在iOS应用中的documents文件夹内创建文件夹

- (void)creatFile{

    NSError *error;

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder

    NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/你的文件夹名称"];

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

        [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder

    }

}