Ensure that we update the preview layout rule when not animating.

Bug: 28166173
Change-Id: Ibf0245f2dd667216ccabb23a1b279b1801d60cac

src/com/android/launcher3/Workspace.java

@@ -2584,6 +2584,7 @@ public class Workspace extends PagedView
                 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale,
                         postAnimationRunnable);
             } else {
+                fi.prepareCreate(v);
                 fi.addItem(destInfo);
                 fi.addItem(sourceInfo);
             }

src/com/android/launcher3/folder/FolderIcon.java

@@ -262,14 +262,19 @@ public class FolderIcon extends FrameLayout implements FolderListener {
         }
     };
 
+    public Drawable prepareCreate(final View destView) {
+        Drawable animateDrawable = getTopDrawable((TextView) destView);
+        computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(),
+                destView.getMeasuredWidth());
+        return animateDrawable;
+    }
+
     public void performCreateAnimation(final ShortcutInfo destInfo, final View destView,
             final ShortcutInfo srcInfo, final DragView srcView, Rect dstRect,
             float scaleRelativeToDragLayer, Runnable postAnimationRunnable) {
 
         // These correspond two the drawable and view that the icon was dropped _onto_
-        Drawable animateDrawable = getTopDrawable((TextView) destView);
-        computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(),
-                destView.getMeasuredWidth());
+        Drawable animateDrawable = prepareCreate(destView);
 
         mReferenceDrawable = animateDrawable;
 

src/com/android/launcher3/folder/FolderPagedView.java

@@ -197,7 +197,7 @@ public class FolderPagedView extends PagedView {
      */
     public int allocateRankForNewItem(ShortcutInfo info) {
         int rank = getItemCount();
-        ArrayList<View> views = new ArrayList<View>(mFolder.getItemsInReadingOrder());
+        ArrayList<View> views = new ArrayList<>(mFolder.getItemsInReadingOrder());
         views.add(rank, null);
         arrangeChildren(views, views.size(), false);
         setCurrentPage(rank / mMaxItemsPerPage);