diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 4f14d8c2d06f9a2cfc8792deae671d2d485c0eb3..db3f2aa718326332683903762ca9c7af496b9556 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -5594,7 +5594,15 @@ public class Activity extends ContextThemeWrapper
      *         back) true is returned, else false.
      */
     public boolean moveTaskToBack(boolean nonRoot) {
-        this.onBackPressed();
+        if (mActionBar != null && mActionBar.collapseActionView()) {
+            return false;
+        }
+
+        if (!mFragments.getFragmentManager().popBackStackImmediate()) {
+            if (!mActivityTransitionState.startExitBackTransition(this)) {
+                finish(FINISH_TASK_WITH_ROOT_ACTIVITY);
+            }
+        }
         return true;
     }