Ios introduces zxing QR code to identify problems encountered by sub-projects, and ios introduces zxing

Ios introduces zxing QR code to identify problems encountered by sub-projects, and ios introduces zxing

Referring to the example on the Internet, when importing zxing sub-projects into xcode, we found that the files in the sub-project reported the file not found error and found that there must be a problem with the header file search directory, therefore, the header file directory (the root directory of the sub-project) is added to the header file search path of the main project. After checking whether the problem has been changed several times, the system still reports the same problem and finds out that the problem was originally caused by recursive. Previously, when adding a path, the default value is non-recursive, which means that the subdirectories will not be searched recursively, here we must change to recursive. Otherwise, the file not found error will be reported because the subdirectory files in the Child project cannot be found.

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