串連的靜態庫有庫類使用category時。。。

When using a static library which includes categories we will also have to add the “-ObjC” flag to the “Other Linker Flags” build setting. This will force the linker to load all objective-c classes and categories from the library. If the library contains only categories “-all_load” or “-force_load” may be needed as well. See Technical Q&A QA1490 for a more detailed explanation of these settings.

 

當靜態庫有庫自己使用的category時，應當把靜態庫配置Build Settings\Linking\Other Linker Flags\裡加入-all_load和-ObjC,

而使用此靜態庫的app需要配置Build Settings\Linking\Other Linker Flags\裡加入-ObjC。