NSArray *NSSearchPathForDirectoriesInDomains(
NSSearchPathDirectory directory,
NSSearchPathDomainMask domainMask,
BOOL expandTilde);
参数
directory 类型有很多，说几个常用的
NSLibraryDirectory, // various documentation, support, and configuration files, resources (Library)
NSDeveloperDirectory, // developer resources (Developer) DEPRECATED - there is no one single Developer directory.
NSUserDirectory, // user home directories (Users)
NSDocumentationDirectory, // documentation (Documentation)
NSDocumentDirectory, // documents (Documents)
NSCachesDirectory // location of discardable cache files (Library/Caches)
domainMask
NSUserDomainMask , // user's home directory --- place to install user's personal items (~)
NSLocalDomainMask , // local to the current machine --- place to install items available to everyone on this machine (/Library)
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