Does it support auto-compute cell height when it exists in tableview cell?

[ivanyang1984]

If i have uitableview cell which contains a view that has many items using flex layout. how can I get the cell height before the item was being drawn on its container view ? i knew about when the layout finished and it drew the items, then i get its height. but i still needs the height before drawing begins. because the method: heightforrowatindexpath