how to show/hide added subview on next navigation page in iphone app?

I am adding google admob banner as subview to appdelegate.now on certain page i don't want that banner,

I am able to remove that using me开发者_JS百科thod defined in appdelegate but when I come back to previous page that banner remains hide.

If u have the reference of the AppDelegate class in the voiceviewcontroller.m, declare and define a method in AppDelegate to remove the admob view and then, call that method from voiceviewcontroller.

admobviewcontroller.view.hidden = YES

[admobviewcontroller removeFromSuperview];