diff --git a/core/java/android/view/InsetsAnimationControlCallbacks.java b/core/java/android/view/InsetsAnimationControlCallbacks.java
index 7696bbbb2d5a7..04bb6091672b3 100644
--- a/core/java/android/view/InsetsAnimationControlCallbacks.java
+++ b/core/java/android/view/InsetsAnimationControlCallbacks.java
@@ -35,7 +35,7 @@ public interface InsetsAnimationControlCallbacks {
      *     <li>Dispatch {@link WindowInsetsAnimationControlListener#onReady}</li>
      * </ul>
      */
-    <T extends InsetsAnimationControlRunner & WindowInsetsAnimationController>
+    <T extends InsetsAnimationControlRunner & InternalInsetsAnimationController>
     void startAnimation(T runner, WindowInsetsAnimationControlListener listener, int types,
             WindowInsetsAnimation animation, Bounds bounds);
 
diff --git a/core/java/android/view/InsetsAnimationControlImpl.java b/core/java/android/view/InsetsAnimationControlImpl.java
index b92d24f134aa4..7d8d653f5ab3b 100644
--- a/core/java/android/view/InsetsAnimationControlImpl.java
+++ b/core/java/android/view/InsetsAnimationControlImpl.java
@@ -69,7 +69,7 @@ import java.util.Objects;
  * @hide
  */
 @VisibleForTesting
-public class InsetsAnimationControlImpl implements WindowInsetsAnimationController,
+public class InsetsAnimationControlImpl implements InternalInsetsAnimationController,
         InsetsAnimationControlRunner {
 
     private static final String TAG = "InsetsAnimationCtrlImpl";
diff --git a/core/java/android/view/InsetsAnimationThreadControlRunner.java b/core/java/android/view/InsetsAnimationThreadControlRunner.java
index c11bde89d966b..fc97541bd34d4 100644
--- a/core/java/android/view/InsetsAnimationThreadControlRunner.java
+++ b/core/java/android/view/InsetsAnimationThreadControlRunner.java
@@ -54,7 +54,7 @@ public class InsetsAnimationThreadControlRunner implements InsetsAnimationContro
 
         @Override
         @UiThread
-        public <T extends InsetsAnimationControlRunner & WindowInsetsAnimationController>
+        public <T extends InsetsAnimationControlRunner & InternalInsetsAnimationController>
         void startAnimation(T runner, WindowInsetsAnimationControlListener listener, int types,
                 WindowInsetsAnimation animation, Bounds bounds) {
             // Animation will be started in constructor already.
diff --git a/core/java/android/view/InsetsController.java b/core/java/android/view/InsetsController.java
index 5c56baa57bd37..1dd5a1b57c539 100644
--- a/core/java/android/view/InsetsController.java
+++ b/core/java/android/view/InsetsController.java
@@ -632,7 +632,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
                         runningAnimations.add(runner.getAnimation());
                     }
 
-                    if (((WindowInsetsAnimationController) runner).applyChangeInsets(state)) {
+                    if (((InternalInsetsAnimationController) runner).applyChangeInsets(state)) {
                         finishedAnimations.add(runner.getAnimation());
                     }
                 }
@@ -1513,7 +1513,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
 
     @VisibleForTesting
     @Override
-    public <T extends InsetsAnimationControlRunner & WindowInsetsAnimationController>
+    public <T extends InsetsAnimationControlRunner & InternalInsetsAnimationController>
     void startAnimation(T runner, WindowInsetsAnimationControlListener listener, int types,
             WindowInsetsAnimation animation, Bounds bounds) {
         mHost.dispatchWindowInsetsAnimationPrepare(animation);
diff --git a/core/java/android/view/InsetsResizeAnimationRunner.java b/core/java/android/view/InsetsResizeAnimationRunner.java
index 83f51aa92d98e..e1352dd8dd4f7 100644
--- a/core/java/android/view/InsetsResizeAnimationRunner.java
+++ b/core/java/android/view/InsetsResizeAnimationRunner.java
@@ -43,7 +43,7 @@ import android.view.animation.Interpolator;
  * @hide
  */
 public class InsetsResizeAnimationRunner implements InsetsAnimationControlRunner,
-        WindowInsetsAnimationController, WindowInsetsAnimationControlListener {
+        InternalInsetsAnimationController, WindowInsetsAnimationControlListener {
 
     private final InsetsState mFromState;
     private final InsetsState mToState;
diff --git a/core/java/android/view/InternalInsetsAnimationController.java b/core/java/android/view/InternalInsetsAnimationController.java
new file mode 100644
index 0000000000000..d7f3e20b80c54
--- /dev/null
+++ b/core/java/android/view/InternalInsetsAnimationController.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 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 android.view;
+
+/**
+ * An internal interface which provides methods that will be only used by the framework.
+ * @hide
+ */
+public interface InternalInsetsAnimationController extends WindowInsetsAnimationController {
+
+    /**
+     * Flags whether {@link WindowInsetsAnimationControlListener#onReady(
+     * WindowInsetsAnimationController, int)} has been invoked.
+     * @hide
+     */
+    void setReadyDispatched(boolean dispatched);
+
+    /**
+     * Returns the {@link InsetsState} based on the current animation progress.
+     *
+     * @param outState the insets state which matches the current animation progress.
+     * @return {@code true} if the animation has been finished; {@code false} otherwise.
+     * @hide
+     */
+    boolean applyChangeInsets(InsetsState outState);
+}
+
diff --git a/core/java/android/view/WindowInsetsAnimationController.java b/core/java/android/view/WindowInsetsAnimationController.java
index bdfeb748fb992..6578e9b6c20ca 100644
--- a/core/java/android/view/WindowInsetsAnimationController.java
+++ b/core/java/android/view/WindowInsetsAnimationController.java
@@ -188,20 +188,4 @@ public interface WindowInsetsAnimationController {
      *  fullscreen or non-overlapping).
      */
     boolean hasZeroInsetsIme();
-
-    /**
-     * Flags whether {@link WindowInsetsAnimationControlListener#onReady(
-     * WindowInsetsAnimationController, int)} has been invoked.
-     * @hide
-     */
-    void setReadyDispatched(boolean dispatched);
-
-    /**
-     * Returns the {@link InsetsState} based on the current animation progress.
-     *
-     * @param outState the insets state which matches the current animation progress.
-     * @return {@code true} if the animation has been finished; {@code false} otherwise.
-     * @hide
-     */
-    boolean applyChangeInsets(InsetsState outState);
 }
diff --git a/services/core/java/com/android/server/wm/InsetsPolicy.java b/services/core/java/com/android/server/wm/InsetsPolicy.java
index 450c2c14bb1c8..cf783398fc8de 100644
--- a/services/core/java/com/android/server/wm/InsetsPolicy.java
+++ b/services/core/java/com/android/server/wm/InsetsPolicy.java
@@ -43,6 +43,7 @@ import android.view.InsetsSource;
 import android.view.InsetsSourceControl;
 import android.view.InsetsState;
 import android.view.InsetsState.InternalInsetsType;
+import android.view.InternalInsetsAnimationController;
 import android.view.SurfaceControl;
 import android.view.SyncRtSurfaceTransactionApplier;
 import android.view.WindowInsetsAnimation;
@@ -585,7 +586,7 @@ class InsetsPolicy {
             }
 
             @Override
-            public <T extends InsetsAnimationControlRunner & WindowInsetsAnimationController>
+            public <T extends InsetsAnimationControlRunner & InternalInsetsAnimationController>
             void startAnimation(T runner, WindowInsetsAnimationControlListener listener, int types,
                     WindowInsetsAnimation animation,
                     Bounds bounds) {