diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 796fa80..cd9e598 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -24,7 +24,9 @@
 import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent;
 
 import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
 import android.content.Context;
+import android.os.Build;
 import android.util.AttributeSet;
 import android.util.Pair;
 import android.view.MotionEvent;
@@ -32,6 +34,7 @@
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.animation.Interpolator;
 import android.widget.LinearLayout;
+import android.window.OnBackAnimationCallback;
 
 import androidx.annotation.IntDef;
 
@@ -46,8 +49,9 @@
 /**
  * Base class for a View which shows a floating UI on top of the launcher UI.
  */
+@TargetApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
 public abstract class AbstractFloatingView extends LinearLayout implements TouchController,
-        OnBackPressedHandler {
+        OnBackAnimationCallback {
 
     @IntDef(flag = true, value = {
             TYPE_FOLDER,
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 22b07ef..80895f4 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -116,9 +116,10 @@
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.OvershootInterpolator;
 import android.widget.Toast;
+import android.window.BackEvent;
+import android.window.OnBackAnimationCallback;
 
 import androidx.annotation.CallSuper;
-import androidx.annotation.FloatRange;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
@@ -560,7 +561,7 @@
     }
 
     /**
-     * Provide {@link OnBackPressedHandler} in below order:
+     * Provide {@link OnBackAnimationCallback} in below order:
      * <ol>
      *  <li> auto cancel action mode handler
      *  <li> drag handler
@@ -575,7 +576,8 @@
      * Note that state handler will always be handling the back press event if the previous 3 don't.
      */
     @NonNull
-    protected OnBackPressedHandler getOnBackPressedHandler() {
+    @TargetApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    protected OnBackAnimationCallback getOnBackAnimationCallback() {
         // #1 auto cancel action mode handler
         if (isInAutoCancelActionMode()) {
             return this::finishAutoCancelActionMode;
@@ -594,17 +596,16 @@
         }
 
         // #4 state handler
-        return new OnBackPressedHandler() {
+        return new OnBackAnimationCallback() {
             @Override
             public void onBackInvoked() {
                 onStateBack();
             }
 
             @Override
-            public void onBackProgressed(
-                    @FloatRange(from = 0.0, to = 1.0) float backProgress) {
+            public void onBackProgressed(@NonNull BackEvent backEvent) {
                 mStateManager.getState().onBackProgressed(
-                        Launcher.this, backProgress);
+                        Launcher.this, backEvent.getProgress());
             }
 
             @Override
@@ -2117,8 +2118,9 @@
     }
 
     @Override
+    @TargetApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     public void onBackPressed() {
-        getOnBackPressedHandler().onBackInvoked();
+        getOnBackAnimationCallback().onBackInvoked();
     }
 
     protected void onStateBack() {
diff --git a/src/com/android/launcher3/OnBackPressedHandler.java b/src/com/android/launcher3/OnBackPressedHandler.java
deleted file mode 100644
index 485aa0a..0000000
--- a/src/com/android/launcher3/OnBackPressedHandler.java
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2023 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;
-
-import androidx.annotation.FloatRange;
-
-/**
- * Interface that mimics {@link android.window.OnBackInvokedCallback} without dependencies on U's
- * API such as {@link android.window.BackEvent}.
- *
- * <p> Impl can assume below order during a back gesture:
- * <ol>
- *  <li> [optional] one {@link #onBackStarted()} will be called to start the gesture
- *  <li> zero or multiple {@link #onBackProgressed(float)} will be called during swipe gesture
- *  <li> either one of {@link #onBackInvoked()} or {@link #onBackCancelled()} will be called to end
- *  the gesture
- */
-public interface OnBackPressedHandler {
-
-    /** Called when back has started. */
-    default void onBackStarted() {}
-
-    /** Called when back is committed. */
-    void onBackInvoked();
-
-    /** Called with back gesture's progress. */
-    default void onBackProgressed(@FloatRange(from = 0.0, to = 1.0) float backProgress) {}
-
-    /** Called when user drops the back gesture. */
-    default void onBackCancelled() {}
-}
diff --git a/src/com/android/launcher3/views/AbstractSlideInView.java b/src/com/android/launcher3/views/AbstractSlideInView.java
index 8a9b179..5730582 100644
--- a/src/com/android/launcher3/views/AbstractSlideInView.java
+++ b/src/com/android/launcher3/views/AbstractSlideInView.java
@@ -28,10 +28,12 @@
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
+import android.annotation.TargetApi;
 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Outline;
 import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.util.AttributeSet;
 import android.util.Property;
 import android.view.MotionEvent;
@@ -39,8 +41,8 @@
 import android.view.ViewGroup;
 import android.view.ViewOutlineProvider;
 import android.view.animation.Interpolator;
+import android.window.BackEvent;
 
-import androidx.annotation.FloatRange;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.Px;
@@ -193,8 +195,9 @@
     }
 
     @Override
-    public void onBackProgressed(@FloatRange(from = 0.0, to = 1.0) float progress) {
-        super.onBackProgressed(progress);
+    @TargetApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    public void onBackProgressed(BackEvent backEvent) {
+        final float progress = backEvent.getProgress();
         float deceleratedProgress =
                 Interpolators.PREDICTIVE_BACK_DECELERATED_EASE.getInterpolation(progress);
         mIsBackProgressing = progress > 0f;
diff --git a/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java b/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
index 0403249..0b2f5a5 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
@@ -25,11 +25,13 @@
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.PropertyValuesHolder;
+import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.pm.LauncherApps;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Rect;
+import android.os.Build;
 import android.os.Process;
 import android.os.UserHandle;
 import android.os.UserManager;
@@ -47,8 +49,8 @@
 import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.TextView;
+import android.window.BackEvent;
 
-import androidx.annotation.FloatRange;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.Px;
@@ -360,9 +362,10 @@
     }
 
     @Override
-    public void onBackProgressed(@FloatRange(from = 0.0, to = 1.0) float progress) {
-        super.onBackProgressed(progress);
-        mFastScroller.setVisibility(progress > 0 ? View.INVISIBLE : View.VISIBLE);
+    @TargetApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    public void onBackProgressed(@NonNull BackEvent backEvent) {
+        super.onBackProgressed(backEvent);
+        mFastScroller.setVisibility(backEvent.getProgress() > 0 ? View.INVISIBLE : View.VISIBLE);
     }
 
     private void attachScrollbarToRecyclerView(WidgetsRecyclerView recyclerView) {