1 files changed, 7 insertions, 0 deletions
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 172cd03900e7..17e3914ab24b 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -147,6 +147,7 @@ import android.os.SystemProperties;
 import android.os.Trace;
 import android.os.UserHandle;
 import android.sysprop.DisplayProperties;
+import android.text.TextUtils;
 import android.util.AndroidRuntimeException;
 import android.util.DisplayMetrics;
 import android.util.EventLog;
@@ -10885,6 +10886,12 @@ public final class ViewRootImpl implements ViewParent,
      * {@link OnBackInvokedCallback} to be called to the server.
      */
     private void registerBackCallbackOnWindow() {
+        if (OnBackInvokedDispatcher.DEBUG) {
+            Log.d(OnBackInvokedDispatcher.TAG, TextUtils.formatSimple(
+                    "ViewRootImpl.registerBackCallbackOnWindow. Callback:%s Package:%s "
+                            + "IWindow:%s Session:%s",
+                    mOnBackInvokedDispatcher, mBasePackageName, mWindow, mWindowSession));
+        }
         mOnBackInvokedDispatcher.attachToWindow(mWindowSession, mWindow);
     }