Code Snippets for iOS Device Orientation
<div id="cnblogs_post_body">从iOS Code Snippets看来的技术，挺方便的，转载记录于此。在XCode4中，项目属性设置中很容易就可以配置iOS项目支持设备持有方向，如图： http://images.cnblogs.com/cnblogs_com/wupher/201208/201208272225249957.png
可惜，这个设置仅仅是在plist中存储了相关设置，真正要控制某个UIView的设备翻转支持，你还得在相关的UIViewController中折腾-shouldAutorotateToInterfaceOrientation:函数，根据不同的设备持有方向，来返回YES或NO。
这个code snippet简化了相关操作，通过它你可以直接在shouldAutorotateToInterfaceOrientation:函数中查询plist的相关设置，根据设置来进行返回，而不用手工代码来进行一一判断。
<div class="cnblogs_code">static inline NSString * NSStringFromUIInterfaceOriention(UIInterfaceOrientation orientation){ switch (orientation) { case UIInterfaceOrientationPortrait: return @"UIInterfaceOrientationPortrait"; case UIInterfaceOrientationPortraitUpsideDown: return@"UIInterfaceOrientationPortraitUpsideDown"; case UIInterfaceOrientationLandscapeLeft: return @"UIInterfaceOrientationLandscapeLeft"; case UIInterfaceOrientationLandscapeRight: return @"UIInterfaceOrientationLandscapeRight"; default: return @"Unexpected"; }}static inline BOOL UIInterfaceOrientationIsSupportedOrientation(UIInterfaceOrientation interfaceOrientation){ NSArray *array = [ objectForInfoDictionaryKey:@"UISupportedInterfaceOrientations"]; NSUInteger index = ; return index != NSNotFound;}
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