怎样为Grouped UITableView增加一个好看的背景颜色

UIView *backgroundView = [[UIView alloc] initWithFrame: window.frame]; 
backgroundView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"TableViewBackground.png"]]; 
[window addSubview:backgroundView]; 
[backgroundView release]; 
 
yourTableViewController = [[ATableViewController alloc] initWithStyle:UITableViewStyleGrouped]; 
yourTableViewController.view.backgroundColor = [UIColor clearColor]; 
[window addSubview:yourTableViewController.view]; 
 
[window makeKeyAndVisible];