In xcode code, fonts such as classes and methods become black. The file is not associated with symbol not found.

Xcode has been used for a long time,CodeThe font, such as the class and method, turns black and the file is lost.Symbol not foundEven smart prompts sometimes do not exist. This is because the project index file is damaged. You can solve this problem by using the following methods:

1. Organizer-> projects-> putAll projectsDelete derived data in.

Ii. Access~ /Library/developer/xcode/Deriveddata
Delete the folder of the project.

Link to the original article: In xcode code, fonts such as classes and methods become black, and files are lost with symbol.
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