Fix the issue that on tablet/unfold, the allapps background color is wrong. am: aa6612d373 am: 64746f8a29

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24030571

Change-Id: I9f00b40302eba3683f2260f5efa5e5dbc3566f38
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java b/src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java
index 9b7a05f..eb4ecaf 100644
--- a/src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java
@@ -45,7 +45,6 @@
 import android.util.FloatProperty;
 import android.util.Log;
 import android.util.SparseArray;
-import android.util.TypedValue;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
@@ -284,9 +283,8 @@
                 0,
                 0 // Bottom left
         };
-        final TypedValue value = new TypedValue();
-        getContext().getTheme().resolveAttribute(android.R.attr.colorBackground, value, true);
-        mBottomSheetBackgroundColor = value.data;
+        mBottomSheetBackgroundColor =
+                Themes.getAttrColor(getContext(), R.attr.materialColorSurfaceDim);
         updateBackgroundVisibility(mActivityContext.getDeviceProfile());
         mSearchUiManager.initializeSearch(this);
     }