iOS Development Notes

Common errors:

E001: Undefined Symbols for Architecture i386

Error Description:

Undefined Symbols for Architecture i386: ' _objc_class_$_xxx ', referenced from:objc-class-ref in Xxxld:symbol (s) not found For Architecture I386clang:error:linker command failed with exit code 1 (use-v to see invocation)

The cause of this error is generally "XXX" This file (class library) Although the introduction of the project, but for various reasons (common in multi-person development, SVN synchronization is not standardized) caused "xxx" is not added to project.pbxproj this file.

S001: Workaround: is to click on the project, in the targets interface to find build phases, according to the message "XXX" to determine the missing files, generally if the lack of custom files, XXX will be the missing class name, then in the Complie Add the file in the sources. If the class library is missing, the class library is added to the link Binary with libraries.

Reference: http://www.cnblogs.com/lovekarri/archive/2013/03/06/2945620.html

E002: Runtime, Error: Unknown class XXX in Interface Builder file.

Workaround: S001. Add the file in Complie sources.

iOS Development Notes