diff --git a/src/com/android/launcher3/IconCache.java b/src/com/android/launcher3/IconCache.java
index 6f86954..573e8a2 100644
--- a/src/com/android/launcher3/IconCache.java
+++ b/src/com/android/launcher3/IconCache.java
@@ -123,7 +123,7 @@
     }
 
     private Drawable getFullResDefaultActivityIcon() {
-        return getFullResIcon(Resources.getSystem(), Utilities.isAtLeastO() ?
+        return getFullResIcon(Resources.getSystem(), Utilities.ATLEAST_OREO ?
                 android.R.drawable.sym_def_app_icon : android.R.mipmap.sym_def_app_icon);
     }
 
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 60d2e81..61d12dd 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -1132,7 +1132,7 @@
             // On O and above we there is always some setting present settings (add icon to
             // home screen or icon badging). On earlier APIs we will have the allow rotation
             // setting, on devices with a locked orientation,
-            return Utilities.isAtLeastO() || !getResources().getBoolean(R.bool.allow_rotation);
+            return Utilities.ATLEAST_OREO || !getResources().getBoolean(R.bool.allow_rotation);
         }
     }
 
@@ -1414,7 +1414,7 @@
         CellLayout layout = getCellLayout(container, screenId);
 
         ShortcutInfo info = null;
-        if (Utilities.isAtLeastO()) {
+        if (Utilities.ATLEAST_OREO) {
             info = LauncherAppsCompatVO.createShortcutInfoFromPinItemRequest(
                     this, LauncherAppsCompatVO.getPinItemRequest(data), 0);
         }
diff --git a/src/com/android/launcher3/LauncherAppWidgetHostView.java b/src/com/android/launcher3/LauncherAppWidgetHostView.java
index c7b7782..b65b74e 100644
--- a/src/com/android/launcher3/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/LauncherAppWidgetHostView.java
@@ -92,7 +92,7 @@
         setAccessibilityDelegate(Launcher.getLauncher(context).getAccessibilityDelegate());
         setBackgroundResource(R.drawable.widget_internal_focus_bg);
 
-        if (Utilities.isAtLeastO()) {
+        if (Utilities.ATLEAST_OREO) {
             setExecutor(Utilities.THREAD_POOL_EXECUTOR);
         }
     }
diff --git a/src/com/android/launcher3/SessionCommitReceiver.java b/src/com/android/launcher3/SessionCommitReceiver.java
index 8caba75..edb7ff5 100644
--- a/src/com/android/launcher3/SessionCommitReceiver.java
+++ b/src/com/android/launcher3/SessionCommitReceiver.java
@@ -59,7 +59,7 @@
 
     @Override
     public void onReceive(Context context, Intent intent) {
-        if (!isEnabled(context) || !Utilities.isAtLeastO()) {
+        if (!isEnabled(context) || !Utilities.ATLEAST_OREO) {
             // User has decided to not add icons on homescreen.
             return;
         }
@@ -92,7 +92,7 @@
     }
 
     public static void applyDefaultUserPrefs(final Context context) {
-        if (!Utilities.isAtLeastO()) {
+        if (!Utilities.ATLEAST_OREO) {
             return;
         }
         SharedPreferences prefs = Utilities.getPrefs(context);
diff --git a/src/com/android/launcher3/SettingsActivity.java b/src/com/android/launcher3/SettingsActivity.java
index 5bdc1f5..d40ac8f 100644
--- a/src/com/android/launcher3/SettingsActivity.java
+++ b/src/com/android/launcher3/SettingsActivity.java
@@ -94,7 +94,7 @@
 
             ButtonPreference iconBadgingPref =
                     (ButtonPreference) findPreference(ICON_BADGING_PREFERENCE_KEY);
-            if (!Utilities.isAtLeastO()) {
+            if (!Utilities.ATLEAST_OREO) {
                 getPreferenceScreen().removePreference(
                         findPreference(SessionCommitReceiver.ADD_ICON_PREFERENCE_KEY));
                 getPreferenceScreen().removePreference(iconBadgingPref);
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 3aa2db0..b6876f6 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -83,15 +83,17 @@
     private static final Matrix sMatrix = new Matrix();
     private static final Matrix sInverseMatrix = new Matrix();
 
-    public static boolean isAtLeastO() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
-    }
+    public static final boolean ATLEAST_OREO_MR1 =
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1;
+
+    public static final boolean ATLEAST_OREO =
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
 
     public static final boolean ATLEAST_NOUGAT_MR1 =
-        Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1;
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1;
 
     public static final boolean ATLEAST_NOUGAT =
-        Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
 
     public static final boolean ATLEAST_MARSHMALLOW =
             Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
diff --git a/src/com/android/launcher3/compat/AppWidgetManagerCompat.java b/src/com/android/launcher3/compat/AppWidgetManagerCompat.java
index 4e00eae..a77a87f 100644
--- a/src/com/android/launcher3/compat/AppWidgetManagerCompat.java
+++ b/src/com/android/launcher3/compat/AppWidgetManagerCompat.java
@@ -40,7 +40,7 @@
     public static AppWidgetManagerCompat getInstance(Context context) {
         synchronized (sInstanceLock) {
             if (sInstance == null) {
-                if (Utilities.isAtLeastO()) {
+                if (Utilities.ATLEAST_OREO) {
                     sInstance = new AppWidgetManagerCompatVO(context.getApplicationContext());
                 } else {
                     sInstance = new AppWidgetManagerCompatVL(context.getApplicationContext());
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompat.java b/src/com/android/launcher3/compat/LauncherAppsCompat.java
index 75a2a5d..2cac536 100644
--- a/src/com/android/launcher3/compat/LauncherAppsCompat.java
+++ b/src/com/android/launcher3/compat/LauncherAppsCompat.java
@@ -53,7 +53,7 @@
     public static LauncherAppsCompat getInstance(Context context) {
         synchronized (sInstanceLock) {
             if (sInstance == null) {
-                if (Utilities.isAtLeastO()) {
+                if (Utilities.ATLEAST_OREO) {
                     sInstance = new LauncherAppsCompatVO(context.getApplicationContext());
                 } else {
                     sInstance = new LauncherAppsCompatVL(context.getApplicationContext());
diff --git a/src/com/android/launcher3/compat/WallpaperManagerCompat.java b/src/com/android/launcher3/compat/WallpaperManagerCompat.java
index cbcabdf..00258c7 100644
--- a/src/com/android/launcher3/compat/WallpaperManagerCompat.java
+++ b/src/com/android/launcher3/compat/WallpaperManagerCompat.java
@@ -31,10 +31,10 @@
             if (sInstance == null) {
                 context = context.getApplicationContext();
 
-                if (Utilities.isAtLeastO()) {
+                if (Utilities.ATLEAST_OREO) {
                     try {
                         sInstance = new WallpaperManagerCompatVOMR1(context);
-                    } catch (Exception e) {
+                    } catch (Throwable e) {
                         // The wallpaper APIs do not yet exist
                     }
                 }
diff --git a/src/com/android/launcher3/compat/WallpaperManagerCompatVOMR1.java b/src/com/android/launcher3/compat/WallpaperManagerCompatVOMR1.java
index 28b780a..524f266 100644
--- a/src/com/android/launcher3/compat/WallpaperManagerCompatVOMR1.java
+++ b/src/com/android/launcher3/compat/WallpaperManagerCompatVOMR1.java
@@ -35,8 +35,9 @@
     private final WallpaperManager mWm;
     private Method mWCColorHintsMethod;
 
-    WallpaperManagerCompatVOMR1(Context context) throws Exception {
+    WallpaperManagerCompatVOMR1(Context context) throws Throwable {
         mWm = context.getSystemService(WallpaperManager.class);
+        String className = WallpaperColors.class.getName();
         try {
             mWCColorHintsMethod = WallpaperColors.class.getDeclaredMethod("getColorHints");
         } catch (Exception exc) {
diff --git a/src/com/android/launcher3/dragndrop/DragView.java b/src/com/android/launcher3/dragndrop/DragView.java
index e81e2a3..33d4fa6 100644
--- a/src/com/android/launcher3/dragndrop/DragView.java
+++ b/src/com/android/launcher3/dragndrop/DragView.java
@@ -193,7 +193,7 @@
      */
     @TargetApi(Build.VERSION_CODES.O)
     public void setItemInfo(final ItemInfo info) {
-        if (!(FeatureFlags.LAUNCHER3_SPRING_ICONS && Utilities.isAtLeastO())) {
+        if (!(FeatureFlags.LAUNCHER3_SPRING_ICONS && Utilities.ATLEAST_OREO)) {
             return;
         }
         if (info.itemType != LauncherSettings.Favorites.ITEM_TYPE_APPLICATION &&
diff --git a/src/com/android/launcher3/dragndrop/PinItemDragListener.java b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
index c8d3890..b9d97ac 100644
--- a/src/com/android/launcher3/dragndrop/PinItemDragListener.java
+++ b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
@@ -128,7 +128,7 @@
     }
 
     public static boolean handleDragRequest(Launcher launcher, Intent intent) {
-        if (!Utilities.isAtLeastO()) {
+        if (!Utilities.ATLEAST_OREO) {
             return false;
         }
         if (intent == null || !Intent.ACTION_MAIN.equals(intent.getAction())) {
diff --git a/src/com/android/launcher3/graphics/DrawableFactory.java b/src/com/android/launcher3/graphics/DrawableFactory.java
index 45344c0..371479b 100644
--- a/src/com/android/launcher3/graphics/DrawableFactory.java
+++ b/src/com/android/launcher3/graphics/DrawableFactory.java
@@ -80,7 +80,7 @@
 
 
     protected Path getPreloadProgressPath(Context context) {
-        if (Utilities.isAtLeastO()) {
+        if (Utilities.ATLEAST_OREO) {
             try {
                 // Try to load the path from Mask Icon
                 Drawable icon = context.getDrawable(R.drawable.adaptive_icon_drawable_wrapper);
diff --git a/src/com/android/launcher3/graphics/IconNormalizer.java b/src/com/android/launcher3/graphics/IconNormalizer.java
index 8ed62bc..28fc423 100644
--- a/src/com/android/launcher3/graphics/IconNormalizer.java
+++ b/src/com/android/launcher3/graphics/IconNormalizer.java
@@ -231,7 +231,7 @@
      */
     public synchronized float getScale(@NonNull Drawable d, @Nullable RectF outBounds,
             @Nullable Path path, @Nullable boolean[] outMaskShape) {
-        if (Utilities.isAtLeastO() && d instanceof AdaptiveIconDrawable &&
+        if (Utilities.ATLEAST_OREO && d instanceof AdaptiveIconDrawable &&
                 mAdaptiveIconScale != SCALE_NOT_INITIALIZED) {
             if (outBounds != null) {
                 outBounds.set(mAdaptiveIconBounds);
@@ -347,7 +347,7 @@
         float areaScale = area / (width * height);
         // Use sqrt of the final ratio as the images is scaled across both width and height.
         float scale = areaScale > scaleRequired ? (float) Math.sqrt(scaleRequired / areaScale) : 1;
-        if (Utilities.isAtLeastO() && d instanceof AdaptiveIconDrawable &&
+        if (Utilities.ATLEAST_OREO && d instanceof AdaptiveIconDrawable &&
                 mAdaptiveIconScale == SCALE_NOT_INITIALIZED) {
             mAdaptiveIconScale = scale;
             mAdaptiveIconBounds.set(mBounds);
diff --git a/src/com/android/launcher3/graphics/IconShapeOverride.java b/src/com/android/launcher3/graphics/IconShapeOverride.java
index 654fa98..223243b 100644
--- a/src/com/android/launcher3/graphics/IconShapeOverride.java
+++ b/src/com/android/launcher3/graphics/IconShapeOverride.java
@@ -59,7 +59,7 @@
     private static final int RESTART_REQUEST_CODE = 42; // the answer to everything
 
     public static boolean isSupported(Context context) {
-        if (!Utilities.isAtLeastO()) {
+        if (!Utilities.ATLEAST_OREO) {
             return false;
         }
         // Only supported when developer settings is enabled
@@ -82,7 +82,7 @@
     }
 
     public static void apply(Context context) {
-        if (!Utilities.isAtLeastO()) {
+        if (!Utilities.ATLEAST_OREO) {
             return;
         }
         String path = getAppliedValue(context);
diff --git a/src/com/android/launcher3/graphics/LauncherIcons.java b/src/com/android/launcher3/graphics/LauncherIcons.java
index 7c80c30..d55baf0 100644
--- a/src/com/android/launcher3/graphics/LauncherIcons.java
+++ b/src/com/android/launcher3/graphics/LauncherIcons.java
@@ -104,7 +104,7 @@
         float scale = 1f;
         if (!FeatureFlags.LAUNCHER3_DISABLE_ICON_NORMALIZATION) {
             normalizer = IconNormalizer.getInstance(context);
-            if (Utilities.isAtLeastO() && iconAppTargetSdk >= Build.VERSION_CODES.O) {
+            if (Utilities.ATLEAST_OREO && iconAppTargetSdk >= Build.VERSION_CODES.O) {
                 boolean[] outShape = new boolean[1];
                 AdaptiveIconDrawable dr = (AdaptiveIconDrawable)
                         context.getDrawable(R.drawable.adaptive_icon_drawable_wrapper).mutate();
@@ -123,7 +123,7 @@
             }
         }
         Bitmap bitmap = createIconBitmap(icon, context, scale);
-        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.isAtLeastO() &&
+        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.ATLEAST_OREO &&
                 icon instanceof AdaptiveIconDrawable) {
             bitmap = ShadowGenerator.getInstance(context).recreateIcon(bitmap);
         }
@@ -158,13 +158,13 @@
         float scale = 1f;
         if (!FeatureFlags.LAUNCHER3_DISABLE_ICON_NORMALIZATION) {
             normalizer = IconNormalizer.getInstance(context);
-            if (Utilities.isAtLeastO() && iconAppTargetSdk >= Build.VERSION_CODES.O) {
+            if (Utilities.ATLEAST_OREO && iconAppTargetSdk >= Build.VERSION_CODES.O) {
                 boolean[] outShape = new boolean[1];
                 AdaptiveIconDrawable dr = (AdaptiveIconDrawable)
                         context.getDrawable(R.drawable.adaptive_icon_drawable_wrapper).mutate();
                 dr.setBounds(0, 0, 1, 1);
                 scale = normalizer.getScale(icon, iconBounds, dr.getIconMask(), outShape);
-                if (Utilities.isAtLeastO() && FeatureFlags.LEGACY_ICON_TREATMENT &&
+                if (Utilities.ATLEAST_OREO && FeatureFlags.LEGACY_ICON_TREATMENT &&
                         !outShape[0]) {
                     Drawable wrappedIcon = wrapToAdaptiveIconDrawable(context, icon, scale);
                     if (wrappedIcon != icon) {
@@ -213,12 +213,12 @@
      */
     public static Bitmap createIconBitmap(Drawable icon, Context context) {
         float scale = 1f;
-        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.isAtLeastO() &&
+        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.ATLEAST_OREO &&
                 icon instanceof AdaptiveIconDrawable) {
             scale = ShadowGenerator.getScaleForBounds(new RectF(0, 0, 0, 0));
         }
         Bitmap bitmap =  createIconBitmap(icon, context, scale);
-        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.isAtLeastO() &&
+        if (FeatureFlags.ADAPTIVE_ICON_SHADOW && Utilities.ATLEAST_OREO &&
                 icon instanceof AdaptiveIconDrawable) {
             bitmap = ShadowGenerator.getInstance(context).recreateIcon(bitmap);
         }
@@ -271,7 +271,7 @@
             final int top = (textureHeight-height) / 2;
 
             sOldBounds.set(icon.getBounds());
-            if (Utilities.isAtLeastO() && icon instanceof AdaptiveIconDrawable) {
+            if (Utilities.ATLEAST_OREO && icon instanceof AdaptiveIconDrawable) {
                 int offset = Math.max((int)(ShadowGenerator.BLUR_FACTOR * iconBitmapSize),
                         Math.min(left, top));
                 int size = Math.max(width, height);
@@ -296,7 +296,7 @@
      * create AdaptiveIconDrawable.
      */
     static Drawable wrapToAdaptiveIconDrawable(Context context, Drawable drawable, float scale) {
-        if (!(FeatureFlags.LEGACY_ICON_TREATMENT && Utilities.isAtLeastO())) {
+        if (!(FeatureFlags.LEGACY_ICON_TREATMENT && Utilities.ATLEAST_OREO)) {
             return drawable;
         }
 
diff --git a/src/com/android/launcher3/graphics/ShadowDrawable.java b/src/com/android/launcher3/graphics/ShadowDrawable.java
index ffcedb2..b40bf78 100644
--- a/src/com/android/launcher3/graphics/ShadowDrawable.java
+++ b/src/com/android/launcher3/graphics/ShadowDrawable.java
@@ -146,7 +146,7 @@
             d.draw(canvas);
         }
 
-        if (Utilities.isAtLeastO()) {
+        if (Utilities.ATLEAST_OREO) {
             bitmap = bitmap.copy(Bitmap.Config.HARDWARE, false);
         }
         mState.mLastDrawnBitmap = bitmap;
diff --git a/src/com/android/launcher3/model/PackageUpdatedTask.java b/src/com/android/launcher3/model/PackageUpdatedTask.java
index 13962a2..fa77619 100644
--- a/src/com/android/launcher3/model/PackageUpdatedTask.java
+++ b/src/com/android/launcher3/model/PackageUpdatedTask.java
@@ -101,7 +101,7 @@
                     appsList.addPackage(context, packages[i], mUser);
 
                     // Automatically add homescreen icon for work profile apps for below O device.
-                    if (!Utilities.isAtLeastO() && !Process.myUserHandle().equals(mUser)) {
+                    if (!Utilities.ATLEAST_OREO && !Process.myUserHandle().equals(mUser)) {
                         SessionCommitReceiver.queueAppIconAddition(context, packages[i], mUser);
                     }
                 }
@@ -342,7 +342,7 @@
                     callbacks.notifyWidgetProvidersChanged();
                 }
             });
-        } else if (Utilities.isAtLeastO() && mOp == OP_ADD) {
+        } else if (Utilities.ATLEAST_OREO && mOp == OP_ADD) {
             // Load widgets for the new package.
             for (int i = 0; i < N; i++) {
                 dataModel.widgetsModel.update(app, new PackageUserKey(packages[i], mUser));
diff --git a/src/com/android/launcher3/util/ManagedProfileHeuristic.java b/src/com/android/launcher3/util/ManagedProfileHeuristic.java
index 091dd84..009aee7 100644
--- a/src/com/android/launcher3/util/ManagedProfileHeuristic.java
+++ b/src/com/android/launcher3/util/ManagedProfileHeuristic.java
@@ -67,7 +67,7 @@
             return;
         }
 
-        if (Utilities.isAtLeastO() && !SessionCommitReceiver.isEnabled(context)) {
+        if (Utilities.ATLEAST_OREO && !SessionCommitReceiver.isEnabled(context)) {
             // Just mark the folder id preference to avoid new folder creation later.
             ufi.prefs.edit().putLong(ufi.folderIdKey, ItemInfo.NO_ID).apply();
             return;
diff --git a/src/com/android/launcher3/util/SystemUiController.java b/src/com/android/launcher3/util/SystemUiController.java
index d7a2625..edbf05a 100644
--- a/src/com/android/launcher3/util/SystemUiController.java
+++ b/src/com/android/launcher3/util/SystemUiController.java
@@ -59,7 +59,7 @@
         // Apply the state flags in priority order
         int newFlags = oldFlags;
         for (int stateFlag : mStates) {
-            if (Utilities.isAtLeastO()) {
+            if (Utilities.ATLEAST_OREO) {
                 if ((stateFlag & FLAG_LIGHT_NAV) != 0) {
                     newFlags |= View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
                 } else if ((stateFlag & FLAG_DARK_NAV) != 0) {