对于iOS 9，你需要添加:

if([myTableView respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
{
    myTableView.cellLayoutMarginsFollowReadableWidth = NO;
} 

详情请参阅问题。

我是这样做的:

tableView.separatorInset = UIEdgeInsetsZero;
tableView.layoutMargins = UIEdgeInsetsZero;
cell.layoutMargins = UIEdgeInsetsZero;

对我来说，简单的线条就够了

cell.layoutMargins = UIEdgeInsetsZero

使用Swift 2.2

创建UITableViewCell扩展

import UIKit

extension UITableViewCell {
    func removeMargins() {

        if self.respondsToSelector(Selector("setSeparatorInset:")) {
            self.separatorInset = UIEdgeInsetsZero
        }

        if self.respondsToSelector(Selector("setPreservesSuperviewLayoutMargins:")) {
            self.preservesSuperviewLayoutMargins = false
        }

        if self.respondsToSelector(Selector("setLayoutMargins:")) {
            self.layoutMargins = UIEdgeInsetsZero
        }
    }
} 

现在可以在cellForRowAtIndex中使用

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
            cell.removeMargins()//To remove seprator inset 
}

而不是每次单元格滚动时更新preservessuperviewlayoutmargin和layoutmargin(使用willDisplayCell)，我建议在cellForRowAtIndexPath::

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = super.tableView(tableView, cellForRowAtIndexPath: indexPath)

    cell.preservesSuperviewLayoutMargins = false
    cell.layoutMargins = UIEdgeInsetsZero

    return cell

}

让我们做我的代码:

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
    if ([tableView respondsToSelector:@selector(setSeparatorInset:)]) {
        [tableView setSeparatorInset:UIEdgeInsetsZero];
    }

    if ([tableView respondsToSelector:@selector(setLayoutMargins:)]) {
        [tableView setLayoutMargins:UIEdgeInsetsZero];
    }

    if ([tableView respondsToSelector:@selector(setLayoutMargins:)]) {
        cell.preservesSuperviewLayoutMargins = NO;
        [cell setLayoutMargins:UIEdgeInsetsZero];
    }
    if ([cell respondsToSelector:@selector(setSeparatorInset:)]){
        [cell setSeparatorInset:UIEdgeInsetsZero];
    }
}