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    <p><em><strong>Minimum deployment target</em></strong><br> The first question is: <strong>what is a sensible minimum deployment target?</strong> Seeing as this is a universal application, we should use iOS 4.2, as this is the first version that is unified between iPhone and iPad.</p> <p>Question arises: what fraction of ad-clicking customers do we lose? eg is it worth supporting 4.0 just to get an extra 15% of customers?</p> <p><a href="http://insights.chitika.com/2011/ios-update-ipads-iphones-running-high-rate-of-ios-4/" rel="nofollow">http://insights.chitika.com/2011/ios-update-ipads-iphones-running-high-rate-of-ios-4/</a> shows that you still pick up 80% of ad-clicking customers if you select 4.2. </p> <p>Obviously this fraction is going to increase with time, so I'm going for the easiest coding option rather than trying to squeeze every last penny out of the market.</p> <p>This has an added benefit:</p> <pre><code>// Supported sizes of banner ads available from ad server. Dimensions are in points, not pixels. // The dimensions are part of the value names to assist with design-time planning for view layout. extern NSString * const ADBannerContentSizeIdentifier320x50 __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_NA,__MAC_NA,__IPHONE_4_0,__IPHONE_4_2); extern NSString * const ADBannerContentSizeIdentifier480x32 __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_NA,__MAC_NA,__IPHONE_4_0,__IPHONE_4_2); extern NSString * const ADBannerContentSizeIdentifierPortrait __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_2); extern NSString * const ADBannerContentSizeIdentifierLandscape __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_2); </code></pre> <p>ie We can use the new symbols, which are generic (ie work for both iPhone and iPad)</p> <pre><code>strPortrait = ADBannerContentSizeIdentifierPortrait; // ADBannerContentSizeIdentifier320x50; strLandscape = ADBannerContentSizeIdentifierLandscape; // ADBannerContentSizeIdentifier480x32; </code></pre> <p><em><strong>The banner can be either horizontal or vertical</em></strong>, so you need to load in:</p> <pre><code>[self.adBannerView setRequiredContentSizeIdentifiers: [NSSet setWithObjects: strPortrait, strLandscape, nil] ]; </code></pre> <p>Then when the screen turns 90°, the AdBannerView needs to be told:</p> <pre><code>[self.adBannerView setCurrentContentSizeIdentifier: isLandscape ? strLandscape : strPortrait ]; </code></pre> <p>Directly after this is set, you can query <strong>self.adBannerView.frame</strong> and get the new size</p>
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    1. POiOS: Universal App Template supporting iAds & screen rotations
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    1. CONOTE: although this doesn't answer the question, it is related to the topic, so probably it will be useful to someone
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