iAd displayment
In one of my apps, I have an AdBannerView. Then in the Settings app (and on another view controller) I have an on/off switch that I want to charge someone an in-app purchase to remove/hide permanently (for 1 year from purchase) the AdBannerView. How would I do both of those? (I can't find a tutorial on Apple's dev website. If you do not understand what I mean, TextFree (see screenshot attached) has a similar feature except they don't use iAds.
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