Add new callback for when activity rotates

Launcher needs to distinguish display changes
that result naturally vs apps that launch
in a fixed portrait/landscape rotation during
the quickstep gesture.This callback helps anticipate
if a subseqent onDisplayChanged() will
have resulted from a natural rotation or not.

Bug: 154580671
Change-Id: I59ee7985a9f367e8fc5826c08476c1a25d1426b0

2 files changed, 14 insertions, 0 deletions

diff --git a/core/java/android/app/ITaskStackListener.aidl b/core/java/android/app/ITaskStackListener.aidl
index 2d06ee8d06bc..b68639eb9ac6 100644
--- a/core/java/android/app/ITaskStackListener.aidl
+++ b/core/java/android/app/ITaskStackListener.aidl
@@ -216,4 +216,14 @@ oneway interface ITaskStackListener {
      *                             in {@link android.content.pm.ActivityInfo}.
      */
      void onTaskRequestedOrientationChanged(int taskId, int requestedOrientation);
+
+    /**
+     * Called when a rotation is about to start on the foreground activity.
+     * This applies for:
+     *   * free sensor rotation
+     *   * forced rotation
+     *   * rotation settings set through adb command line
+     *   * rotation that occurs when rotation tile is toggled in quick settings
+     */
+     void onActivityRotation();
 }
diff --git a/core/java/android/app/TaskStackListener.java b/core/java/android/app/TaskStackListener.java
index 5d8daf88a8de..843d1c7414f8 100644
--- a/core/java/android/app/TaskStackListener.java
+++ b/core/java/android/app/TaskStackListener.java
@@ -199,4 +199,8 @@ public abstract class TaskStackListener extends ITaskStackListener.Stub {
     @Override
     public void onTaskRequestedOrientationChanged(int taskId, int requestedOrientation) {
     }
+
+    @Override
+    public void onActivityRotation() {
+    }
 }