只需要设置背景视图的背景色:

func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int){         
  let tableHeader = view as! UITableViewHeaderFooterView        
  tableHeader.backgroundView?.backgroundColor = UIColor.white     
}

在UITableViewHeaderFooterView上设置背景色已弃用。请使用contentView。写成backgroundColor代替。

斯威夫特4

要更改UITableView Section的头视图的背景颜色、文本标签颜色和字体，只需覆盖你的表视图的willDisplayHeaderView，如下所示:

override func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
        let header = view as! UITableViewHeaderFooterView
        header.backgroundView?.backgroundColor = .white
        header.textLabel?.textColor = .black
        header.textLabel?.font = UIFont(name: "Helvetica-Bold", size: 14)
} 

这对我来说非常有效;希望它也能帮助到你!

只需要设置背景视图的背景色:

func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int){         
  let tableHeader = view as! UITableViewHeaderFooterView        
  tableHeader.backgroundView?.backgroundColor = UIColor.white     
}

Although func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) will work as well, you can acheive this without implementing another delegate method. in you func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? method, you can use view.contentView.backgroundColor = UIColor.white instead of view.backgroundView?.backgroundColor = UIColor.white which is not working. (I know that backgroundView is optional, but even when it is there, this is not woking without implementing willDisplayHeaderView

如果你不想创建一个自定义视图，你也可以像这样改变颜色(需要iOS 6):

-(void) tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section {
    if ([view isKindOfClass: [UITableViewHeaderFooterView class]]) {
        UITableViewHeaderFooterView* castView = (UITableViewHeaderFooterView*) view;
        UIView* content = castView.contentView;
        UIColor* color = [UIColor colorWithWhite:0.85 alpha:1.]; // substitute your color here
        content.backgroundColor = color;
    }
}