如何通过目标C中的动画增加单元格高度

I have UITableviewcell which i want to make it big by tapping on it . I am able to make it big if i tap and get back to normal height when i tap it once again , but the transition isnt good . Is there a way when i tap on cell the transition is smooth and the cell height becomes big .I have UITableviewcell which i want to make it