NSFileManager创建文件夹

NSFileManager*fileManager = [[NSFileManager alloc] init];

    NSString *pathDocuments = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

    //缩略图路径

    createPath = [NSString stringWithFormat:@"%@/ThumbnailImage", pathDocuments];

    //原图路径

    createDir = [NSString stringWithFormat:@"%@/OriginalImage", pathDocuments];

    

    // 判断文件夹是否存在，如果不存在，则创建

    if (![[NSFileManager defaultManager] fileExistsAtPath:createPath]) {

        [fileManager createDirectoryAtPath:createPath withIntermediateDirectories:YES attributes:nil error:nil];

        [fileManager createDirectoryAtPath:createDir withIntermediateDirectories:YES attributes:nil error:nil];

    } else {

        NSLog(@"FileDir is exists.");

    }