// Initialize the banner at the bottom of the screen. CGPoint origin = CGPointMake ( 0.0 , self . view . frame . size . height - CGSizeFromGADAdSize ( kGADAdSizeBanner ). height ); // Use predefined GADAdSize constants to define the GADBannerView. bannerView_ = [[ GADBannerView alloc ] initWithAdSize : kGADAdSizeBanner origin :origin] ; // Note: Provide a definition for ADMOB_ID // before compiling...