diff --git a/core/api/test-current.txt b/core/api/test-current.txt
index 167cd344a2c9a..328708f7091e7 100644
--- a/core/api/test-current.txt
+++ b/core/api/test-current.txt
@@ -168,11 +168,11 @@ package android.app {
   }
 
   public static interface ActivityOptions.OnAnimationFinishedListener {
-    method public void onAnimationFinished();
+    method public void onAnimationFinished(long);
   }
 
   public static interface ActivityOptions.OnAnimationStartedListener {
-    method public void onAnimationStarted();
+    method public void onAnimationStarted(long);
   }
 
   public class ActivityTaskManager {
diff --git a/core/java/android/app/ActivityOptions.java b/core/java/android/app/ActivityOptions.java
index 709272ce0e260..2eebc01ccc04c 100644
--- a/core/java/android/app/ActivityOptions.java
+++ b/core/java/android/app/ActivityOptions.java
@@ -46,6 +46,7 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
+import android.os.SystemClock;
 import android.os.UserHandle;
 import android.transition.TransitionManager;
 import android.util.Pair;
@@ -634,9 +635,10 @@ public class ActivityOptions extends ComponentOptions {
             mAnimationStartedListener = new IRemoteCallback.Stub() {
                 @Override
                 public void sendResult(Bundle data) throws RemoteException {
+                    final long elapsedRealtime = SystemClock.elapsedRealtime();
                     handler.post(new Runnable() {
                         @Override public void run() {
-                            listener.onAnimationStarted();
+                            listener.onAnimationStarted(elapsedRealtime);
                         }
                     });
                 }
@@ -645,13 +647,15 @@ public class ActivityOptions extends ComponentOptions {
     }
 
     /**
-     * Callback for use with {@link ActivityOptions#makeThumbnailScaleUpAnimation}
-     * to find out when the given animation has started running.
+     * Callback for finding out when the given animation has started running.
      * @hide
      */
     @TestApi
     public interface OnAnimationStartedListener {
-        void onAnimationStarted();
+        /**
+         * @param elapsedRealTime {@link SystemClock#elapsedRealTime} when animation started.
+         */
+        void onAnimationStarted(long elapsedRealTime);
     }
 
     private void setOnAnimationFinishedListener(final Handler handler,
@@ -660,10 +664,11 @@ public class ActivityOptions extends ComponentOptions {
             mAnimationFinishedListener = new IRemoteCallback.Stub() {
                 @Override
                 public void sendResult(Bundle data) throws RemoteException {
+                    final long elapsedRealtime = SystemClock.elapsedRealtime();
                     handler.post(new Runnable() {
                         @Override
                         public void run() {
-                            listener.onAnimationFinished();
+                            listener.onAnimationFinished(elapsedRealtime);
                         }
                     });
                 }
@@ -672,13 +677,15 @@ public class ActivityOptions extends ComponentOptions {
     }
 
     /**
-     * Callback for use with {@link ActivityOptions#makeThumbnailAspectScaleDownAnimation}
-     * to find out when the given animation has drawn its last frame.
+     * Callback for finding out when the given animation has drawn its last frame.
      * @hide
      */
     @TestApi
     public interface OnAnimationFinishedListener {
-        void onAnimationFinished();
+        /**
+         * @param elapsedRealTime {@link SystemClock#elapsedRealTime} when animation finished.
+         */
+        void onAnimationFinished(long elapsedRealTime);
     }
 
     /**
diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/view/RecentsTransition.java b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/view/RecentsTransition.java
index e253360a53641..b8319e51ec3b8 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/view/RecentsTransition.java
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/view/RecentsTransition.java
@@ -45,7 +45,7 @@ public class RecentsTransition {
             private boolean mHandled;
 
             @Override
-            public void onAnimationStarted() {
+            public void onAnimationStarted(long elapsedRealTime) {
                 // OnAnimationStartedListener can be called numerous times, so debounce here to
                 // prevent multiple callbacks
                 if (mHandled) {
diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/system/ActivityOptionsCompat.java b/packages/SystemUI/shared/src/com/android/systemui/shared/system/ActivityOptionsCompat.java
index e38d2bad11b3e..add2d022e893f 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/system/ActivityOptionsCompat.java
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/system/ActivityOptionsCompat.java
@@ -67,7 +67,7 @@ public abstract class ActivityOptionsCompat {
                 callbackHandler,
                 new ActivityOptions.OnAnimationStartedListener() {
                     @Override
-                    public void onAnimationStarted() {
+                    public void onAnimationStarted(long elapsedRealTime) {
                         if (callback != null) {
                             callbackHandler.post(callback);
                         }