Merge "Fix issue where the solution is not updated when the grid is empty" into tm-qpr-dev

src/com/android/launcher3/Workspace.java

@@ -2385,6 +2385,9 @@ public class Workspace<T extends View & PageIndicator> extends PagedView<T>
         ItemInfo item = d.dragInfo;
         final View child = (mDragInfo == null) ? null : mDragInfo.cell;
         if (!nearestDropOccupied) {
+            mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
+                    (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY,
+                    child, mTargetCell, new int[2], CellLayout.MODE_SHOW_REORDER_HINT);
             mDragTargetLayout.visualizeDropLocation(mTargetCell[0], mTargetCell[1],
                     item.spanX, item.spanY, d);
         } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER)