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.

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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.

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admobviewcontroller.view.hidden = YES

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[admobviewcontroller removeFromSuperview];