UITableView透明背景

Question

我收到了这段代码：

UIViewController *nextQuestionView = [[QuizzQuestionViewController alloc]init];
    nextQuestionView.view.backgroundColor=[UIColor colorWithRed:0.44 green:0.44 blue:0.41 alpha:1];
    [self.navigationController pushViewController:nextQuestionView animated:YES];
    NSLog(@"gotonextQuestion");
    [nextQuestionView newQuestion];
    [nextQuestionView release];

我想删除黑角。

感谢。