blocks|key|4565821|text|我从这篇文章中得到了答案：iOS+8+UITableView+separator+inset+0+not+working|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4565822|只需在您的UITableViewController上添加以下代码|style|CODE|4565823|-(void)tableView:(UITableView+*)tableView+willDisplayCell:(UITableViewCell+*)cell+forRowAtIndexPath:(NSIndexPath+*)indexPath
{
++++if+([cell+respondsToSelector:@selector(setSeparatorInset:)])+{
++++++++[cell+setSeparatorInset:UIEdgeInsetsZero];
++++}

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

-(void)viewDidLayoutSubviews
{
++++[super+viewDidLayoutSubviews];
++++if+([self.tableView+respondsToSelector:@selector(setSeparatorInset:)])+{
++++++++[self.tableView+setSeparatorInset:UIEdgeInsetsZero];
++++}

++++if+([self.tableView+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++[self.tableView+setLayoutMargins:UIEdgeInsetsZero];
++++}
}|code-block|syntax|javascript|4565824|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/25770119/ios-8-uitableview-separator-inset-0-not-working^0|D|1B|0|0|5|L|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@$A|Z|B|10|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|11|8|@]|9|@]|C|$K|L]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

I got the answer from this post: <a href="https://stackoverflow.com/questions/25770119/ios-8-uitableview-separator-inset-0-not-working">iOS 8 UITableView separator inset 0 not working</a>

Just add this code on your <code>UITableViewController</code>

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

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

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

 if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
 [self.tableView setLayoutMargins:UIEdgeInsetsZero];
 }
}
</code></pre>

blocks|key|4565849|text|我继承了UITableViewController，除了willDisplayCell中的两个insets设置之外，还需要将preservesSuperviewLayoutMargins设置为false。在Swift中，它看起来像这样：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4565850|override+func+tableView(_tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,+forRowAtIndexPath+indexPath:+NSIndexPath)+{

++++if+cell.respondsToSelector("setSeparatorInset:")+{
++++++++cell.separatorInset+=+UIEdgeInsetsZero
++++}
++++if+cell.respondsToSelector("setLayoutMargins:")+{
++++++++cell.layoutMargins+=+UIEdgeInsetsZero
++++}
++++if+cell.respondsToSelector("setPreservesSuperviewLayoutMargins:")+{
++++++++cell.preservesSuperviewLayoutMargins+=+false
++++}
}|code-block|syntax|javascript|4565851|entityMap^0|4|L|S|F|1Q|V|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

I inherit from <code>UITableViewController</code> and needed additional to the two insets settings in <code>willDisplayCell</code> also to set <code>preservesSuperviewLayoutMargins</code> to false. In Swift it looks like this:

<pre><code>override func tableView(_tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {

 if cell.respondsToSelector("setSeparatorInset:") {
 cell.separatorInset = UIEdgeInsetsZero
 }
 if cell.respondsToSelector("setLayoutMargins:") {
 cell.layoutMargins = UIEdgeInsetsZero
 }
 if cell.respondsToSelector("setPreservesSuperviewLayoutMargins:") {
 cell.preservesSuperviewLayoutMargins = false
 }
}
</code></pre>

blocks|key|59619|text|在你的UITableViewCell中|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|59620|转到界面生成器中的Attributes+Inspector，简单地将"15“更改为0。对您希望更改的所有单元格执行此操作。|59621|​|59622|📷|atomic|59623|59624|您可能需要在tableViewCell中添加[cell+setLayoutMargins:UIEdgeInsetsZero];|59625|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/27a41e109cf73d422300b8d467c5ceeb.png|imageAlt^0|3|F|0|0|0|0|1|0|0|0|6|D|M|15|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|12|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|13|8|@]|D|@$9|14|A|15|1|16]]|E|$]]|$1|M|3|I|5|6|7|17|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W|X|-4]]]]

In your <code>UITableViewCell</code>

Go to Attributes Inspector in your Interface Builder and simply change "15" to 0. Do this for all the cells you wish to change.

<a href="https://i.stack.imgur.com/A8rY1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/A8rY1.png" alt="instets"></a>

You may need to add <code>[cell setLayoutMargins:UIEdgeInsetsZero];</code> to your <code>tableViewCell</code>

blocks|key|4565959|text|已针对iOS+9.3和Swift+2.2进行测试。确保将代码放在显示单元格之前调用的willDisplayCell中，而不是放在仅创建单元格的cellForRowAtIndexPath中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4565960|func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,+forRowAtIndexPath+indexPath:+NSIndexPath)+{
++++cell.separatorInset+=+UIEdgeInsetsZero
++++cell.layoutMargins+=+UIEdgeInsetsZero
}|code-block|syntax|javascript|4565961|将override添加到UITableViewController函数中，如下所示：|4565962|override+func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,+forRowAtIndexPath+indexPath:+NSIndexPath)+{|4565963|entityMap^0|16|F|1Z|L|0|0|1|8|C|L|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|P|$]]

Tested for iOS 9.3 &amp; Swift 2.2. Make sure to put the code in <code>willDisplayCell</code> which is called just before displaying the cell and not in <code>cellForRowAtIndexPath</code> where you create the cell only.

<pre><code>func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
 cell.separatorInset = UIEdgeInsetsZero
 cell.layoutMargins = UIEdgeInsetsZero
}
</code></pre>

Add <code>override</code> to the function for <code>UITableViewController</code>, like so: 

<pre><code>override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
</code></pre>

blocks|key|4566016|text|在Swift+2.2和Xcode+7.3.1中，上述方法都不适用于我|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4566017|事实证明，这是所有解决方案中最简单的。不需要代码。只需在UITableView检查器中更改TableViewCell布局边距的值：|offset|length|style|CODE|4566018|​|4566019|📷|atomic|4566020|4566021|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/48a6105c18271f83d90d7aecb8016d75.png|imageAlt^0|0|S|B|19|D|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]|$D|10|E|11|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|13|8|@]|9|@$D|14|E|15|1|16]]|A|$]]|$1|M|3|I|5|6|7|17|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U|V|-4]]]]

None of the above worked for me in Swift 2.2 and Xcode 7.3.1

Turned out to be the simplest solution of all. No code needed. Just change <code>TableViewCell</code> Layout Margins values in your <code>UITableView</code> inspector:

<img src="https://i.stack.imgur.com/0TC8z.png" alt="">

blocks|key|4566067|text|针对iOS+9%2B中的Swift|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4566068|如果使用自定义UITableViewCell|offset|length|style|CODE|4566069|override+var+layoutMargins:+UIEdgeInsets+{
++++get+{+return+UIEdgeInsetsZero+}
++++set(newVal)+{}
}|code-block|syntax|javascript|4566070|然后，对于viewDidLoad中的UITableView：|4566071|self.tableView?.separatorInset+=+UIEdgeInsetsZero;
self.tableView?.layoutMargins+=+UIEdgeInsetsZero;|4566072|entityMap^0|0|7|F|0|0|5|B|I|B|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|X|8|@$D|Y|E|Z|F|G]|$D|10|E|11|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

For Swift in iOS 9+

If using a custom <code>UITableViewCell</code>:

<pre><code>override var layoutMargins: UIEdgeInsets {
 get { return UIEdgeInsetsZero }
 set(newVal) {}
}
</code></pre>

then for your <code>UITableView</code> in <code>viewDidLoad</code>: 

<pre><code>self.tableView?.separatorInset = UIEdgeInsetsZero;
self.tableView?.layoutMargins = UIEdgeInsetsZero;
</code></pre>

blocks|key|4566106|text|在cellForRowAtIndexPath方法中使用它来配置单元格的分隔符规格，|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4566107|它非常适合iOS9.0%2B|4566108|+cell.separatorInset+=+UIEdgeInsetsZero;
+cell.layoutMargins+=+UIEdgeInsetsZero;
+cell.preservesSuperviewLayoutMargins+=+NO;|code-block|syntax|javascript|4566109|entityMap^0|1|L|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Use it in <code>cellForRowAtIndexPath</code> method, to configure cell's separator specs , 
it works perfect for iOS9.0+

<pre><code> cell.separatorInset = UIEdgeInsetsZero;
 cell.layoutMargins = UIEdgeInsetsZero;
 cell.preservesSuperviewLayoutMargins = NO;
</code></pre>

blocks|key|59837|text|对于Swift+3：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|59838|override+func+viewDidLoad()+{
++super.viewDidLoad()

++tableView.separatorInset+=+.zero
++tableView.layoutMargins+=+.zero
}|code-block|syntax|javascript|59839|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

for Swift 3 :

<pre><code>override func viewDidLoad() {
 super.viewDidLoad()

 tableView.separatorInset = .zero
 tableView.layoutMargins = .zero
}
</code></pre>

blocks|key|4566158|text|对于那些对iPad有问题的人来说--这会让你进入一个和iPhone一样的状态。然后，您可以根据需要调整separatorInset。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4566159|tableView.cellLayoutMarginsFollowReadableWidth+=+false|code-block|syntax|javascript|4566160|entityMap^0|1F|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

For people having issues with the iPad — this will get you in a state that is the same as the iPhone. You can then adjust the <code>separatorInset</code> as needed.

<pre><code>tableView.cellLayoutMarginsFollowReadableWidth = false
</code></pre>

blocks|key|59892|text|对于Swift+3：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|59893|func+tableView(_+tableView:+UITableView,+willDisplay+cell:+UITableViewCell,+forRowAt+indexPath:+IndexPath)+{
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.separatorInset))+{
++++++++cell.separatorInset+=+UIEdgeInsets.zero
++++}
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.layoutMargins))+{
++++++++cell.layoutMargins+=+UIEdgeInsets.zero
++++}
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.preservesSuperviewLayoutMargins))+{
++++++++cell.preservesSuperviewLayoutMargins+=+false
++++}
}|code-block|syntax|javascript|59894|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For Swift 3 :

<pre><code>func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
 if cell.responds(to: #selector(setter: UITableViewCell.separatorInset)) {
 cell.separatorInset = UIEdgeInsets.zero
 }
 if cell.responds(to: #selector(setter: UITableViewCell.layoutMargins)) {
 cell.layoutMargins = UIEdgeInsets.zero
 }
 if cell.responds(to: #selector(setter: UITableViewCell.preservesSuperviewLayoutMargins)) {
 cell.preservesSuperviewLayoutMargins = false
 }
}
</code></pre>

blocks|key|4566220|text|在viewDidLoad中(经过测试的iOS11+-+swift+4.1)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4566221|试一试|4566222|tableView.separatorInset+=+UIEdgeInsetsMake(0,+0,+0,+0)|4566223|entityMap^0|1|B|0|0|0|1J|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|K|$]]

In <code>viewDidLoad</code> (tested iOS11 - swift 4.1)

try 

<code>tableView.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)</code>

blocks|key|4566285|text|默认情况下，分隔符Inset是从左开始的15。将Separator+Inset选项从auto更改为custom，并将inset设置为0。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4566286|​|4566287|📷|atomic|4566288|4566289|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/736d2b109c4409537743384a29bf3caa.png|imageAlt^0|9|5|Y|5|16|4|1D|6|1U|1|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|16|8|@]|D|@$9|17|A|18|1|19]]|E|$]]|$1|K|3|G|5|6|7|1A|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S|T|-4]]]]

The Separator <code>Inset</code> is by default 15 from left. Change Separator <code>Inset</code> option from <code>auto</code> to <code>custom</code> and set the inset to <code>0</code>.

<a href="https://i.stack.imgur.com/l40TC.png" rel="noreferrer"><img src="https://i.stack.imgur.com/l40TC.png" alt="enter image description here"></a>

blocks|key|60081|text|swift+5，Xcode+11更新|type|unstyled|depth|inlineStyleRanges|entityRanges|data|60082|将此代码放入viewDidLoad()|60083|yourTableView.separatorInset+=+UIEdgeInsets(top:+0,+left:+0,+bottom:+0,+right:+0)|code-block|syntax|javascript|60084|对于边到边分隔符，只需将left和right的值设置为0即可。|60085|顺便说一下，将"yourTableView“更改为您的tableView插座名称。|60086|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

swift 5, Xcode 11 Update

place this inside viewDidLoad()

<pre><code>yourTableView.separatorInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
</code></pre>

for edge to edge separator just set the value of left and right to 0.

by the way change the "yourTableView" to your tableView Outlet name.

I have a <code>UITableView</code> where the separators don't have the full width. It ends like 10 pixels before the left side. I was playing around with this code in the <code>viewDidLoad()</code>.

<pre><code>self.tableView.layoutMargins = UIEdgeInsetsZero;
</code></pre>

Also in the storyboard when you can select custom or default selectors. Now all the cells that are populated don't have the full-width selectors but the cells that are empty have full width.

How can I fix this?

How to set the full width of separator in UITableView

Swift

Xcode

我有一个UITableView，其中的分隔符没有全宽。它在左侧前10个像素结束。我在viewDidLoad()中使用了这段代码。self.tableView.layoutMargins = UIEdgeInsetsZero;也可以在故事板中选择自定义选择器或默认选择器。现在，所有填充的单元格都没有全宽选择器，但空的单元...

问如何在UITableView中设置分隔符的全宽
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问如何在UITableView中设置分隔符的全宽
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