清除caches文件夹下的某个子文件夹中的缓存

#define PATH_OF_CACHES  [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]

清除目录为default和OnlineDownloadSkyFile文件夹下的缓存

NSFileManager *fileManager = [NSFileManager defaultManager];NSArray *subCacheArray  = [fileManager contentsOfDirectoryAtPath:PATH_OF_CACHES error:nil]; for (NSString *subDir in subCacheArray) {    if ([subDir isEqualToString:@"default"] || [subDir isEqualToString:@"OnlineDownloadSkyFile"]) {    NSString *fullSubPath = [PATH_OF_CACHES stringByAppendingPathComponent:subDir];   [fileManager removeItemAtPath:fullSubPath error:nil];            }        }