Remove Background color API.

Remove Color API for beta release while we handle feedback.

The beta has not actually gone out.  API changes have been approved by
API council.

Relnote: Remove background color API for stable.

Bug: 267637107
Test: n/a
Merged-In: I34c3ecf8bbb63a0229633268c58a67da9dc51642
Change-Id: I34c3ecf8bbb63a0229633268c58a67da9dc51642
diff --git a/window/extensions/extensions/api/1.1.0-beta01.txt b/window/extensions/extensions/api/1.1.0-beta01.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/1.1.0-beta01.txt
+++ b/window/extensions/extensions/api/1.1.0-beta01.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/api/current.txt b/window/extensions/extensions/api/current.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/current.txt
+++ b/window/extensions/extensions/api/current.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/api/public_plus_experimental_1.1.0-beta01.txt b/window/extensions/extensions/api/public_plus_experimental_1.1.0-beta01.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/public_plus_experimental_1.1.0-beta01.txt
+++ b/window/extensions/extensions/api/public_plus_experimental_1.1.0-beta01.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/api/public_plus_experimental_current.txt b/window/extensions/extensions/api/public_plus_experimental_current.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/public_plus_experimental_current.txt
+++ b/window/extensions/extensions/api/public_plus_experimental_current.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/api/restricted_1.1.0-beta01.txt b/window/extensions/extensions/api/restricted_1.1.0-beta01.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/restricted_1.1.0-beta01.txt
+++ b/window/extensions/extensions/api/restricted_1.1.0-beta01.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/api/restricted_current.txt b/window/extensions/extensions/api/restricted_current.txt
index 6988f4b..6e04de6 100644
--- a/window/extensions/extensions/api/restricted_current.txt
+++ b/window/extensions/extensions/api/restricted_current.txt
@@ -66,16 +66,13 @@
   }
 
   public class SplitAttributes {
-    method @ColorInt public int getAnimationBackgroundColor();
     method public int getLayoutDirection();
     method public androidx.window.extensions.embedding.SplitAttributes.SplitType getSplitType();
-    field @ColorInt public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0; // 0x0
   }
 
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.extensions.embedding.SplitAttributes build();
-    method public androidx.window.extensions.embedding.SplitAttributes.Builder setAnimationBackgroundColor(@ColorInt int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setLayoutDirection(int);
     method public androidx.window.extensions.embedding.SplitAttributes.Builder setSplitType(androidx.window.extensions.embedding.SplitAttributes.SplitType);
   }
diff --git a/window/extensions/extensions/src/main/java/androidx/window/extensions/embedding/SplitAttributes.java b/window/extensions/extensions/src/main/java/androidx/window/extensions/embedding/SplitAttributes.java
index e4f1e81..e00e910 100644
--- a/window/extensions/extensions/src/main/java/androidx/window/extensions/embedding/SplitAttributes.java
+++ b/window/extensions/extensions/src/main/java/androidx/window/extensions/embedding/SplitAttributes.java
@@ -16,6 +16,7 @@
 
 package androidx.window.extensions.embedding;
 
+import static androidx.annotation.RestrictTo.Scope.LIBRARY;
 import static androidx.window.extensions.embedding.SplitAttributes.LayoutDirection.BOTTOM_TO_TOP;
 import static androidx.window.extensions.embedding.SplitAttributes.LayoutDirection.LEFT_TO_RIGHT;
 import static androidx.window.extensions.embedding.SplitAttributes.LayoutDirection.LOCALE;
@@ -30,6 +31,7 @@
 import androidx.annotation.IntDef;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.annotation.RestrictTo;
 import androidx.window.extensions.core.util.function.Function;
 
 import java.lang.annotation.Retention;
@@ -78,6 +80,7 @@
      * @see Builder#setAnimationBackgroundColor(int)
      */
     @ColorInt
+    @RestrictTo(LIBRARY)
     public static final int DEFAULT_ANIMATION_BACKGROUND_COLOR = 0;
 
     /**
@@ -433,6 +436,7 @@
      * @return The animation background {@code ColorInt}.
      */
     @ColorInt
+    @RestrictTo(LIBRARY)
     public int getAnimationBackgroundColor() {
         return mAnimationBackgroundColor;
     }
@@ -509,6 +513,7 @@
          * @return This {@code Builder}.
          */
         @NonNull
+        @RestrictTo(LIBRARY)
         public Builder setAnimationBackgroundColor(@ColorInt int color) {
             // Any non-opaque color will be treated as the default.
             mAnimationBackgroundColor = Color.alpha(color) != 255
diff --git a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/DemoActivityEmbeddingController.kt b/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/DemoActivityEmbeddingController.kt
deleted file mode 100644
index 69542ac..0000000
--- a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/DemoActivityEmbeddingController.kt
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright 2022 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 androidx.window.demo.embedding
-
-import androidx.annotation.GuardedBy
-import androidx.window.embedding.SplitAttributes
-import java.util.concurrent.locks.ReentrantLock
-import kotlin.concurrent.withLock
-
-/** A singleton controller to manage the global config. */
-class DemoActivityEmbeddingController private constructor() {
-
-    private val lock = Object()
-
-    @GuardedBy("lock")
-    private var _animationBackgroundColor = SplitAttributes.BackgroundColor.DEFAULT
-
-    /** Animation background color to use when the animation requires a background. */
-    var animationBackgroundColor: SplitAttributes.BackgroundColor
-        get() = synchronized(lock) {
-            _animationBackgroundColor
-        }
-        set(value) = synchronized(lock) {
-            _animationBackgroundColor = value
-        }
-
-    companion object {
-        @Volatile
-        private var globalInstance: DemoActivityEmbeddingController? = null
-        private val globalLock = ReentrantLock()
-
-        /**
-         * Obtains the singleton instance of [DemoActivityEmbeddingController].
-         */
-        @JvmStatic
-        fun getInstance(): DemoActivityEmbeddingController {
-            if (globalInstance == null) {
-                globalLock.withLock {
-                    if (globalInstance == null) {
-                        globalInstance = DemoActivityEmbeddingController()
-                    }
-                }
-            }
-            return globalInstance!!
-        }
-    }
-}
\ No newline at end of file
diff --git a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/ExampleWindowInitializer.kt b/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/ExampleWindowInitializer.kt
index 95a6ea2..ca1dd94 100644
--- a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/ExampleWindowInitializer.kt
+++ b/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/ExampleWindowInitializer.kt
@@ -48,7 +48,6 @@
  */
 @OptIn(ExperimentalWindowApi::class)
 class ExampleWindowInitializer : Initializer<RuleController> {
-    private val mDemoActivityEmbeddingController = DemoActivityEmbeddingController.getInstance()
 
     override fun create(context: Context): RuleController {
         SplitController.getInstance(context).apply {
@@ -84,11 +83,9 @@
         val shouldReversed = tag?.contains(SUFFIX_REVERSED) ?: false
         // Make a copy of the default splitAttributes, but replace the animation background
         // color to what is configured in the Demo app.
-        val backgroundColor = mDemoActivityEmbeddingController.animationBackgroundColor
         val defaultSplitAttributes = SplitAttributes.Builder()
             .setLayoutDirection(params.defaultSplitAttributes.layoutDirection)
             .setSplitType(params.defaultSplitAttributes.splitType)
-            .setAnimationBackgroundColor(backgroundColor)
             .build()
         when (tag?.substringBefore(SUFFIX_REVERSED)) {
             TAG_USE_DEFAULT_SPLIT_ATTRIBUTES, null -> {
@@ -114,7 +111,6 @@
                                 TOP_TO_BOTTOM
                             }
                         )
-                        .setAnimationBackgroundColor(backgroundColor)
                         .build()
                 } else if (isPortrait) {
                     return expandContainersAttrs
@@ -131,7 +127,6 @@
                                 TOP_TO_BOTTOM
                             }
                         )
-                        .setAnimationBackgroundColor(backgroundColor)
                         .build()
                 }
             }
@@ -159,7 +154,6 @@
                                 TOP_TO_BOTTOM
                             }
                         )
-                        .setAnimationBackgroundColor(backgroundColor)
                         .build()
                 } else {
                     SplitAttributes.Builder()
@@ -171,7 +165,6 @@
                                 LEFT_TO_RIGHT
                             }
                         )
-                        .setAnimationBackgroundColor(backgroundColor)
                         .build()
                 }
             }
@@ -195,7 +188,6 @@
                                 if (shouldReversed) RIGHT_TO_LEFT else LEFT_TO_RIGHT
                             }
                         )
-                        .setAnimationBackgroundColor(backgroundColor)
                         .build()
                 }
             }
diff --git a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/SplitDeviceStateActivityBase.kt b/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/SplitDeviceStateActivityBase.kt
index 680d8d2..726726f 100644
--- a/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/SplitDeviceStateActivityBase.kt
+++ b/window/window-demos/demo/src/main/java/androidx/window/demo/embedding/SplitDeviceStateActivityBase.kt
@@ -18,11 +18,9 @@
 
 import android.content.ComponentName
 import android.content.Intent
-import android.graphics.Color
 import android.os.Bundle
 import android.view.View
 import android.widget.AdapterView
-import android.widget.ArrayAdapter
 import android.widget.CompoundButton
 import android.widget.RadioGroup
 import android.widget.Toast
@@ -36,8 +34,8 @@
 import androidx.window.embedding.EmbeddingRule
 import androidx.window.embedding.RuleController
 import androidx.window.embedding.SplitAttributes
-import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
+import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
 import androidx.window.embedding.SplitController
 import androidx.window.embedding.SplitController.SplitSupportStatus.Companion.SPLIT_AVAILABLE
 import androidx.window.embedding.SplitInfo
@@ -64,9 +62,6 @@
     private lateinit var activityA: ComponentName
     private lateinit var activityB: ComponentName
 
-    /** Controller to manage the global configuration. */
-    private val demoActivityEmbeddingController = DemoActivityEmbeddingController.getInstance()
-
     /** The last selected split rule id. */
     private var lastCheckedRuleId = 0
 
@@ -89,31 +84,6 @@
         activityA = ComponentName(this, SplitDeviceStateActivityA::class.java.name)
         activityB = ComponentName(this, SplitDeviceStateActivityB::class.java.name)
 
-        val radioGroup = viewBinding.splitAttributesOptionsRadioGroup
-        val animationBgColorDropdown = viewBinding.animationBackgroundColorDropdown
-        if (componentName == activityA) {
-            // Set to the first option
-            demoActivityEmbeddingController.animationBackgroundColor =
-                ANIMATION_BACKGROUND_COLORS_VALUE[0]
-            radioGroup.check(R.id.use_default_split_attributes)
-            onCheckedChanged(radioGroup, radioGroup.checkedRadioButtonId)
-            radioGroup.setOnCheckedChangeListener(this)
-            animationBgColorDropdown.adapter = ArrayAdapter(
-                this,
-                android.R.layout.simple_spinner_dropdown_item,
-                ANIMATION_BACKGROUND_COLORS_TEXT
-            )
-            animationBgColorDropdown.onItemSelectedListener = this
-        } else {
-            // Only update split pair rule on the primary Activity. The secondary Activity can only
-            // finish itself to prevent confusing users. We only apply the rule when the Activity is
-            // launched from the primary.
-            viewBinding.chooseLayoutTextView.visibility = View.GONE
-            radioGroup.visibility = View.GONE
-            animationBgColorDropdown.visibility = View.GONE
-            viewBinding.launchActivityToSide.text = "Finish this Activity"
-        }
-
         viewBinding.showHorizontalLayoutInTabletopCheckBox.setOnCheckedChangeListener(this)
         viewBinding.showFullscreenInBookModeCheckBox.setOnCheckedChangeListener(this)
         viewBinding.swapPrimarySecondaryPositionCheckBox.setOnCheckedChangeListener(this)
@@ -129,7 +99,6 @@
             hideAllSubCheckBoxes()
             // Add the error message to notify the SplitAttributesCalculator is not available.
             viewBinding.errorMessageTextView.text = "SplitAttributesCalculator is not supported!"
-            animationBgColorDropdown.isEnabled = false
         }
 
         lifecycleScope.launch {
@@ -187,8 +156,6 @@
     }
 
     override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
-        demoActivityEmbeddingController.animationBackgroundColor =
-            ANIMATION_BACKGROUND_COLORS_VALUE[position]
         updateSplitPairRuleWithRadioButtonId(lastCheckedRuleId)
     }
 
@@ -266,7 +233,6 @@
         val defaultSplitAttributes = SplitAttributes.Builder()
             .setSplitType(SPLIT_TYPE_EQUAL)
             .setLayoutDirection(SplitAttributes.LayoutDirection.LOCALE)
-            .setAnimationBackgroundColor(demoActivityEmbeddingController.animationBackgroundColor)
             .build()
         // Use the tag to control the rule how to change split attributes with the current state
         var tag = when (id) {
@@ -404,13 +370,6 @@
         const val SUFFIX_REVERSED = "_reversed"
         const val SUFFIX_AND_HORIZONTAL_LAYOUT_IN_TABLETOP = "_and_horizontal_layout_in_tabletop"
         const val SUFFIX_AND_FULLSCREEN_IN_BOOK_MODE = "_and_fullscreen_in_book_mode"
-        val ANIMATION_BACKGROUND_COLORS_TEXT = arrayOf("DEFAULT", "BLUE", "GREEN", "YELLOW")
-        val ANIMATION_BACKGROUND_COLORS_VALUE = arrayOf(
-            SplitAttributes.BackgroundColor.DEFAULT,
-            SplitAttributes.BackgroundColor.color(Color.BLUE),
-            SplitAttributes.BackgroundColor.color(Color.GREEN),
-            SplitAttributes.BackgroundColor.color(Color.YELLOW)
-        )
 
         /**
          * The default minimum dimension for large screen devices.
diff --git a/window/window-demos/demo/src/main/res/layout/activity_split_device_state_layout.xml b/window/window-demos/demo/src/main/res/layout/activity_split_device_state_layout.xml
index eb67379..b996f71 100644
--- a/window/window-demos/demo/src/main/res/layout/activity_split_device_state_layout.xml
+++ b/window/window-demos/demo/src/main/res/layout/activity_split_device_state_layout.xml
@@ -151,19 +151,6 @@
             android:background="#AAAAAA" />
 
         <!-- Dropdown for animation background color -->
-
-        <TextView
-            android:id="@+id/animation_background_color_text_view"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/current_animation_background_color"/>
-
-        <Spinner
-            android:id="@+id/animation_background_color_dropdown"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:spinnerMode="dropdown" />
-
         <View
             android:layout_width="match_parent"
             android:layout_height="1dp"
diff --git a/window/window/api/1.1.0-beta01.txt b/window/window/api/1.1.0-beta01.txt
index 61229e4..5617dbb 100644
--- a/window/window/api/1.1.0-beta01.txt
+++ b/window/window/api/1.1.0-beta01.txt
@@ -84,29 +84,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/api/current.txt b/window/window/api/current.txt
index 61229e4..5617dbb 100644
--- a/window/window/api/current.txt
+++ b/window/window/api/current.txt
@@ -84,29 +84,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/api/public_plus_experimental_1.1.0-beta01.txt b/window/window/api/public_plus_experimental_1.1.0-beta01.txt
index 650afbe..0ac0175 100644
--- a/window/window/api/public_plus_experimental_1.1.0-beta01.txt
+++ b/window/window/api/public_plus_experimental_1.1.0-beta01.txt
@@ -91,29 +91,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/api/public_plus_experimental_current.txt b/window/window/api/public_plus_experimental_current.txt
index 650afbe..0ac0175 100644
--- a/window/window/api/public_plus_experimental_current.txt
+++ b/window/window/api/public_plus_experimental_current.txt
@@ -91,29 +91,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/api/restricted_1.1.0-beta01.txt b/window/window/api/restricted_1.1.0-beta01.txt
index 61229e4..5617dbb 100644
--- a/window/window/api/restricted_1.1.0-beta01.txt
+++ b/window/window/api/restricted_1.1.0-beta01.txt
@@ -84,29 +84,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/api/restricted_current.txt b/window/window/api/restricted_current.txt
index 61229e4..5617dbb 100644
--- a/window/window/api/restricted_current.txt
+++ b/window/window/api/restricted_current.txt
@@ -84,29 +84,16 @@
   }
 
   public final class SplitAttributes {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor getAnimationBackgroundColor();
     method public androidx.window.embedding.SplitAttributes.LayoutDirection getLayoutDirection();
     method public androidx.window.embedding.SplitAttributes.SplitType getSplitType();
-    property public final androidx.window.embedding.SplitAttributes.BackgroundColor animationBackgroundColor;
     property public final androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection;
     property public final androidx.window.embedding.SplitAttributes.SplitType splitType;
     field public static final androidx.window.embedding.SplitAttributes.Companion Companion;
   }
 
-  public static final class SplitAttributes.BackgroundColor {
-    method public static androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor.Companion Companion;
-    field public static final androidx.window.embedding.SplitAttributes.BackgroundColor DEFAULT;
-  }
-
-  public static final class SplitAttributes.BackgroundColor.Companion {
-    method public androidx.window.embedding.SplitAttributes.BackgroundColor color(@ColorInt @IntRange(from=android.graphics.Color.BLACK.toLong(), to=android.graphics.Color.WHITE.toLong()) int color);
-  }
-
   public static final class SplitAttributes.Builder {
     ctor public SplitAttributes.Builder();
     method public androidx.window.embedding.SplitAttributes build();
-    method public androidx.window.embedding.SplitAttributes.Builder setAnimationBackgroundColor(androidx.window.embedding.SplitAttributes.BackgroundColor color);
     method public androidx.window.embedding.SplitAttributes.Builder setLayoutDirection(androidx.window.embedding.SplitAttributes.LayoutDirection layoutDirection);
     method public androidx.window.embedding.SplitAttributes.Builder setSplitType(androidx.window.embedding.SplitAttributes.SplitType type);
   }
diff --git a/window/window/samples/src/main/java/androidx.window.samples.embedding/SplitAttributesCalculatorSamples.kt b/window/window/samples/src/main/java/androidx.window.samples.embedding/SplitAttributesCalculatorSamples.kt
index 9e69205..c6a3607 100644
--- a/window/window/samples/src/main/java/androidx.window.samples.embedding/SplitAttributesCalculatorSamples.kt
+++ b/window/window/samples/src/main/java/androidx.window.samples.embedding/SplitAttributesCalculatorSamples.kt
@@ -17,13 +17,12 @@
 package androidx.window.samples.embedding
 
 import android.app.Application
-import android.graphics.Color
 import androidx.annotation.Sampled
 import androidx.window.core.ExperimentalWindowApi
 import androidx.window.embedding.SplitAttributes
+import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_HINGE
-import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
 import androidx.window.embedding.SplitController
 import androidx.window.layout.FoldingFeature
 
@@ -61,8 +60,6 @@
                             SplitAttributes.LayoutDirection.LOCALE
                         }
                     )
-                    // Set the color to use when switching between vertical and horizontal
-                    .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GRAY))
                     .build()
             }
             return@setSplitAttributesCalculator if (
@@ -72,7 +69,6 @@
                 SplitAttributes.Builder()
                     .setSplitType(SPLIT_TYPE_EQUAL)
                     .setLayoutDirection(SplitAttributes.LayoutDirection.LOCALE)
-                    .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GRAY))
                     .build()
             } else {
                 // Expand containers if the device is in portrait or the width is less than 600 dp.
@@ -96,13 +92,11 @@
                 builder
                     .setLayoutDirection(SplitAttributes.LayoutDirection.LOCALE)
                     // Set the color to use when switching between vertical and horizontal
-                    .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GRAY))
                     .build()
             } else if (parentConfiguration.screenHeightDp >= 600) {
                 builder
                     .setLayoutDirection(SplitAttributes.LayoutDirection.TOP_TO_BOTTOM)
                     // Set the color to use when switching between vertical and horizontal
-                    .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GRAY))
                     .build()
             } else {
                 // Fallback to expand the secondary container
diff --git a/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingAdapterTest.kt b/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingAdapterTest.kt
index 631dfc3..c3afe8f 100644
--- a/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingAdapterTest.kt
+++ b/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingAdapterTest.kt
@@ -20,7 +20,6 @@
 import androidx.window.extensions.embedding.SplitAttributes as OEMSplitAttributes
 import androidx.window.extensions.embedding.SplitInfo as OEMSplitInfo
 import android.app.Activity
-import android.graphics.Color
 import androidx.window.WindowTestUtils
 import androidx.window.core.ExtensionsUtil
 import androidx.window.core.PredicateAdapter
@@ -61,7 +60,6 @@
             SplitAttributes.Builder()
                 .setSplitType(SplitType.SPLIT_TYPE_EQUAL)
                 .setLayoutDirection(SplitAttributes.LayoutDirection.LOCALE)
-                .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
                 .build()
         )
         assertEquals(listOf(expectedSplitInfo), adapter.translate(listOf(oemSplitInfo)))
@@ -124,7 +122,6 @@
             OEMSplitAttributes.Builder()
                 .setSplitType(OEMSplitAttributes.SplitType.HingeSplitType(RatioSplitType(0.5f)))
                 .setLayoutDirection(TOP_TO_BOTTOM)
-                .setAnimationBackgroundColor(Color.YELLOW)
                 .build(),
         )
         val expectedSplitInfo = SplitInfo(
@@ -133,7 +130,6 @@
             SplitAttributes.Builder()
                 .setSplitType(SPLIT_TYPE_HINGE)
                 .setLayoutDirection(SplitAttributes.LayoutDirection.TOP_TO_BOTTOM)
-                .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.YELLOW))
                 .build()
         )
         assertEquals(listOf(expectedSplitInfo), adapter.translate(listOf(oemSplitInfo)))
diff --git a/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingRuleConstructionTests.kt b/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingRuleConstructionTests.kt
index 582d047..e8fc72a 100644
--- a/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingRuleConstructionTests.kt
+++ b/window/window/src/androidTest/java/androidx/window/embedding/EmbeddingRuleConstructionTests.kt
@@ -19,7 +19,6 @@
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
-import android.graphics.Color
 import android.graphics.Rect
 import android.os.Build
 import androidx.annotation.RequiresApi
@@ -81,7 +80,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.5f))
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         assertNull(rule.tag)
         assertEquals(SPLIT_MIN_DIMENSION_DP_DEFAULT, rule.minWidthDp)
@@ -133,7 +131,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.3f))
             .setLayoutDirection(TOP_TO_BOTTOM)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.BLUE))
             .build()
         assertEquals(TEST_TAG, rule.tag)
         assertEquals(NEVER, rule.finishPrimaryWithSecondary)
@@ -154,7 +151,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.5f))
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         assertNull(rule.tag)
         assertEquals(SPLIT_MIN_DIMENSION_DP_DEFAULT, rule.minWidthDp)
@@ -180,7 +176,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.3f))
             .setLayoutDirection(LEFT_TO_RIGHT)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GREEN))
             .build()
         filters.add(
             SplitPairFilter(
@@ -382,7 +377,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.5f))
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         assertNull(rule.tag)
         assertEquals(SPLIT_MIN_DIMENSION_DP_DEFAULT, rule.minWidthDp)
@@ -437,8 +431,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.3f))
             .setLayoutDirection(BOTTOM_TO_TOP)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(
-                application.resources.getColor(R.color.testColor, null)))
             .build()
         assertEquals(TEST_TAG, rule.tag)
         assertEquals(ALWAYS, rule.finishPrimaryWithPlaceholder)
@@ -466,7 +458,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.5f))
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         assertEquals(expectedSplitLayout, rule.defaultSplitAttributes)
         assertTrue(rule.checkParentBounds(density, minValidWindowBounds()))
@@ -490,7 +481,6 @@
         val expectedSplitLayout = SplitAttributes.Builder()
             .setSplitType(SplitAttributes.SplitType.ratio(0.3f))
             .setLayoutDirection(LEFT_TO_RIGHT)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GREEN))
             .build()
         val rule = SplitPlaceholderRule.Builder(filters, intent)
             .setMinWidthDp(123)
diff --git a/window/window/src/main/java/androidx/window/embedding/EmbeddingAdapter.kt b/window/window/src/main/java/androidx/window/embedding/EmbeddingAdapter.kt
index 111a858..6dd98b7 100644
--- a/window/window/src/main/java/androidx/window/embedding/EmbeddingAdapter.kt
+++ b/window/window/src/main/java/androidx/window/embedding/EmbeddingAdapter.kt
@@ -100,7 +100,7 @@
                 when (val splitType = splitAttributes.splitType) {
                     is OEMSplitType.HingeSplitType -> SPLIT_TYPE_HINGE
                     is OEMSplitType.ExpandContainersSplitType -> SPLIT_TYPE_EXPAND
-                    is OEMSplitType.RatioSplitType -> ratio(splitType.ratio)
+                    is RatioSplitType -> ratio(splitType.ratio)
                     else -> throw IllegalArgumentException("Unknown split type: $splitType")
                 }
             ).setLayoutDirection(
@@ -115,9 +115,6 @@
                     )
                 }
             )
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.buildFromValue(
-                splitAttributes.animationBackgroundColor)
-            )
             .build()
 
     @OptIn(ExperimentalWindowApi::class)
@@ -214,7 +211,6 @@
                     )
                 }
             )
-            .setAnimationBackgroundColor(splitAttributes.animationBackgroundColor.value)
             .build()
     }
 
diff --git a/window/window/src/main/java/androidx/window/embedding/RuleParser.kt b/window/window/src/main/java/androidx/window/embedding/RuleParser.kt
index add2f25..e2cb653 100644
--- a/window/window/src/main/java/androidx/window/embedding/RuleParser.kt
+++ b/window/window/src/main/java/androidx/window/embedding/RuleParser.kt
@@ -174,20 +174,12 @@
                 ALWAYS.value
             )
             val clearTop = typedArray.getBoolean(R.styleable.SplitPairRule_clearTop, false)
-            val animationBackgroundColor = typedArray.getColor(
-                R.styleable.SplitPairRule_animationBackgroundColor,
-                SplitAttributes.BackgroundColor.DEFAULT.value
-            )
-            typedArray.recycle()
 
             val defaultAttrs = SplitAttributes.Builder()
                 .setSplitType(SplitAttributes.SplitType.buildSplitTypeFromValue(ratio))
                 .setLayoutDirection(
                     SplitAttributes.LayoutDirection.getLayoutDirectionFromValue(layoutDir)
                 )
-                .setAnimationBackgroundColor(
-                    SplitAttributes.BackgroundColor.buildFromValue(animationBackgroundColor)
-                )
                 .build()
 
             SplitPairRule.Builder(emptySet())
@@ -259,20 +251,12 @@
                 R.styleable.SplitPlaceholderRule_splitLayoutDirection,
                 LOCALE.value
             )
-            val animationBackgroundColor = typedArray.getColor(
-                R.styleable.SplitPlaceholderRule_animationBackgroundColor,
-                SplitAttributes.BackgroundColor.DEFAULT.value
-            )
-            typedArray.recycle()
 
             val defaultAttrs = SplitAttributes.Builder()
                 .setSplitType(SplitAttributes.SplitType.buildSplitTypeFromValue(ratio))
                 .setLayoutDirection(
                     SplitAttributes.LayoutDirection.getLayoutDirectionFromValue(layoutDir)
                 )
-                .setAnimationBackgroundColor(
-                    SplitAttributes.BackgroundColor.buildFromValue(animationBackgroundColor)
-                )
                 .build()
             val packageName = context.applicationContext.packageName
             val placeholderActivityClassName = buildClassName(
diff --git a/window/window/src/main/java/androidx/window/embedding/SplitAttributes.kt b/window/window/src/main/java/androidx/window/embedding/SplitAttributes.kt
index df42279..4991be0 100644
--- a/window/window/src/main/java/androidx/window/embedding/SplitAttributes.kt
+++ b/window/window/src/main/java/androidx/window/embedding/SplitAttributes.kt
@@ -17,15 +17,12 @@
 package androidx.window.embedding
 
 import android.annotation.SuppressLint
-import android.graphics.Color
-import androidx.annotation.ColorInt
 import androidx.annotation.FloatRange
 import androidx.annotation.IntRange
 import androidx.annotation.RestrictTo
 import androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP
 import androidx.window.core.SpecificationComputer.Companion.startSpecification
 import androidx.window.core.VerificationMode
-import androidx.window.embedding.SplitAttributes.BackgroundColor
 import androidx.window.embedding.SplitAttributes.LayoutDirection.Companion.LOCALE
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
 
@@ -59,7 +56,6 @@
  *
  * @see SplitAttributes.SplitType
  * @see SplitAttributes.LayoutDirection
- * @see SplitAttributes.BackgroundColor
  */
 class SplitAttributes @RestrictTo(LIBRARY_GROUP) constructor(
 
@@ -74,18 +70,6 @@
      * is based on locale.
      */
     val layoutDirection: LayoutDirection = LOCALE,
-
-    /**
-     * The color to use for the background color during the animation of
-     * the split involving this `SplitAttributes` object if the animation
-     * requires a background.
-     *
-     * The default is to use the current theme window background color.
-     *
-     * @see BackgroundColor.color
-     * @see BackgroundColor.DEFAULT
-     */
-    val animationBackgroundColor: BackgroundColor = BackgroundColor.DEFAULT
 ) {
 
     /**
@@ -364,85 +348,6 @@
     }
 
     /**
-     * Background color to be used for window transition animations in a split if the animation
-     * requires a background.
-     *
-     * @see SplitAttributes.animationBackgroundColor
-     */
-    class BackgroundColor private constructor(
-
-        /**
-         * The description of this `BackgroundColor`.
-         */
-        private val description: String,
-
-        /**
-         * [ColorInt] to represent the color to use as the background color.
-         */
-        @ColorInt
-        internal val value: Int,
-    ) {
-        override fun toString() = "BackgroundColor($description)"
-
-        override fun equals(other: Any?): Boolean {
-            if (other === this) return true
-            if (other !is BackgroundColor) return false
-            return value == other.value && description == other.description
-        }
-
-        override fun hashCode() = description.hashCode() + 31 * value.hashCode()
-
-        /**
-         * Methods that create various [BackgroundColor].
-         */
-        companion object {
-
-            /**
-             * Creates a [BackgroundColor] to represent the given [color].
-             *
-             * Only opaque color is supported.
-             *
-             * @param color [ColorInt] of an opaque color.
-             * @return the [BackgroundColor] representing the [color].
-             *
-             * @see [DEFAULT] for the default value, which means to use the
-             * current theme window background color.
-             */
-            @JvmStatic
-            fun color(
-                @IntRange(from = Color.BLACK.toLong(), to = Color.WHITE.toLong())
-                @ColorInt
-                color: Int
-            ):
-                BackgroundColor {
-                require(Color.BLACK <= color && color <= Color.WHITE) {
-                    "Background color must be opaque"
-                }
-                return BackgroundColor("color:${Integer.toHexString(color)}", color)
-            }
-
-            /**
-             * The special [BackgroundColor] to represent the default value,
-             * which means to use the current theme window background color.
-             */
-            @JvmField
-            val DEFAULT = BackgroundColor("DEFAULT", 0)
-
-            /**
-             * Returns a [BackgroundColor] with the given [value]
-             */
-            internal fun buildFromValue(@ColorInt value: Int): BackgroundColor {
-                return if (Color.alpha(value) != 255) {
-                    // Treat any non-opaque color as the default.
-                    DEFAULT
-                } else {
-                    color(value)
-                }
-            }
-        }
-    }
-
-    /**
      * Non-public properties and methods.
      */
     companion object {
@@ -457,7 +362,6 @@
     override fun hashCode(): Int {
         var result = splitType.hashCode()
         result = result * 31 + layoutDirection.hashCode()
-        result = result * 31 + animationBackgroundColor.hashCode()
         return result
     }
 
@@ -473,8 +377,7 @@
         if (this === other) return true
         if (other !is SplitAttributes) return false
         return splitType == other.splitType &&
-            layoutDirection == other.layoutDirection &&
-            animationBackgroundColor == other.animationBackgroundColor
+            layoutDirection == other.layoutDirection
     }
 
     /**
@@ -484,8 +387,7 @@
      */
     override fun toString(): String =
         "${SplitAttributes::class.java.simpleName}:" +
-            "{splitType=$splitType, layoutDir=$layoutDirection," +
-            " animationBackgroundColor=$animationBackgroundColor"
+            "{splitType=$splitType, layoutDir=$layoutDirection }"
 
     /**
      * Builder for creating an instance of [SplitAttributes].
@@ -499,7 +401,6 @@
     class Builder {
         private var splitType = SPLIT_TYPE_EQUAL
         private var layoutDirection = LOCALE
-        private var animationBackgroundColor = BackgroundColor.DEFAULT
 
         /**
          * Sets the split type attribute.
@@ -528,32 +429,11 @@
             apply { this.layoutDirection = layoutDirection }
 
         /**
-         * Sets the color to use for the background color during animation
-         * of the split involving this `SplitAttributes` object if the animation
-         * requires a background. Only opaque color is supported.
-         *
-         * The default is [BackgroundColor.DEFAULT], which means to use the
-         * current theme window background color.
-         *
-         * @param color The animation background color.
-         * @return This `Builder`.
-         *
-         * @see BackgroundColor.color
-         * @see BackgroundColor.DEFAULT
-         */
-        fun setAnimationBackgroundColor(color: BackgroundColor): Builder =
-            apply {
-                animationBackgroundColor = color
-            }
-
-        /**
          * Builds a `SplitAttributes` instance with the attributes specified by
-         * [setSplitType], [setLayoutDirection], and
-         * [setAnimationBackgroundColor].
+         * [setSplitType] and [setLayoutDirection].
          *
          * @return The new `SplitAttributes` instance.
          */
-        fun build(): SplitAttributes = SplitAttributes(splitType, layoutDirection,
-            animationBackgroundColor)
+        fun build(): SplitAttributes = SplitAttributes(splitType, layoutDirection)
     }
 }
\ No newline at end of file
diff --git a/window/window/src/test/java/androidx/window/embedding/SplitAttributesTest.kt b/window/window/src/test/java/androidx/window/embedding/SplitAttributesTest.kt
index a0ff9a73..7acee3d 100644
--- a/window/window/src/test/java/androidx/window/embedding/SplitAttributesTest.kt
+++ b/window/window/src/test/java/androidx/window/embedding/SplitAttributesTest.kt
@@ -16,7 +16,6 @@
 
 package androidx.window.embedding
 
-import android.graphics.Color
 import androidx.window.core.WindowStrictModeException
 import androidx.window.embedding.SplitAttributes.LayoutDirection.Companion.BOTTOM_TO_TOP
 import androidx.window.embedding.SplitAttributes.LayoutDirection.Companion.LEFT_TO_RIGHT
@@ -24,9 +23,9 @@
 import androidx.window.embedding.SplitAttributes.LayoutDirection.Companion.RIGHT_TO_LEFT
 import androidx.window.embedding.SplitAttributes.LayoutDirection.Companion.TOP_TO_BOTTOM
 import androidx.window.embedding.SplitAttributes.SplitType
+import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
 import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_HINGE
-import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EQUAL
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertNotEquals
 import org.junit.Assert.assertThrows
@@ -42,27 +41,14 @@
         val attrs1 = SplitAttributes.Builder()
             .setSplitType(SPLIT_TYPE_EQUAL)
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         val attrs2 = SplitAttributes.Builder()
             .setSplitType(SPLIT_TYPE_HINGE)
             .setLayoutDirection(LOCALE)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
             .build()
         val attrs3 = SplitAttributes.Builder()
             .setSplitType(SPLIT_TYPE_HINGE)
             .setLayoutDirection(TOP_TO_BOTTOM)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.DEFAULT)
-            .build()
-        val attrs4 = SplitAttributes.Builder()
-            .setSplitType(SPLIT_TYPE_HINGE)
-            .setLayoutDirection(TOP_TO_BOTTOM)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GREEN))
-            .build()
-        val attrs5 = SplitAttributes.Builder()
-            .setSplitType(SPLIT_TYPE_HINGE)
-            .setLayoutDirection(TOP_TO_BOTTOM)
-            .setAnimationBackgroundColor(SplitAttributes.BackgroundColor.color(Color.GREEN))
             .build()
 
         assertNotEquals(attrs1, attrs2)
@@ -73,12 +59,6 @@
 
         assertNotEquals(attrs3, attrs1)
         assertNotEquals(attrs3.hashCode(), attrs1.hashCode())
-
-        assertNotEquals(attrs3, attrs4)
-        assertNotEquals(attrs3.hashCode(), attrs4.hashCode())
-
-        assertEquals(attrs4, attrs5)
-        assertEquals(attrs4.hashCode(), attrs5.hashCode())
     }
 
     @Test