ios - Refresh Container View on Button Press -

i have uiviewcontroller container view holds uitableview.

within uitableview have nsfetchcontroller nspredicate uses variables intial uiviewcontroller (i hope still me). 1 instance user changes container view not update.

how can force reload/update on container view when occurs? looked around did not see on topic.

to specific have uidatepicker changes date on button. needs updated.

from initial uiview controller, can reference table view controller self.childviewcontrollers[0]. so, need this:

uitableviewcontroller *tbc = (uitableviewcontroller *)self.childviewcontrollers[0]; [tbc.tableview reloaddata];