IOS drop down with UITextField and UITableView

IOS drop down with UITextField and UITableView

I have created a drop down using UITextField and UITableView. When the
user selects a textfield then a tableview is displayed as a drop down. I
had set the tableview delegate and datasource in another class.
Now my issue is i wanted to get the text of the selected row in tableview
on to the textfield i.e I want to send the tableview row text back to view
controller(which consists of textfield) when user selects a row in
tableview.
Thanks in advance.