how to hide empty rows in a UITableView and change the height of the Uitableview based on non-empty rows

Question

I have couple of problems with my UITableView.

1. When I add a UITableview on my page, by default it brings up some fixed number of rows,

Answer 1

You sure you are using UITableViewStyleGrouped style?

Because by default it is set to UITableViewStylePlain which shows empty cells too after displaying filled cells.