在框架開發中,爲了適配最低的系統版本,咱們須要注意不使用高版本API。但除了我的注意以外,是否能夠在編譯時由系統提示超出兼容版本的API使用狀況呢,ios
觀察了CF_AVAILABLE_IOS宏以後,咱們給出了以下解決方案,即更改iOS SDK。具體方案以下:框架
添加位置: Frameworks-> CoreFoundation -> CFAvalailability.h line 115 添加代碼:開發
/* added by Mitty */it
#define __NEP_2_0 availability(ios,introduced=2.0)io
#define __NEP_2_1 availability(ios,introduced=2.1)編譯
#define __NEP_2_2 availability(ios,introduced=2.2)兼容
#define __NEP_3_0 availability(ios,introduced=3.0)解決方案
#define __NEP_3_1 availability(ios,introduced=3.1)new
#define __NEP_3_2 availability(ios,introduced=3.2)版本
#define __NEP_4_0 availability(ios,introduced=4.0)
#define __NEP_4_1 availability(ios,introduced=4.1)
#define __NEP_4_2 availability(ios,introduced=4.2)
#define __NEP_4_3 availability(ios,introduced=4.3)
#define __NEP_5_0 availability(ios,introduced=5.0)
#define __NEP_5_1 availability(ios,introduced=5.1)
#define __NEP_6_0 availability(ios,introduced=6.0)
#define __NEP_6_1 deprecated("API version newer than iOS6.0")
#define __NEP_7_0 deprecated("API version newer than iOS6.0")
#define __NEP_7_1 deprecated("API version newer than iOS6.0")
#define __NEP_8_0 deprecated("API version newer than iOS6.0")
#define __NEP_8_1 deprecated("API version newer than iOS6.0")
#define __NEP_8_2 deprecated("API version newer than iOS6.0")
#define __NEP_8_3 deprecated("API version newer than iOS6.0")
#define __NEP_9_0 deprecated("API version newer than iOS6.0")
#define __NEP_9_1 deprecated("API version newer than iOS6.0")
#define __NEP_10_0 deprecated("API version newer than iOS6.0")
#define __NEP_10_1 deprecated("API version newer than iOS6.0")
#define __NEP_10_2 deprecated("API version newer than iOS6.0")
#define __NEP_10_3 deprecated("API version newer than iOS6.0")
#define __NEP_10_4 deprecated("API version newer than iOS6.0")
#define __NEP_10_5 deprecated("API version newer than iOS6.0")
#define __NEP_10_6 deprecated("API version newer than iOS6.0")
#define __NEP_10_7 deprecated("API version newer than iOS6.0")
#define __NEP_10_8 deprecated("API version newer than iOS6.0")
#define __NEP_10_9 deprecated("API version newer than iOS6.0")
#define __NEP_10_10 deprecated("API version newer than iOS6.0")
#define CF_AVAILABLE_IOS(_ios) \
__attribute__((,__NEP_##_ios))
/* added by Mitty End */