iOS App Extensions
3 月，跳不动了？>>> 官方参考链接 https://developer.apple.com/app-extensions/ https://developer.apple.com/library/ios/documentation/General/Conceptual/ExtensibilityPG/index.html#//apple_ref/doc/uid/TP40014214-CH20-SW1 PDF下载地址 https://developer.apple.com/library/ios/documentation/General/Conceptual/ExtensibilityPG/ExtensibilityPG.pdf 一、APPExtensions中使用Host APP中的Class Exten sion .如果API声明包含NS_EXTENSION_UNAVAILABLE宏，则此API在扩展中将不可用 + (UIApplication *)sharedApplication NS_EXTENSION_UNAVAILABLE_IOS("Use view controller based solutions where appropriate instead."); UIApplication的处理 { if (![[[NSBundle mainBundle]