我浏览了所有这些精彩的答案，发现其中大多数都不能在iOS 8上运行，或者可以工作，但分隔符在动画期间改变大小，导致不必要的闪烁。这是我在创建窗口之前在我的应用委托中所做的事情:

[[UITableView appearance] setSeparatorInset:UIEdgeInsetsZero];
[[UITableViewCell appearance] setSeparatorInset:UIEdgeInsetsZero];

if ([UITableView instancesRespondToSelector:@selector(setLayoutMargins:)]) {
    [[UITableView appearance] setLayoutMargins:UIEdgeInsetsZero];
    [[UITableViewCell appearance] setLayoutMargins:UIEdgeInsetsZero];
    [[UITableViewCell appearance] setPreservesSuperviewLayoutMargins:NO];
}

这是我添加到UITableViewController的:

-(void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

    if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
        [self.tableView setSeparatorInset:UIEdgeInsetsZero];
    }

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

我不需要再添加任何东西了。感谢所有提供关键信息的人。

在Swift中，这有点烦人，因为layoutmargin是一个属性，所以你必须重写getter和setter。

override var layoutMargins: UIEdgeInsets {
  get { return UIEdgeInsetsZero }
  set(newVal) {}
}

这将有效地使layoutmargin为只读，这在我的情况下是好的。

在盲目地试图解决问题之前，让我们花点时间来了解一下这个问题。

在调试器中快速浏览会告诉你分隔行是UITableViewCell的子视图。似乎单元格本身对这些线条的布局负有相当大的责任。

iOS 8引入了布局边距的概念。默认情况下，视图的布局边距为8pt，它们继承自祖先视图。

正如我们所能告诉的，当布局它的分隔线时，UITableViewCell选择尊重左边的布局边距，使用它来约束左边的插图。

把所有这些放在一起，为了实现真正为零的理想插入，我们需要:

将左侧布局边距设置为0 停止任何继承的边缘覆盖它

这样说来，这是一个相当简单的任务:

cell.layoutMargins = UIEdgeInsetsZero;
cell.preservesSuperviewLayoutMargins = NO;

注意事项:

This code only needs to be run once per cell (you're just configuring the cell's properties after all), and there's nothing special about when you choose to execute it. Do what seems cleanest to you. Sadly neither property is available to configure in Interface Builder, but you can specify a user-defined runtime attribute for preservesSuperviewLayoutMargins if desired. Clearly, if your app targets earlier OS releases too, you'll need to avoid executing the above code until running on iOS 8 and above. Rather than setting preservesSuperviewLayoutMargins, you can configure ancestor views (such as the table) to have 0 left margin too, but this seems inherently more error-prone as you don't control that entire hierarchy. It would probably be slightly cleaner to set only the left margin to 0 and leave the others be. If you want to have a 0 inset on the "extra" separators that UITableView draws at the bottom of plain style tables, I'm guessing that will require specifying the same settings at the table level too (haven't tried this one!)

我的解决方案是添加一个UIView作为单元格子视图的容器。然后设置这个UIView约束(顶部，底部，尾部，前导)为0点。所有不必要的质量都消失了。显示逻辑的图像

在3楼看到答案后，我试图弄清楚设置TableView和TableViewCell之间的分隔符是什么关系，并做了一些测试。以下是我的结论:

we can consider that setting the cell's separator to zero has to move the separator in two steps: first step is to set cell's separatorinset to zero. second step is to set cell's marginlayout to zero. set the TableView's separatorinset and marginlayout can affect the Cell's separatorinset. However, from the test, I find that the TableView's separatorinset seem to be useless, TableView's marginlayout can actually affect cell's marginlayout. set Cell's PreservesSuperviewLayoutMargins = false, can cut off TableView's marginlayout effect on Cells. one of the solutions: func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { var cell = UITableViewCell() cell.preservesSuperviewLayoutMargins = false cell.separatorInset = UIEdgeInsetsZero cell.layoutMargins = UIEdgeInsetsZero return cell }

iOS 8及更高版本。Swift 2.0及更高版本:

override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    cell.separatorInset = UIEdgeInsetsZero
    if #available(iOS 8.0, *) {
        cell.layoutMargins = UIEdgeInsetsZero
    } else {
        // Fallback on earlier versions
    }
}