Problems encountered by iOS introducing zxing QR Code recognition project

Referring to the online example, the Zxing sub-project into Xcode, found that the files in the sub-project file not found error, found that the header file is definitely the search directory has problems, so head file directory (sub-project root directory) added to the main project header file search path inside. Check changed several times or reported the same problem, finally found that the original is recursive problem, before joining the path when the default is non-recursive will not recursively find subdirectories, here we must change to recursive, Otherwise, the sub-directory files within the sub-project will not be found and reported file not found error

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Problems encountered by iOS introducing zxing QR Code recognition project