapDrawable extends Drawable {
 
-    private static final int[] STATE_PRESSED = new int[] {android.R.attr.state_pressed};
-
     private static final float PRESSED_BRIGHTNESS = 100f / 255f;
     private static final float DISABLED_DESATURATION = 1f;
     private static final float DISABLED_BRIGHTNESS = 0.5f;
@@ -185,6 +183,11 @@
     }
 
     @Override
+    public ColorFilter getColorFilter() {
+        return mPaint.getColorFilter();
+    }
+
+    @Override
     protected boolean onStateChange(int[] state) {
         boolean isPressed = false;
         for (int s : state) {
diff --git a/src/com/android/launcher3/allapps/VerticalPullDetector.java b/src/com/android/launcher3/allapps/VerticalPullDetector.java
index 7800c01..13c4f63 100644
--- a/src/com/android/launcher3/allapps/VerticalPullDetector.java
+++ b/src/com/android/launcher3/allapps/VerticalPullDetector.java
@@ -17,7 +17,7 @@
     private static final boolean DBG = false;
     private static final String TAG = "VerticalPullDetector";
 
-    private float mTouchSlop;
+    private final float mTouchSlop;
 
     private int mScrollConditions;
     public static final int DIRECTION_UP = 1 << 0;
@@ -47,8 +47,6 @@
         SETTLING       // onDragEnd
     }
 
-    ;
-
     //------------------- ScrollState transition diagram -----------------------------------
     //
     // IDLE ->      (mDisplacement > mTouchSlop) -> DRAGGING
@@ -110,7 +108,7 @@
     private boolean mIgnoreSlopWhenSettling;
 
     /* Client of this gesture detector can register a callback. */
-    Listener mListener;
+    private Listener mListener;
 
     public void setListener(Listener l) {
         mListener = l;
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
index 647c315..cc3e5a7 100644
--- a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
@@ -29,23 +29,22 @@
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
+import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-
+import android.util.ArrayMap;
 import com.android.launcher3.compat.ShortcutConfigActivityInfo.ShortcutConfigActivityInfoVL;
 import com.android.launcher3.shortcuts.ShortcutInfoCompat;
 import com.android.launcher3.util.PackageUserKey;
-
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 public class LauncherAppsCompatVL extends LauncherAppsCompat {
 
     protected final LauncherApps mLauncherApps;
     protected final Context mContext;
 
-    private Map<OnAppsChangedCallbackCompat, WrappedCallback> mCallbacks = new HashMap<>();
+    private final ArrayMap<OnAppsChangedCallbackCompat, WrappedCallback> mCallbacks =
+        new ArrayMap<>();
 
     LauncherAppsCompatVL(Context context) {
         mContext = context;
@@ -131,43 +130,52 @@
     }
 
     private static class WrappedCallback extends LauncherApps.Callback {
-        private LauncherAppsCompat.OnAppsChangedCallbackCompat mCallback;
+        private final LauncherAppsCompat.OnAppsChangedCallbackCompat mCallback;
 
         public WrappedCallback(LauncherAppsCompat.OnAppsChangedCallbackCompat callback) {
             mCallback = callback;
         }
 
+        @Override
         public void onPackageRemoved(String packageName, UserHandle user) {
             mCallback.onPackageRemoved(packageName, user);
         }
 
+        @Override
         public void onPackageAdded(String packageName, UserHandle user) {
             mCallback.onPackageAdded(packageName, user);
         }
 
+        @Override
         public void onPackageChanged(String packageName, UserHandle user) {
             mCallback.onPackageChanged(packageName, user);
         }
 
+        @Override
         public void onPackagesAvailable(String[] packageNames, UserHandle user, boolean replacing) {
             mCallback.onPackagesAvailable(packageNames, user, replacing);
         }
 
+        @Override
         public void onPackagesUnavailable(String[] packageNames, UserHandle user,
                 boolean replacing) {
             mCallback.onPackagesUnavailable(packageNames, user, replacing);
         }
 
+        @Override
         public void onPackagesSuspended(String[] packageNames, UserHandle user) {
             mCallback.onPackagesSuspended(packageNames, user);
         }
 
+        @Override
         public void onPackagesUnsuspended(String[] packageNames, UserHandle user) {
             mCallback.onPackagesUnsuspended(packageNames, user);
         }
 
-        public void onShortcutsChanged(String packageName, List<ShortcutInfo> shortcuts,
-                UserHandle user) {
+        @Override
+        public void onShortcutsChanged(@NonNull String packageName,
+            @NonNull List<ShortcutInfo> shortcuts,
+            @NonNull UserHandle user) {
             List<ShortcutInfoCompat> shortcutInfoCompats = new ArrayList<>(shortcuts.size());
             for (ShortcutInfo shortcutInfo : shortcuts) {
                 shortcutInfoCompats.add(new ShortcutInfoCompat(shortcutInfo));
diff --git a/src/com/android/launcher3/dragndrop/DragView.java b/src/com/android/launcher3/dragndrop/DragView.java
index 0418d25..ab2f100 100644
--- a/src/com/android/launcher3/dragndrop/DragView.java
+++ b/src/com/android/launcher3/dragndrop/DragView.java
@@ -29,6 +29,7 @@
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
+import android.graphics.ColorFilter;
 import android.graphics.ColorMatrix;
 import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Matrix;
@@ -245,6 +246,15 @@
                             addView(mBgImageView);
                             addView(mFgImageView);
                             setWillNotDraw(true);
+
+                            if (info.isDisabled()) {
+                                FastBitmapDrawable d = new FastBitmapDrawable(null);
+                                d.setIsDisabled(true);
+                                ColorFilter cf = d.getColorFilter();
+                                mBgImageView.setColorFilter(cf);
+                                mFgImageView.setColorFilter(cf);
+                                mBadge.setColorFilter(cf);
+                            }
                         }
                     });
                 }
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 87e42eb..f3f337d 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (C) 2015 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -19,6 +19,7 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
+import android.util.ArrayMap;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.Gravity;
@@ -26,7 +27,6 @@
 import android.view.View;
 import android.view.ViewDebug;
 import android.view.animation.DecelerateInterpolator;
-
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.CellLayout;
 import com.android.launcher3.DeviceProfile;
@@ -44,9 +44,7 @@
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.pageindicators.PageIndicator;
 import com.android.launcher3.util.Thunk;
-
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
 
@@ -72,7 +70,7 @@
     private final LayoutInflater mInflater;
     private final ViewGroupFocusHelper mFocusIndicatorHelper;
 
-    @Thunk final HashMap<View, Runnable> mPendingAnimations = new HashMap<>();
+    @Thunk final ArrayMap<View, Runnable> mPendingAnimations = new ArrayMap<>();
 
     @ViewDebug.ExportedProperty(category = "launcher")
     private final int mMaxCountX;
@@ -111,7 +109,7 @@
     public void setFolder(Folder folder) {
         mFolder = folder;
         mKeyListener = new PagedFolderKeyEventListener(folder);
-        mPageIndicator = (PageIndicator) folder.findViewById(R.id.folder_page_indicator);
+        mPageIndicator = folder.findViewById(R.id.folder_page_indicator);
         initParentViews(folder);
     }
 
@@ -193,8 +191,8 @@
      * @return list of items that could not be bound, probably because we hit the max size limit.
      */
     public ArrayList<ShortcutInfo> bindItems(ArrayList<ShortcutInfo> items) {
-        ArrayList<View> icons = new ArrayList<View>();
-        ArrayList<ShortcutInfo> extra = new ArrayList<ShortcutInfo>();
+        ArrayList<View> icons = new ArrayList<>();
+        ArrayList<ShortcutInfo> extra = new ArrayList<>();
 
         for (ShortcutInfo item : items) {
             if (!ALLOW_FOLDER_SCROLL && icons.size() >= mMaxItemsPerPage) {
@@ -328,7 +326,7 @@
 
     @SuppressLint("RtlHardcoded")
     private void arrangeChildren(ArrayList<View> list, int itemCount, boolean saveChanges) {
-        ArrayList<CellLayout> pages = new ArrayList<CellLayout>();
+        ArrayList<CellLayout> pages = new ArrayList<>();
         for (int i = 0; i < getChildCount(); i++) {
             CellLayout page = (CellLayout) getChildAt(i);
             page.removeAllViews();
@@ -535,7 +533,7 @@
      */
     public void completePendingPageChanges() {
         if (!mPendingAnimations.isEmpty()) {
-            HashMap<View, Runnable> pendingViews = new HashMap<>(mPendingAnimations);
+            ArrayMap<View, Runnable> pendingViews = new ArrayMap<>(mPendingAnimations);
             for (Map.Entry<View, Runnable> e : pendingViews.entrySet()) {
                 e.getKey().animate().cancel();
                 e.getValue().run();