.hで: #define APPLICATION_DOC_DIR [NSHomeDirectory() stringByAppendingPathComponent: @"Documents"] 「testtest」フォルダを削除したい場合、.mで: NSFileManager *fileManager = [NSFileManager defaultManager]; NSString *docPath = APPLICATION_DOC_DIR; NSString *folderPath = [[NSString alloc] initWithFormat:@"%@/%@", docPath, @"testtest"]; NSError *error; BOOL result; result = [fileManager removeItemAtPath:folderPath erro