Can't find the method when making static library with class file

　　When using the framework static library made by myself, which contains class files, when importing, it reports an error saying that the method declaration cannot be found.

　　solution:

　　Add target --> Build setttings --> linking --> Other linker flags in the Framework file and add -Objc

　　In the introduction of the Framework project, target --> Build setttings --> linking --> Other linker flags add  -all_load or -force_load

　　Merge real machine and emulator Framework

　　lipo -create /Users/.../iPhone/ECSecurity.framework/ECSecurity /Users/.../Simulator/ECSecurity.framework/ECSecurity -output /Users/.../Common/ECSecurity

　　Just replace the  ECSecurity file.