Keep promo state on rotate

Promo was being collapsed because rotate causes list to be scrolled at IDLE state. Make the drag more explicit by including the fastScroller drag state instead

manually verified fast scrolling still minimizes promo and rotating while promo is expanded keeps it expanded
Bug: 67670326
Test: ContactsPromoFragmentTest
PiperOrigin-RevId: 172352966
Change-Id: Iab5438501db1d54b7ffac3339faecde0256a3632

2 files changed, 10 insertions, 3 deletions

diff --git a/java/com/android/dialer/contactsfragment/ContactsFragment.java b/java/com/android/dialer/contactsfragment/ContactsFragment.java
index 759897f91..a8daa546a 100644
--- a/java/com/android/dialer/contactsfragment/ContactsFragment.java
+++ b/java/com/android/dialer/contactsfragment/ContactsFragment.java
@@ -93,7 +93,7 @@ public class ContactsFragment extends Fragment
 
   /** Listener for contacts list scroll state. */
   public interface OnContactsListScrolledListener {
-    void onContactsListScrolled(int scrollState);
+    void onContactsListScrolled(boolean isDragging);
   }
 
   /**
@@ -248,7 +248,9 @@ public class ContactsFragment extends Fragment
     String anchoredHeaderString = adapter.getHeaderString(firstCompletelyVisible);
 
     FragmentUtils.getParentUnsafe(this, OnContactsListScrolledListener.class)
-        .onContactsListScrolled(recyclerView.getScrollState());
+        .onContactsListScrolled(
+            recyclerView.getScrollState() == RecyclerView.SCROLL_STATE_DRAGGING
+                || fastScroller.isDragStarted());
 
     // If the user swipes to the top of the list very quickly, there is some strange behavior
     // between this method updating headers and adapter#onBindViewHolder updating headers.
diff --git a/java/com/android/dialer/contactsfragment/FastScroller.java b/java/com/android/dialer/contactsfragment/FastScroller.java
index 2a86a3bb6..2bd07ac5d 100644
--- a/java/com/android/dialer/contactsfragment/FastScroller.java
+++ b/java/com/android/dialer/contactsfragment/FastScroller.java
@@ -81,8 +81,13 @@ public class FastScroller extends RelativeLayout {
         container.setVisibility(INVISIBLE);
         scrollBar.setSelected(false);
         return true;
+      default:
+        return super.onTouchEvent(event);
     }
-    return super.onTouchEvent(event);
+  }
+
+  public boolean isDragStarted() {
+    return dragStarted;
   }
 
   private void setRecyclerViewPosition(float y) {