diff --git a/core/api/current.txt b/core/api/current.txt
index 7d45ad87c9692..08639002e3810 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -3074,6 +3074,7 @@ package android.accessibilityservice {
     method public void onSystemActionsChanged();
     method public final boolean performGlobalAction(int);
     method public void setAccessibilityFocusAppearance(int, @ColorInt int);
+    method public void setAnimationScale(float);
     method public boolean setCacheEnabled(boolean);
     method public void setGestureDetectionPassthroughRegion(int, @NonNull android.graphics.Region);
     method public final void setServiceInfo(android.accessibilityservice.AccessibilityServiceInfo);
@@ -6949,6 +6950,7 @@ package android.app {
     method public boolean performGlobalAction(int);
     method public void revokeRuntimePermission(String, String);
     method public void revokeRuntimePermissionAsUser(String, String, android.os.UserHandle);
+    method public void setAnimationScale(float);
     method public void setOnAccessibilityEventListener(android.app.UiAutomation.OnAccessibilityEventListener);
     method public boolean setRotation(int);
     method public void setRunAsMonkey(boolean);
diff --git a/core/java/android/accessibilityservice/AccessibilityService.java b/core/java/android/accessibilityservice/AccessibilityService.java
index 42d2d28ae9286..50473f1d8c845 100644
--- a/core/java/android/accessibilityservice/AccessibilityService.java
+++ b/core/java/android/accessibilityservice/AccessibilityService.java
@@ -3120,6 +3120,33 @@ public abstract class AccessibilityService extends Service {
         }
     }
 
+    /**
+     * Sets the system settings values that control the scaling factor for animations. The scale
+     * controls the animation playback speed for animations that respect these settings. Animations
+     * that do not respect the settings values will not be affected by this function. A lower scale
+     * value results in a faster speed. A value of <code>0</code> disables animations entirely. When
+     * animations are disabled services receive window change events more quickly which can reduce
+     * the potential by confusion by reducing the time during which windows are in transition.
+     *
+     * @see AccessibilityEvent#TYPE_WINDOWS_CHANGED
+     * @see AccessibilityEvent#TYPE_WINDOW_STATE_CHANGED
+     * @see android.provider.Settings.Global#WINDOW_ANIMATION_SCALE
+     * @see android.provider.Settings.Global#TRANSITION_ANIMATION_SCALE
+     * @see android.provider.Settings.Global#ANIMATOR_DURATION_SCALE
+     * @param scale The scaling factor for all animations.
+     */
+    public void setAnimationScale(float scale) {
+        final IAccessibilityServiceConnection connection =
+                AccessibilityInteractionClient.getInstance(this).getConnection(mConnectionId);
+        if (connection != null) {
+            try {
+                connection.setAnimationScale(scale);
+            } catch (RemoteException re) {
+                throw new RuntimeException(re);
+            }
+        }
+    }
+
     private static class AccessibilityContext extends ContextWrapper {
         private final int mConnectionId;
 
diff --git a/core/java/android/accessibilityservice/IAccessibilityServiceConnection.aidl b/core/java/android/accessibilityservice/IAccessibilityServiceConnection.aidl
index 2cc15b40106be..0d6b19941afed 100644
--- a/core/java/android/accessibilityservice/IAccessibilityServiceConnection.aidl
+++ b/core/java/android/accessibilityservice/IAccessibilityServiceConnection.aidl
@@ -144,4 +144,6 @@ interface IAccessibilityServiceConnection {
     void onDoubleTap(int displayId);
 
     void onDoubleTapAndHold(int displayId);
+
+    void setAnimationScale(float scale);
 }
diff --git a/core/java/android/app/UiAutomation.java b/core/java/android/app/UiAutomation.java
index 00903a8808340..b41b5f005f1f3 100644
--- a/core/java/android/app/UiAutomation.java
+++ b/core/java/android/app/UiAutomation.java
@@ -779,6 +779,33 @@ public final class UiAutomation {
         return false;
     }
 
+    /**
+     * Sets the system settings values that control the scaling factor for animations. The scale
+     * controls the animation playback speed for animations that respect these settings. Animations
+     * that do not respect the settings values will not be affected by this function. A lower scale
+     * value results in a faster speed. A value of <code>0</code> disables animations entirely. When
+     * animations are disabled services receive window change events more quickly which can reduce
+     * the potential by confusion by reducing the time during which windows are in transition.
+     *
+     * @see AccessibilityEvent#TYPE_WINDOWS_CHANGED
+     * @see AccessibilityEvent#TYPE_WINDOW_STATE_CHANGED
+     * @see android.provider.Settings.Global#WINDOW_ANIMATION_SCALE
+     * @see android.provider.Settings.Global#TRANSITION_ANIMATION_SCALE
+     * @see android.provider.Settings.Global#ANIMATOR_DURATION_SCALE
+     * @param scale The scaling factor for all animations.
+     */
+    public void setAnimationScale(float scale) {
+        final IAccessibilityServiceConnection connection =
+                AccessibilityInteractionClient.getInstance().getConnection(mConnectionId);
+        if (connection != null) {
+            try {
+                connection.setAnimationScale(scale);
+            } catch (RemoteException re) {
+                throw new RuntimeException(re);
+            }
+        }
+    }
+
     /**
      * A request for WindowManagerService to wait until all animations have completed and input
      * information has been sent from WindowManager to native InputManager.
diff --git a/core/tests/coretests/src/android/view/accessibility/AccessibilityServiceConnectionImpl.java b/core/tests/coretests/src/android/view/accessibility/AccessibilityServiceConnectionImpl.java
index 02e5942a3544f..fc385a013d007 100644
--- a/core/tests/coretests/src/android/view/accessibility/AccessibilityServiceConnectionImpl.java
+++ b/core/tests/coretests/src/android/view/accessibility/AccessibilityServiceConnectionImpl.java
@@ -204,4 +204,6 @@ public class AccessibilityServiceConnectionImpl extends IAccessibilityServiceCon
 
     public void logTrace(long timestamp, String where, long loggingTypes, String callingParams,
             int processId, long threadId, int callingUid, Bundle serializedCallingStackInBundle) {}
+
+    public void setAnimationScale(float scale) {}
 }
diff --git a/services/accessibility/java/com/android/server/accessibility/AbstractAccessibilityServiceConnection.java b/services/accessibility/java/com/android/server/accessibility/AbstractAccessibilityServiceConnection.java
index e93ac47b19402..8b62a64f57d4c 100644
--- a/services/accessibility/java/com/android/server/accessibility/AbstractAccessibilityServiceConnection.java
+++ b/services/accessibility/java/com/android/server/accessibility/AbstractAccessibilityServiceConnection.java
@@ -66,6 +66,7 @@ import android.os.RemoteCallback;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.SystemClock;
+import android.provider.Settings;
 import android.util.Slog;
 import android.util.SparseArray;
 import android.view.Display;
@@ -269,6 +270,7 @@ abstract class AbstractAccessibilityServiceConnection extends IAccessibilityServ
         void onDoubleTap(int displayId);
 
         void onDoubleTapAndHold(int displayId);
+
     }
 
     public AbstractAccessibilityServiceConnection(Context context, ComponentName componentName,
@@ -2164,4 +2166,23 @@ abstract class AbstractAccessibilityServiceConnection extends IAccessibilityServ
     public void onDoubleTapAndHold(int displayId) {
         mSystemSupport.onDoubleTapAndHold(displayId);
     }
-}
+
+    /**
+     * Sets the scaling factor for animations.
+     */
+    public void setAnimationScale(float scale) {
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            Settings.Global.putFloat(
+                    mContext.getContentResolver(), Settings.Global.WINDOW_ANIMATION_SCALE, scale);
+            Settings.Global.putFloat(
+                    mContext.getContentResolver(),
+                    Settings.Global.TRANSITION_ANIMATION_SCALE,
+                    scale);
+            Settings.Global.putFloat(
+                    mContext.getContentResolver(), Settings.Global.ANIMATOR_DURATION_SCALE, scale);
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+}
\ No newline at end of file