blocks|key|1644477|text|阿格！在您的Cell子类中执行这两种操作之后：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1644478|-+(UIEdgeInsets)layoutMargins
{
++++return+UIEdgeInsetsZero;
}|code-block|syntax|javascript|1644479|或者设置cell.layoutMargins+=+UIEdgeInsetsZero;为我修复了它。|1644480|entityMap^0|6|4|0|0|4|12|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

Arg!!! After playing around either doing this in your <code>Cell</code> subclass: 

<pre><code>- (UIEdgeInsets)layoutMargins
{
 return UIEdgeInsetsZero;
}
</code></pre>

or setting the <code>cell.layoutMargins = UIEdgeInsetsZero;</code> fixed it for me.

blocks|key|405192|text|在Swift中，这稍微麻烦一些，因为layoutMargins是一个属性，所以您必须重写getter和setter。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|405193|override+var+layoutMargins:+UIEdgeInsets+{
++get+{+return+UIEdgeInsetsZero+}
++set(newVal)+{}
}|code-block|syntax|javascript|405194|这将有效地使layoutMargins成为只读的，这在我的例子中是很好的。|405195|entityMap^0|I|D|0|0|6|D|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

In Swift it's slightly more annoying because <code>layoutMargins</code> is a property, so you have to override the getter and setter.

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

This will effectively make <code>layoutMargins</code> readonly, which in my case is fine.

blocks|key|1644592|text|我相信这是我在这里问的同一个问题：删除iOS+8+UITableView上的XCode+6+iPhone模拟器|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1644593|在iOS+8中，对于从UIView继承的所有对象都有一个新的属性。因此，在SeparatorInset+7.x中设置iOS的解决方案将无法删除在iOS+8中的UITableView上看到的空白。|style|BOLD|CODE|1644594|这个新属性称为"layoutMargins".|1644595|@property(nonatomic)+UIEdgeInsets+layoutMargins
Description+++The+default+spacing+to+use+when+laying+out+content+in+the+view.
Availability++iOS+(8.0+and+later)
Declared+In+++UIView.h
Reference+UIView+Class+Reference|code-block|syntax|javascript|1644596|​|1644597|📷|atomic|1644598|1644599|解决办法：-|1644600|-(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+([cell+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++[cell+setLayoutMargins:UIEdgeInsetsZero];
+++}
}|1644601|如果您在没有检查cell.layoutMargins+=+UIEdgeInsetsZero;是否存在的情况下设置了layoutMargins，应用程序将在iOS+7.x上崩溃。因此，最好的方法是先检查layoutMargins是否先存在于setLayoutMargins:UIEdgeInsetsZero之前。|1644602|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/25762723/remove-separatorinset-on-ios-8-uitableview-for-xcode-6-iphone-simulator|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/bf70a68df62d7ca72a3aa38e4de6b1ec.png|imageAlt^0|H|12|0|0|1|5|B|6|11|E|0|8|D|0|0|0|0|1|1|0|0|0|0|8|12|1L|D|2S|D|3B|X|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@$A|1G|B|1H|1|1I]]|C|$]]|$1|D|3|E|5|6|7|1J|8|@$A|1K|B|1L|F|G]|$A|1M|B|1N|F|H]|$A|1O|B|1P|F|H]]|9|@]|C|$]]|$1|I|3|J|5|6|7|1Q|8|@$A|1R|B|1S|F|G]]|9|@]|C|$]]|$1|K|3|L|5|M|7|1T|8|@]|9|@]|C|$N|O]]|$1|P|3|Q|5|6|7|1U|8|@]|9|@]|C|$]]|$1|R|3|S|5|T|7|1V|8|@]|9|@$A|1W|B|1X|1|1Y]]|C|$]]|$1|U|3|Q|5|6|7|1Z|8|@]|9|@]|C|$]]|$1|V|3|W|5|6|7|20|8|@]|9|@]|C|$]]|$1|X|3|Y|5|M|7|21|8|@]|9|@]|C|$N|O]]|$1|Z|3|10|5|6|7|22|8|@$A|23|B|24|F|H]|$A|25|B|26|F|H]|$A|27|B|28|F|H]|$A|29|B|2A|F|H]]|9|@]|C|$]]|$1|11|3|-4|5|6|7|2B|8|@]|9|@]|C|$]]]|12|$13|$5|14|15|16|C|$17|18]]|19|$5|1A|15|1B|C|$1C|1D|1E|-4]]]]

I believe this is the same question that I asked here: <a href="https://stackoverflow.com/questions/25762723/remove-separatorinset-on-ios-8-uitableview-for-xcode-6-iphone-simulator">Remove SeparatorInset on iOS 8 UITableView for XCode 6 iPhone Simulator</a>

In iOS 8, there is one new property for all the objects inherit from <code>UIView</code>. So, the solution to set the <code>SeparatorInset</code> in iOS 7.x will not be able to remove the white space you see on the UITableView in iOS 8. 

The new property is called "layoutMargins".

<pre><code>@property(nonatomic) UIEdgeInsets layoutMargins
Description The default spacing to use when laying out content in the view.
Availability iOS (8.0 and later)
Declared In UIView.h
Reference UIView Class Reference
</code></pre>

<img src="https://i.stack.imgur.com/ieR9l.png" alt="iOS 8 UITableView setSeparatorInset:UIEdgeInsetsZero setLayoutMargins:UIEdgeInsetsZero">

The solution:-

<pre><code>-(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 ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
 [cell setLayoutMargins:UIEdgeInsetsZero];
 }
}
</code></pre>

If you set <code>cell.layoutMargins = UIEdgeInsetsZero;</code> without checking if the <code>layoutMargins</code> exists, the app will crash on iOS 7.x. So, the best way would be checking if the <code>layoutMargins</code> exists first before <code>setLayoutMargins:UIEdgeInsetsZero</code>.

blocks|key|661372|text|iOS+8.0在单元格和表视图上引入了layoutMargins属性。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|661373|此属性在iOS+7.0上不可用，因此您需要确保在分配它之前检查它！|661374|简单的修复方法是按照@user3570727的建议，对单元格进行子类化，并覆盖布局边距属性。但是，您将失去任何系统行为，比如从安全区域继承空白，因此我不推荐以下解决方案：|661375|(ObjectiveC)|661376|-(UIEdgeInsets)layoutMargins+{+
+++++return+UIEdgeInsetsZero+//+override+any+margins+inc.+safe+area
}|code-block|syntax|javascript|661377|(swift+4.2)：|661378|override+var+layoutMargins:+UIEdgeInsets+{+get+{+return+.zero+}+set+{+}+}|661379|如果您不想重写该属性，或者需要有条件地设置它，请继续阅读。|661380|除了layoutMargins属性之外，苹果还向您的单元格中添加了一个属性，这将阻止它继承表视图的边距设置。设置此属性时，允许单元格在表视图之外配置自己的边距。把它想象成一种覆盖。|CODE|661381|此属性称为preservesSuperviewLayoutMargins，将其设置为NO将允许单元格的layoutMargin设置覆盖在TableView上设置的任何layoutMargin。这既节省了时间(，您不必修改表视图的设置)，而且更简洁。有关详细解释，请参阅迈克·阿卜杜拉的答复。|661382|注意:下面是单元格级保证金设置__的清晰实现，如Mike的答案所示。设置单元格的preservesSuperviewLayoutMargins=NO将确保表视图不会覆盖单元格设置。如果您确实希望整个表视图具有一致的边距，请相应地调整代码。|661383|设置单元格边距：|661384|-(void)tableView:(UITableView+*)tableView+willDisplayCell:(UITableViewCell+*)cell+forRowAtIndexPath:(NSIndexPath+*)indexPath
{
++++//+Remove+seperator+inset
++++if+([cell+respondsToSelector:@selector(setSeparatorInset:)])+{
+++++++++++[cell+setSeparatorInset:UIEdgeInsetsZero];
++++}

++++//+Prevent+the+cell+from+inheriting+the+Table+View's+margin+settings
++++if+([cell+respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)])+{
++++++++[cell+setPreservesSuperviewLayoutMargins:NO];
++++}

++++//+Explictly+set+your+cell's+layout+margins
++++if+([cell+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++[cell+setLayoutMargins:UIEdgeInsetsZero];
++++}
}|661385|Swift+4:|661386|func+tableView(_+tableView:+UITableView,+willDisplay+cell:+UITableViewCell,+forRowAt+indexPath:+IndexPath)+{
++++//+Remove+seperator+inset
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.separatorInset))+{
++++++++cell.separatorInset+=+.zero
++++}
++++//+Prevent+the+cell+from+inheriting+the+Table+View's+margin+settings
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.preservesSuperviewLayoutMargins))+{
++++++++cell.preservesSuperviewLayoutMargins+=+false
++++}
++++//+Explictly+set+your+cell's+layout+margins
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.layoutMargins))+{
++++++++cell.layoutMargins+=+.zero
++++}
}|661387|将单元格上的preservesSuperviewLayoutMargins属性设置为无，则应阻止表视图覆盖单元格边距。在某些情况下，它似乎不能正常运作。|661388|如果所有操作都失败，您可以强制您的表视图边距：：|661389|-(void)viewDidLayoutSubviews
{
++++[super+viewDidLayoutSubviews];

++++//+Force+your+tableview+margins+(this+may+be+a+bad+idea)
++++if+([self.tableView+respondsToSelector:@selector(setSeparatorInset:)])+{
++++++++[self.tableView+setSeparatorInset:UIEdgeInsetsZero];
++++}

++++if+([self.tableView+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++[self.tableView+setLayoutMargins:UIEdgeInsetsZero];
++++}
}+|661390|Swift+4:|661391|func+viewDidLayoutSubviews()+{
++++super.viewDidLayoutSubviews()
++++//+Force+your+tableview+margins+(this+may+be+a+bad+idea)
++++if+tableView.responds(to:+#selector(setter:+UITableView.separatorInset))+{
++++++++tableView.separatorInset+=+.zero
++++}
++++if+tableView.responds(to:+#selector(setter:+UITableView.layoutMargins))+{
++++++++tableView.layoutMargins+=+.zero
++++}
}|661392|...and，给你！这应该适用于iOS+7和8。|661393|编辑：+Mohamed+Saleh提请我注意iOS+9中的一个可能的更改。如果要自定义嵌入或页边距，则可能需要将表视图的cellLayoutMarginsFollowReadableWidth设置为NO。您的里程可能会有所不同，这不是很好的记录。|661394|此属性仅存在于iOS+9中，因此请确保在设置之前进行检查。|661395|if([myTableView+respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
{
++++myTableView.cellLayoutMarginsFollowReadableWidth+=+NO;
}+|661396|Swift+4:|661397|if+myTableView.responds(to:+#selector(setter:+self.cellLayoutMarginsFollowReadableWidth))+{
++++myTableView.cellLayoutMarginsFollowReadableWidth+=+false
}|661398|(以上代码来自iOS+8+UITableView分隔符inset+0不工作)|661399|编辑:这里有一个纯接口生成器方法：|661400|​|661401|📷|atomic|661402|661403|661404|注意:+iOS+11的更改&简化了大部分这种行为，一个更新将会到来.|661405|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/25770119/ios-8-uitableview-separator-inset-0-not-working/32860532#32860532|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/3990100695e120545a136639aec12ac1.png|imageAlt|2|https://developer.qcloudimg.com/http-save/yehe-900000/e29c0b26e3d9067c84c26cc064f293cc.png^0|0|Z|0|0|X|0|0|2D|0|0|C|0|0|0|C|0|0|0|T|0|0|2I|2|D|0|0|41|5|V|16|2|1F|C|2B|C|0|0|3B|14|Y|0|0|8|0|0|0|8|0|0|0|24|6|V|0|0|O|0|0|0|8|0|0|0|O|0|0|3|4|3B|1O|10|2R|2|0|0|T|0|0|0|8|0|0|0|12|7|U|0|0|0|H|0|0|1|0|0|1|0|1|1|0|0|1|0|1|2|0|0|1|0|0|Y|0^^$0|@$1|2|3|4|5|6|7|2Q|8|@$9|2R|A|2S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|2T|8|@$9|2U|A|2V|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|2W|8|@$9|2X|A|2Y|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|2Z|8|@$9|30|A|31|B|C]]|D|@]|E|$]]|$1|L|3|M|5|N|7|32|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|33|8|@$9|34|A|35|B|C]]|D|@]|E|$]]|$1|S|3|T|5|N|7|36|8|@]|D|@]|E|$O|P]]|$1|U|3|V|5|6|7|37|8|@$9|38|A|39|B|C]]|D|@]|E|$]]|$1|W|3|X|5|6|7|3A|8|@$9|3B|A|3C|B|C]|$9|3D|A|3E|B|Y]]|D|@]|E|$]]|$1|Z|3|10|5|6|7|3F|8|@$9|3G|A|3H|B|C]|$9|3I|A|3J|B|Y]|$9|3K|A|3L|B|Y]|$9|3M|A|3N|B|Y]|$9|3O|A|3P|B|Y]]|D|@]|E|$]]|$1|11|3|12|5|6|7|3Q|8|@$9|3R|A|3S|B|C]|$9|3T|A|3U|B|Y]]|D|@]|E|$]]|$1|13|3|14|5|6|7|3V|8|@$9|3W|A|3X|B|C]]|D|@]|E|$]]|$1|15|3|16|5|N|7|3Y|8|@]|D|@]|E|$O|P]]|$1|17|3|18|5|6|7|3Z|8|@$9|40|A|41|B|C]]|D|@]|E|$]]|$1|19|3|1A|5|N|7|42|8|@]|D|@]|E|$O|P]]|$1|1B|3|1C|5|6|7|43|8|@$9|44|A|45|B|C]|$9|46|A|47|B|Y]]|D|@]|E|$]]|$1|1D|3|1E|5|6|7|48|8|@$9|49|A|4A|B|C]]|D|@]|E|$]]|$1|1F|3|1G|5|N|7|4B|8|@]|D|@]|E|$O|P]]|$1|1H|3|1I|5|6|7|4C|8|@$9|4D|A|4E|B|C]]|D|@]|E|$]]|$1|1J|3|1K|5|N|7|4F|8|@]|D|@]|E|$O|P]]|$1|1L|3|1M|5|6|7|4G|8|@$9|4H|A|4I|B|C]]|D|@]|E|$]]|$1|1N|3|1O|5|6|7|4J|8|@$9|4K|A|4L|B|C]|$9|4M|A|4N|B|C]|$9|4O|A|4P|B|Y]|$9|4Q|A|4R|B|Y]]|D|@]|E|$]]|$1|1P|3|1Q|5|6|7|4S|8|@$9|4T|A|4U|B|C]]|D|@]|E|$]]|$1|1R|3|1S|5|N|7|4V|8|@]|D|@]|E|$O|P]]|$1|1T|3|1U|5|6|7|4W|8|@$9|4X|A|4Y|B|C]]|D|@]|E|$]]|$1|1V|3|1W|5|N|7|4Z|8|@]|D|@]|E|$O|P]]|$1|1X|3|1Y|5|6|7|50|8|@$9|51|A|52|B|C]]|D|@$9|53|A|54|1|55]]|E|$]]|$1|1Z|3|20|5|6|7|56|8|@$9|57|A|58|B|C]]|D|@]|E|$]]|$1|21|3|22|5|6|7|59|8|@$9|5A|A|5B|B|C]]|D|@]|E|$]]|$1|23|3|24|5|25|7|5C|8|@$9|5D|A|5E|B|C]]|D|@$9|5F|A|5G|1|5H]]|E|$]]|$1|26|3|24|5|25|7|5I|8|@$9|5J|A|5K|B|C]]|D|@$9|5L|A|5M|1|5N]]|E|$]]|$1|27|3|22|5|6|7|5O|8|@$9|5P|A|5Q|B|C]]|D|@]|E|$]]|$1|28|3|29|5|6|7|5R|8|@$9|5S|A|5T|B|C]]|D|@]|E|$]]|$1|2A|3|-4|5|6|7|5U|8|@]|D|@]|E|$]]]|2B|$2C|$5|2D|2E|2F|E|$2G|2H]]|2I|$5|2J|2E|2K|E|$2L|2M|2N|-4]]|2O|$5|2J|2E|2K|E|$2L|2P|2N|-4]]]]

iOS 8.0 introduces the layoutMargins property on cells AND table views.

This property isn't available on iOS 7.0 so you need to make sure you check before assigning it!

The easy fix is to subclass your cell and override the layout margins property as suggested by @user3570727. However you will lose any system behavior like inheriting margins from the Safe Area so I do not recommend the below solution:

(ObjectiveC)

<pre><code>-(UIEdgeInsets)layoutMargins { 
 return UIEdgeInsetsZero // override any margins inc. safe area
}
</code></pre>

(swift 4.2):

<pre><code>override var layoutMargins: UIEdgeInsets { get { return .zero } set { } }
</code></pre>

If you don't want to override the property, or need to set it conditionally, keep reading.

<hr>

In addition to the <code>layoutMargins</code> property, Apple has added a property to your cell that will prevent it from inheriting your Table View's margin settings. When this property is set, your cells are allowed to configure their own margins independently of the table view. Think of it as an override.

This property is called <code>preservesSuperviewLayoutMargins</code>, and setting it to <code>NO</code> will allow the cell's <code>layoutMargin</code> setting to override whatever <code>layoutMargin</code> is set on your TableView. It both saves time (you don't have to modify the Table View's settings), and is more concise. Please refer to Mike Abdullah's answer for a detailed explanation.

NOTE: what follows is a clean implementation for a cell-level margin setting, as expressed in Mike Abdullah's answer. Setting your cell's <code>preservesSuperviewLayoutMargins=NO</code> will ensure that your Table View does not override the cell settings. If you actually want your entire table view to have consistent margins, please adjust your code accordingly.

Setup your cell margins:

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

 // Prevent the cell from inheriting the Table View's margin settings
 if ([cell respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) {
 [cell setPreservesSuperviewLayoutMargins:NO];
 }

 // Explictly set your cell's layout margins
 if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
 [cell setLayoutMargins:UIEdgeInsetsZero];
 }
}
</code></pre>

Swift 4:

<pre><code>func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
 // Remove seperator inset
 if cell.responds(to: #selector(setter: UITableViewCell.separatorInset)) {
 cell.separatorInset = .zero
 }
 // Prevent the cell from inheriting the Table View's margin settings
 if cell.responds(to: #selector(setter: UITableViewCell.preservesSuperviewLayoutMargins)) {
 cell.preservesSuperviewLayoutMargins = false
 }
 // Explictly set your cell's layout margins
 if cell.responds(to: #selector(setter: UITableViewCell.layoutMargins)) {
 cell.layoutMargins = .zero
 }
}
</code></pre>

Setting the <code>preservesSuperviewLayoutMargins</code> property on your cell to NO should prevent your table view from overriding your cell margins. In some cases, it seems to not function properly.

If all fails, you may brute-force your Table View margins:

<pre><code>-(void)viewDidLayoutSubviews
{
 [super viewDidLayoutSubviews];

 // Force your tableview margins (this may be a bad idea)
 if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
 [self.tableView setSeparatorInset:UIEdgeInsetsZero];
 }

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

Swift 4:

<pre><code>func viewDidLayoutSubviews() {
 super.viewDidLayoutSubviews()
 // Force your tableview margins (this may be a bad idea)
 if tableView.responds(to: #selector(setter: UITableView.separatorInset)) {
 tableView.separatorInset = .zero
 }
 if tableView.responds(to: #selector(setter: UITableView.layoutMargins)) {
 tableView.layoutMargins = .zero
 }
}
</code></pre>

...and there you go! This should work on iOS 7 and 8.

<hr>

EDIT: Mohamed Saleh brought to my attention a possible change in iOS 9. You may need to set the Table View's <code>cellLayoutMarginsFollowReadableWidth</code> to <code>NO</code> if you want to customize insets or margins. Your mileage may vary, this is not documented very well.

This property only exists in iOS 9 so be sure to check before setting.

<pre><code>if([myTableView respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
{
 myTableView.cellLayoutMarginsFollowReadableWidth = NO;
} 
</code></pre>

Swift 4:

<pre><code>if myTableView.responds(to: #selector(setter: self.cellLayoutMarginsFollowReadableWidth)) {
 myTableView.cellLayoutMarginsFollowReadableWidth = false
}
</code></pre>

(above code from <a href="https://stackoverflow.com/questions/25770119/ios-8-uitableview-separator-inset-0-not-working/32860532#32860532">iOS 8 UITableView separator inset 0 not working</a>)

EDIT: Here's a pure Interface Builder approach:

<a href="https://i.stack.imgur.com/QLjGB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QLjGB.png" alt="TableViewAttributesInspector"></a>
<a href="https://i.stack.imgur.com/pbgBU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/pbgBU.png" alt="TableViewCellSizeInspector"></a>

NOTE: iOS 11 changes &amp; simplifies much of this behavior, an update will be forthcoming...

blocks|key|660021|text|至于cdstamper建议的是什么，而不是表视图，在单元格的layoutSubview方法中添加下面的行对我有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660022|-+(void)layoutSubviews+
{
++++[super+layoutSubviews];

++++if+([self+respondsToSelector:@selector(setSeparatorInset:)])
++++++++++++++++[self+setSeparatorInset:UIEdgeInsetsZero];

++++++++if+([self+respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)])
++++++++{
++++++++++++[self+setPreservesSuperviewLayoutMargins:NO];;
++++++++}

++++++++if+([self+respondsToSelector:@selector(setLayoutMargins:)])+
++++++++{
++++++++++++[self+setLayoutMargins:UIEdgeInsetsZero];
++++++++}
}|code-block|syntax|javascript|660023|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|$]]

As to what cdstamper suggested instead of the table view, adding below lines in the cell's layoutSubview method works for me.

<pre><code>- (void)layoutSubviews 
{
 [super layoutSubviews];

 if ([self respondsToSelector:@selector(setSeparatorInset:)])
 [self setSeparatorInset:UIEdgeInsetsZero];

 if ([self respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)])
 {
 [self setPreservesSuperviewLayoutMargins:NO];;
 }

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

blocks|key|405440|text|斯威夫特|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405441|override+func+viewDidLoad()+{
++++super.viewDidLoad()

++++if+self.tableView.respondsToSelector("setSeparatorInset:")+{
++++++++self.tableView.separatorInset+=+UIEdgeInsetsZero
++++}
++++if+self.tableView.respondsToSelector("setLayoutMargins:")+{
++++++++self.tableView.layoutMargins+=+UIEdgeInsetsZero
++++}

++++self.tableView.layoutIfNeeded()++++++++++++//+<---+this+do+the+magic
}

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

++++if+cell.respondsToSelector("setSeparatorInset:")+{
++++++++cell.separatorInset+=+UIEdgeInsetsZero
++++}
++++if+cell.respondsToSelector("setLayoutMargins:")+{
++++++++cell.layoutMargins+=+UIEdgeInsetsZero
++++}

++++return+cell
}|code-block|syntax|javascript|405442|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|$]]

Swift:

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

 if self.tableView.respondsToSelector("setSeparatorInset:") {
 self.tableView.separatorInset = UIEdgeInsetsZero
 }
 if self.tableView.respondsToSelector("setLayoutMargins:") {
 self.tableView.layoutMargins = UIEdgeInsetsZero
 }

 self.tableView.layoutIfNeeded() // &lt;--- this do the magic
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -&gt; UITableViewCell {
 ...

 if cell.respondsToSelector("setSeparatorInset:") {
 cell.separatorInset = UIEdgeInsetsZero
 }
 if cell.respondsToSelector("setLayoutMargins:") {
 cell.layoutMargins = UIEdgeInsetsZero
 }

 return cell
}
</code></pre>

blocks|key|405474|text|使用下面的代码片段，避免IOS+8&+7中的UITableView出现不必要的填充问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405475|-(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+([cell+respondsToSelector:@selector(setLayoutMargins:)])
++++{
++++++++[cell+setLayoutMargins:UIEdgeInsetsZero];
++++}
}|code-block|syntax|javascript|405476|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|$]]

Use below code snippet avoid unwanted padding issue for UITableView in IOS 8 &amp; 7.

<pre><code>-(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 ([cell respondsToSelector:@selector(setLayoutMargins:)])
 {
 [cell setLayoutMargins:UIEdgeInsetsZero];
 }
}
</code></pre>

blocks|key|1644841|text|这是对我有用的代码，在Swift中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1644842|override+func+viewDidLoad()+
{
++++super.viewDidLoad()
++++...
++++if+tableView.respondsToSelector("setSeparatorInset:")+{
++++++++tableView.separatorInset+=+UIEdgeInsetsZero
++++}
}

func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,forRowAtIndexPath+indexPath:+NSIndexPath)
{
++++if+cell.respondsToSelector("setSeparatorInset:")+{
++++++++cell.separatorInset.left+=+CGFloat(0.0)
++++}
++++if+tableView.respondsToSelector("setLayoutMargins:")+{
++++++++tableView.layoutMargins+=+UIEdgeInsetsZero
++++}
++++if+cell.respondsToSelector("setLayoutMargins:")+{
++++++++cell.layoutMargins.left+=+CGFloat(0.0)
++++}
}|code-block|syntax|javascript|1644843|这在我看来是最干净的(目前而言)，因为所有的单元格/表视图边缘/边距调整都是在tableView:willDisplayCell:forRowAtIndexPath:方法中完成的，而没有将不必要的代码塞进tableView:cellForRowAtIndexPath:中。|offset|length|style|CODE|1644844|顺便说一下，我只设置单元格的左分隔符in+/layoutMargins，因为在本例中，我不想破坏我在单元格中设置的约束。|1644845|代码更新为SWIFT2.2+:|BOLD|1644846|+override+func+viewDidLoad()+{
+++super.viewDidLoad()+++++++

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

+override+func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,forRowAtIndexPath+indexPath:+NSIndexPath)+{
++++++++if+cell.respondsToSelector(Selector("setSeparatorInset:"))+{
++++++++++++cell.separatorInset.left+=+CGFloat(0.0)
++++++++}
++++++++if+tableView.respondsToSelector(Selector("setLayoutMargins:"))+{
++++++++++++tableView.layoutMargins+=+UIEdgeInsetsZero
++++++++}
++++++++if+cell.respondsToSelector(Selector("setLayoutMargins:"))+{
++++++++++++cell.layoutMargins.left+=+CGFloat(0.0)
++++++++}
++++}|1644847|entityMap^0|0|0|13|18|2U|W|0|0|0|F|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|X|8|@$I|Y|J|Z|K|L]|$I|10|J|11|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|12|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|13|8|@$I|14|J|15|K|Q]]|9|@]|A|$]]|$1|R|3|S|5|D|7|16|8|@]|9|@]|A|$E|F]]|$1|T|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|U|$]]

This is the code that's working for me, in Swift:

<pre><code>override func viewDidLoad() 
{
 super.viewDidLoad()
 ...
 if tableView.respondsToSelector("setSeparatorInset:") {
 tableView.separatorInset = UIEdgeInsetsZero
 }
}

func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell,forRowAtIndexPath indexPath: NSIndexPath)
{
 if cell.respondsToSelector("setSeparatorInset:") {
 cell.separatorInset.left = CGFloat(0.0)
 }
 if tableView.respondsToSelector("setLayoutMargins:") {
 tableView.layoutMargins = UIEdgeInsetsZero
 }
 if cell.respondsToSelector("setLayoutMargins:") {
 cell.layoutMargins.left = CGFloat(0.0)
 }
}
</code></pre>

This seems the cleanest to me (for now), as all the cell/tableView edge/margin adjustments are done in the <code>tableView:willDisplayCell:forRowAtIndexPath:</code> method, without cramming unneccessary code into <code>tableView:cellForRowAtIndexPath:</code>.

Btw, I'm only setting the cell's left separatorInset/layoutMargins, because in this case I don't want to screw up my constraints that I have set up in my cell.

Code updated to Swift 2.2 :

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

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

 override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell,forRowAtIndexPath indexPath: NSIndexPath) {
 if cell.respondsToSelector(Selector("setSeparatorInset:")) {
 cell.separatorInset.left = CGFloat(0.0)
 }
 if tableView.respondsToSelector(Selector("setLayoutMargins:")) {
 tableView.layoutMargins = UIEdgeInsetsZero
 }
 if cell.respondsToSelector(Selector("setLayoutMargins:")) {
 cell.layoutMargins.left = CGFloat(0.0)
 }
 }
</code></pre>

blocks|key|661490|text|让我们花点时间去理解这个问题，然后再盲目地尝试解决它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661491|在调试器中快速查看会告诉您，分隔线是UITableViewCell的子视图。似乎单元本身对这些线路的布局承担了相当大的责任。|offset|length|style|CODE|661492|iOS+8引入了布局边距的概念。默认情况下，视图的布局边距在所有方面都是8pt，并且是从祖先视图继承的。|661493|据我们所知，当布局它的分隔线时，UITableViewCell选择尊重左边的布局边距，使用它来约束左插槽。|661494|将所有这些加在一起，以实现真正为零的期望，我们需要：|661495|将左侧布局边距设置为0|unordered-list-item|661496|停止覆盖以下内容的任何继承边距|661497|这样说，这是一项相当简单的任务：|661498|cell.layoutMargins+=+UIEdgeInsetsZero;
cell.preservesSuperviewLayoutMargins+=+NO;|code-block|syntax|javascript|661499|要注意的事情：|661500|这段代码只需要在每个单元格上运行一次(毕竟您只是在配置单元格的属性)，当您选择执行它时，没有什么特别之处。做你觉得最干净的事。|661501|遗憾的是，任何属性都无法在Interface中配置，但如果需要，可以为preservesSuperviewLayoutMargins指定用户定义的运行时属性。|661502|显然，如果您的应用程序也针对较早发布的操作系统，那么在iOS+8和更高版本上运行之前，您需要避免执行上述代码。|661503|与其设置preservesSuperviewLayoutMargins，您还可以配置祖先视图(如表)以使0留出空白，但这在本质上似乎更容易出错，因为您无法控制整个层次结构。|661504|如果只将左边框设置为0，而不设置其他空白，则可能会稍微干净一些。|661505|如果您希望在UITableView在普通样式表底部绘制的“额外”分隔符上设置0，我猜这也需要在表级别指定相同的设置(还没有尝试此设置！)|661506|entityMap^0|0|I|F|0|10|3|0|G|F|0|0|A|1|0|0|0|0|0|0|Z|V|0|0|4|V|1G|1|0|A|1|0|6|B|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1G|8|@$D|1H|E|1I|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1J|8|@$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1M|8|@$D|1N|E|1O|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1P|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|1Q|8|@$D|1R|E|1S|F|G]]|9|@]|A|$]]|$1|Q|3|R|5|P|7|1T|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1U|8|@]|9|@]|A|$]]|$1|U|3|V|5|W|7|1V|8|@]|9|@]|A|$X|Y]]|$1|Z|3|10|5|6|7|1W|8|@]|9|@]|A|$]]|$1|11|3|12|5|P|7|1X|8|@]|9|@]|A|$]]|$1|13|3|14|5|P|7|1Y|8|@$D|1Z|E|20|F|G]]|9|@]|A|$]]|$1|15|3|16|5|P|7|21|8|@]|9|@]|A|$]]|$1|17|3|18|5|P|7|22|8|@$D|23|E|24|F|G]|$D|25|E|26|F|G]]|9|@]|A|$]]|$1|19|3|1A|5|P|7|27|8|@$D|28|E|29|F|G]]|9|@]|A|$]]|$1|1B|3|1C|5|P|7|2A|8|@$D|2B|E|2C|F|G]]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|2D|8|@]|9|@]|A|$]]]|1E|$]]

Let's take a moment to understand the problem before blindly charging in to attempt to fix it.

A quick poke around in the debugger will tell you that separator lines are subviews of <code>UITableViewCell</code>. It seems that the cell itself takes a fair amount of responsibility for the layout of these lines.

iOS 8 introduces the concept of layout margins. By default, a view's layout margins are <code>8pt</code> on all sides, and they're inherited from ancestor views.

As best we can tell, when laying out out its separator line, <code>UITableViewCell</code> chooses to respect the left-hand layout margin, using it to constrain the left inset.

Putting all that together, to achieve the desired inset of truly zero, we need to:

<ul>
<li>Set the left layout margin to <code>0</code></li>
<li>Stop any inherited margins overriding that</li>
</ul>

Put like that, it's a pretty simple task to achieve:

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

Things to note:

<ul>
<li>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.</li>
<li>Sadly neither property is available to configure in Interface Builder, but you can specify a user-defined runtime attribute for <code>preservesSuperviewLayoutMargins</code> if desired.</li>
<li>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.</li>
<li>Rather than setting <code>preservesSuperviewLayoutMargins</code>, you can configure ancestor views (such as the table) to have <code>0</code> left margin too, but this seems inherently more error-prone as you don't control that entire hierarchy.</li>
<li>It would probably be slightly cleaner to set only the left margin to <code>0</code> and leave the others be.</li>
<li>If you want to have a 0 inset on the "extra" separators that <code>UITableView</code> 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!)</li>
</ul>

blocks|key|660096|text|与其每次单元格滚动时更新preservesSuperviewLayoutMargins和layoutMargins+(使用willDisplayCell)，不如在cellForRowAtIndexPath:中进行一次|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|660097|override+func+tableView(tableView:+UITableView,+cellForRowAtIndexPath+indexPath:+NSIndexPath)+->+UITableViewCell+{

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

++++cell.preservesSuperviewLayoutMargins+=+false
++++cell.layoutMargins+=+UIEdgeInsetsZero

++++return+cell

}|code-block|syntax|javascript|660098|entityMap^0|C|V|18|D|1P|F|29|M|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]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|L|$]]

Instead of updating <code>preservesSuperviewLayoutMargins</code> and <code>layoutMargins</code> every time the cell scrolls in (using <code>willDisplayCell</code>), I'd suggest to do it once in <code>cellForRowAtIndexPath:</code>:

<pre><code>override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -&gt; UITableViewCell {

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

 cell.preservesSuperviewLayoutMargins = false
 cell.layoutMargins = UIEdgeInsetsZero

 return cell

}
</code></pre>

blocks|key|660126|text|iOS在单元格和表视图上引入了layoutMargins属性.|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|660127|此属性在iOS+7.0中不可用，因此您需要确保在分配它之前检查它！|660128|然而，苹果在你的手机上添加了一个名为preservesSuperviewLayoutMargins的属性，这将阻止它继承表视图的边距设置。这样，单元格就可以独立于表视图配置它们自己的边距。把它想象成一种覆盖。|660129|此属性称为“preservesSuperviewLayoutMargins”，将其设置为“否”可以允许您使用自己的单元格的layoutMargin设置覆盖表视图的layoutMargin设置。这既节省了时间(，您不必修改表视图的设置)，而且更简洁。有关详细解释，请参阅迈克·阿卜杜拉的答复。|660130|注意:正如Mike的答案所示，这是正确的、不那么混乱的实现；设置单元格的preservesSuperviewLayoutMargins=NO将确保表视图不会覆盖单元格设置。|660131|第一步-设置单元格边距：|660132|/*
++++Tells+the+delegate+that+the+table+view+is+about+to+draw+a+cell+for+a+particular+row.
*/
override+func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,
++++forRowAtIndexPath+indexPath:+NSIndexPath)
{
++++//+Remove+separator+inset
++++if+cell.respondsToSelector("setSeparatorInset:")+{
++++++++cell.separatorInset+=+UIEdgeInsetsZero
++++}

++++//+Prevent+the+cell+from+inheriting+the+Table+View's+margin+settings
++++if+cell.respondsToSelector("setPreservesSuperviewLayoutMargins:")+{
++++++++cell.preservesSuperviewLayoutMargins+=+false
++++}

++++//+Explictly+set+your+cell's+layout+margins
++++if+cell.respondsToSelector("setLayoutMargins:")+{
++++++++cell.layoutMargins+=+UIEdgeInsetsZero
++++}
}|code-block|syntax|javascript|660133|将单元格上的preservesSuperviewLayoutMargins属性设置为无，则应阻止表视图覆盖单元格边距。在某些情况下，它似乎不能正常运作。|660134|第二步--如果所有操作都失败，您可能会蛮力--强制您的表视图边距：|660135|/*
++++Called+to+notify+the+view+controller+that+its+view+has+just+laid+out+its+subviews.
*/
override+func+viewDidLayoutSubviews()+{
++++super.viewDidLayoutSubviews()

++++//+Force+your+tableview+margins+(this+may+be+a+bad+idea)
++++if+self.tableView.respondsToSelector("setSeparatorInset:")+{
++++++++self.tableView.separatorInset+=+UIEdgeInsetsZero
++++}

++++if+self.tableView.respondsToSelector("setLayoutMargins:")+{
++++++++self.tableView.layoutMargins+=+UIEdgeInsetsZero
++++}
}|660136|...and，给你！这应该适用于iOS+8和iOS+7。|660137|注意:使用iOS+8.1和7.1进行测试，在我的例子中，我只需要使用这个解释的第一步。|660138|只有在呈现的单元格下面有未填充的单元格时，才需要第二步。如果表大于表模型中的行数。不执行第二步将导致不同的分隔符偏移。|660139|entityMap^0|0|V|0|0|I|V|1E|2|0|2W|C|0|0|0|C|0|0|17|2|0|0|X|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1B|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|1C|8|@$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1H|8|@$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|1K|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|R|7|1O|8|@]|D|@]|E|$S|T]]|$1|U|3|V|5|6|7|1P|8|@$9|1Q|A|1R|B|C]]|D|@]|E|$]]|$1|W|3|X|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|R|7|1V|8|@]|D|@]|E|$S|T]]|$1|10|3|11|5|6|7|1W|8|@]|D|@]|E|$]]|$1|12|3|13|5|6|7|1X|8|@]|D|@]|E|$]]|$1|14|3|15|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|16|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]]|17|$]]

iOS introduces the layoutMargins property on cells AND table views.

This property isn't available in iOS 7.0 so you need to make sure you check before assigning it!

However, Apple has added a property called preservesSuperviewLayoutMargins to your cell that will prevent it from inheriting your Table View's margin settings. This way, your cells can configure their own margins independently of the table view. Think of it as an override.

This property is called preservesSuperviewLayoutMargins, and setting it to NO can allow you to override your Table View's layoutMargin settings with your own cell's layoutMargin setting. It both saves time (you don't have to modify the Table View's settings), and is more concise. Please refer to Mike Abdullah's answer for a detailed explanation.

NOTE: this is the proper, less messy implementation, as expressed in Mike Abdullah's answer; setting your cell's preservesSuperviewLayoutMargins=NO will ensure that your Table View does not override the cell settings.

First step - Setup your cell margins:

<pre><code>/*
 Tells the delegate that the table view is about to draw a cell for a particular row.
*/
override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell,
 forRowAtIndexPath indexPath: NSIndexPath)
{
 // Remove separator inset
 if cell.respondsToSelector("setSeparatorInset:") {
 cell.separatorInset = UIEdgeInsetsZero
 }

 // Prevent the cell from inheriting the Table View's margin settings
 if cell.respondsToSelector("setPreservesSuperviewLayoutMargins:") {
 cell.preservesSuperviewLayoutMargins = false
 }

 // Explictly set your cell's layout margins
 if cell.respondsToSelector("setLayoutMargins:") {
 cell.layoutMargins = UIEdgeInsetsZero
 }
}
</code></pre>

Setting the preservesSuperviewLayoutMargins property on your cell to NO should prevent your table view from overriding your cell margins. In some cases, it seems not to function properly.

Second step - Only if all fails, you may brute-force your Table View margins:

<pre><code>/*
 Called to notify the view controller that its view has just laid out its subviews.
*/
override func viewDidLayoutSubviews() {
 super.viewDidLayoutSubviews()

 // Force your tableview margins (this may be a bad idea)
 if self.tableView.respondsToSelector("setSeparatorInset:") {
 self.tableView.separatorInset = UIEdgeInsetsZero
 }

 if self.tableView.respondsToSelector("setLayoutMargins:") {
 self.tableView.layoutMargins = UIEdgeInsetsZero
 }
}
</code></pre>

...and there you go! This should work on iOS 8 as well as iOS 7.

Note: tested using iOS 8.1 and 7.1, in my case I only needed to use the first step of this explanation.

The Second Step is only required if you have unpopulated cell beneath the rendered cells, ie. if the table is larger than the number of rows in the table model. Not doing the second step would result in different separator offsets.

blocks|key|1644933|text|让我按照我的代码做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1644934|-(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];
++++}
}|code-block|syntax|javascript|1644935|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|$]]

let do as my code:

<pre><code>-(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];
 }
}
</code></pre>

blocks|key|1644948|text|我是通过这样做来做到的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1644949|tableView.separatorInset+=+UIEdgeInsetsZero;
tableView.layoutMargins+=+UIEdgeInsetsZero;
cell.layoutMargins+=+UIEdgeInsetsZero;|code-block|syntax|javascript|1644950|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|$]]

I made it work by doing this:

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

blocks|key|405711|text|您可以在应用程序启动时(在加载UI之前)使用UIAppearance一次将其设置为默认全局设置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405712|//+iOS+7:
[[UITableView+appearance]+setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[[UITableView+appearance]+setSeparatorInset:UIEdgeInsetsZero];

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

//+iOS+8:
if+([UITableView+instancesRespondToSelector:@selector(setLayoutMargins:)])+{

++++[[UITableView+appearance]+setLayoutMargins:UIEdgeInsetsZero];
++++[[UITableViewCell+appearance]+setLayoutMargins:UIEdgeInsetsZero];
++++[[UITableViewCell+appearance]+setPreservesSuperviewLayoutMargins:NO];

}|code-block|syntax|javascript|405713|这样，您就可以保持UIViewController代码的整洁，并且可以随时重写它。|405714|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can use UIAppearance once, at your application startup (before UI is loaded), to set it as default global settings:

<pre><code>// iOS 7:
[[UITableView appearance] setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[[UITableView appearance] setSeparatorInset:UIEdgeInsetsZero];

[[UITableViewCell appearance] setSeparatorInset:UIEdgeInsetsZero];

// iOS 8:
if ([UITableView instancesRespondToSelector:@selector(setLayoutMargins:)]) {

 [[UITableView appearance] setLayoutMargins:UIEdgeInsetsZero];
 [[UITableViewCell appearance] setLayoutMargins:UIEdgeInsetsZero];
 [[UITableViewCell appearance] setPreservesSuperviewLayoutMargins:NO];

}
</code></pre>

This way, you keep your UIViewController's code clean and can always override it if you want.

blocks|key|405728|text|我浏览了所有这些精彩的答案，并意识到它们中的大多数并不适用于iOS+8，也不工作，但分隔符在动画期间更改大小，导致不必要的闪烁。这就是我在创建窗口之前在应用程序委托中所做的事情：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405729|[[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];
}|code-block|syntax|javascript|405730|这就是我在我的UITableViewController中添加的内容：|405731|-(void)viewDidLayoutSubviews
{
++++[super+viewDidLayoutSubviews];

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

++++if+([self.tableView+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++[self.tableView+setLayoutMargins:UIEdgeInsetsZero];
++++}
}|405732|我不需要再加任何东西了。感谢每一个提供关键部分的人。|405733|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I went through all these wonderful answers and realized most of them do not work with iOS 8, or do work but the separator changes size during animation causing unwanted flashing. This is what I ended up doing in my app delegate before creating the window:

<pre><code>[[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];
}
</code></pre>

And this is what I added to my UITableViewController:

<pre><code>-(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>

I didn't need to add anything else. Thanks to everyone who provided the crucial bits.

blocks|key|1645108|text|-(UITableViewCell+*)tableView:(UITableView+*)tableView+cellForRowAtIndexPath:(NSIndexPath+*)indexPath+{
++++++++//+...+Get+the+cell
++++++++cell.separatorInset+=+UIEdgeInsetsMake(0.f,+20.f,+0.f,+[UIScreen+mainScreen].bounds.size.width+-+20);
++++++++//+others
++++++++return+cell;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1645109|对于要隐藏分隔符的任何特定单元格。|unstyled|1645110|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 // ... Get the cell
 cell.separatorInset = UIEdgeInsetsMake(0.f, 20.f, 0.f, [UIScreen mainScreen].bounds.size.width - 20);
 // others
 return cell;
}
</code></pre>

For any specific cell you want to hide the separator.

blocks|key|660186|text|Lukasz用Swift回答：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660187|++++//+iOS+7:
++++UITableView.appearance().separatorStyle+=+.SingleLine
++++UITableView.appearance().separatorInset+=+UIEdgeInsetsZero
++++UITableViewCell.appearance().separatorInset+=+UIEdgeInsetsZero

++++//+iOS+8:
++++if+UITableView.instancesRespondToSelector("setLayoutMargins:")+{
++++++++UITableView.appearance().layoutMargins+=+UIEdgeInsetsZero
++++++++UITableViewCell.appearance().layoutMargins+=+UIEdgeInsetsZero
++++++++UITableViewCell.appearance().preservesSuperviewLayoutMargins+=+false
++++}|code-block|syntax|javascript|660188|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|$]]

Lukasz answer in Swift:

<pre><code> // iOS 7:
 UITableView.appearance().separatorStyle = .SingleLine
 UITableView.appearance().separatorInset = UIEdgeInsetsZero
 UITableViewCell.appearance().separatorInset = UIEdgeInsetsZero

 // iOS 8:
 if UITableView.instancesRespondToSelector("setLayoutMargins:") {
 UITableView.appearance().layoutMargins = UIEdgeInsetsZero
 UITableViewCell.appearance().layoutMargins = UIEdgeInsetsZero
 UITableViewCell.appearance().preservesSuperviewLayoutMargins = false
 }
</code></pre>

blocks|key|405786|text|Swift中带有自定义UITableViewCell的iOS+8的简单解决方案|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|405787|override+func+awakeFromNib()+{
++++super.awakeFromNib()

++++self.layoutMargins+=+UIEdgeInsetsZero
++++self.separatorInset+=+UIEdgeInsetsZero
}|code-block|syntax|javascript|405788|通过这种方式，您只设置了一次layoutMargin和separatorInset，而不是像上面大多数答案所建议的那样，对每个willDisplayCell进行设置。|405789|如果您使用的是自定义UITableViewCell，这是正确的位置。否则，您应该在tableView:cellForRowAtIndexPath中这样做。|405790|只是另一个提示:您不需要设置preservesSuperviewLayoutMargins+=+false，因为默认值已经是NO！|405791|entityMap^0|0|5|R|5|B|F|0|0|E|C|R|E|1R|F|0|A|F|15|V|0|E|13|1Q|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]|$9|Y|A|Z|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|10|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|11|8|@$9|12|A|13|B|D]|$9|14|A|15|B|D]|$9|16|A|17|B|D]]|E|@]|F|$]]|$1|N|3|O|5|6|7|18|8|@$9|19|A|1A|B|D]|$9|1B|A|1C|B|D]]|E|@]|F|$]]|$1|P|3|Q|5|6|7|1D|8|@$9|1E|A|1F|B|D]|$9|1G|A|1H|B|D]]|E|@]|F|$]]|$1|R|3|-4|5|6|7|1I|8|@]|E|@]|F|$]]]|S|$]]

Simple solution in Swift for iOS 8 with a custom <code>UITableViewCell</code>

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

 self.layoutMargins = UIEdgeInsetsZero
 self.separatorInset = UIEdgeInsetsZero
}
</code></pre>

In this way you are setting <code>layoutMargin</code> and <code>separatorInset</code> just one time instead of doing it for each <code>willDisplayCell</code> as most of the above answers suggest. 

If you are using a custom <code>UITableViewCell</code> this is the correct place to do it. 
Otherwise you should do it in <code>tableView:cellForRowAtIndexPath</code>.

Just another hint: you don't need to set <code>preservesSuperviewLayoutMargins = false</code> because default value is already <code>NO</code>!

blocks|key|660197|text|以比投票最多的答案更紧凑的方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660198|-+(void)tableView:(UITableView+*)tableView+willDisplayCell:(UITableViewCell+*)cell+forRowAtIndexPath:(NSIndexPath+*)indexPath+{

++++if+([cell+respondsToSelector:@selector(setSeparatorInset:)]+&&+[cell+respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]+&&+[cell+respondsToSelector:@selector(setLayoutMargins:)])+{
+++++++++[cell+setSeparatorInset:UIEdgeInsetsZero];
+++++++++[cell+setPreservesSuperviewLayoutMargins:NO];
+++++++++[cell+setLayoutMargins:UIEdgeInsetsZero];
++++}|code-block|syntax|javascript|660199|}|660200|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In a more compact way than the most voted answer...

<pre><code>- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {

 if ([cell respondsToSelector:@selector(setSeparatorInset:)] &amp;&amp; [cell respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)] &amp;&amp; [cell respondsToSelector:@selector(setLayoutMargins:)]) {
 [cell setSeparatorInset:UIEdgeInsetsZero];
 [cell setPreservesSuperviewLayoutMargins:NO];
 [cell setLayoutMargins:UIEdgeInsetsZero];
 }
</code></pre>

}

blocks|key|661688|text|在iOS8中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661689|将其添加到我的UITableViewCell子类中：|661690|-+(UIEdgeInsets)layoutMargins+{
++++return+UIEdgeInsetsZero;
}|code-block|syntax|javascript|661691|"tableView:cellForRowAtIndexPath“或"tableView:willDisplayCell"：|661692|[editCell+setSeparatorInset:UIEdgeInsetsZero];|661693|为我工作过。|661694|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

In iOS8:

Adding this to my UITableViewCell Subclass: 

<pre><code>- (UIEdgeInsets)layoutMargins {
 return UIEdgeInsetsZero;
}
</code></pre>

and this to "tableView:cellForRowAtIndexPath" or "tableView:willDisplayCell":

<pre><code>[editCell setSeparatorInset:UIEdgeInsetsZero];
</code></pre>

WORKED for me.

blocks|key|1645194|text|我对上述任何一种解决方案都没有任何实际的运气。我用NIB文件作为表格单元格。我通过添加一个高度为1的标签来“修正”这个问题。我将标签的背景更改为黑色，将标签固定在笔尖的底部，然后将其余内容的底部固定在添加的标签上。现在我的牢房底部有一条黑色的边框。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645195|对我来说，这感觉更像是一次黑客攻击，但确实有效。|1645196|我唯一的选择就是完全取消边界。我还在决定我是否会这么做。|1645197|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I didn't have any real luck with any of the solutions above. I'm using NIB files for my tables cells. I "fixed" this by adding a label with a height of 1. I changed the background of the label to black, pinned the label to the bottom of the nib, and then pinned the bottom of the rest of my contents to the added label. Now I have a black border running along the bottom of my cells.

To me, this feels like more of a hack, but it does work.

My only other choice was to just eliminate the border completely. I'm still deciding whether I'll just go with that.

blocks|key|1645225|text|iOS+8及更高版本。Swift+2.0及更高版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645226|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
++++}
}|code-block|syntax|javascript|1645227|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|$]]

iOS 8 and later. Swift 2.0 and later:

<pre><code>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
 }
}
</code></pre>

blocks|key|405867|text|在第三层看到答案后，我试着找出在TableView和TableViewCell之间设置分隔符的关系，并做了一些测试。以下是我的结论：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405868|我们可以考虑将单元格的分隔符设置为零必须分两步移动分隔符:第一步是将单元格的separatorinset设置为零。第二步是将单元格的边缘布局设置为零。|ordered-list-item|offset|length|style|BOLD|405869|设置TableView的separatorinset和marginlayout可以影响单元格的separatorinset.但是，通过测试，我发现TableView的separatorinset似乎毫无用处，TableView的marginlayout实际上可以影响单元格的marginlayout.|405870|设置单元格的PreservesSuperviewLayoutMargins+=+false，可以切断TableView对单元格的PreservesSuperviewLayoutMargins效应。|405871|解决办法之一是：
func+tableView(tableView:+UITableView，cellForRowAtIndexPath+indexPath:+NSIndexPath)+->+UITableViewCell+{+var+cell+=+UITableViewCell()+cell.preservesSuperviewLayoutMargins+=+false+cell.separatorInset+=+UIEdgeInsetsZero+cell.layoutMargins+=+UIEdgeInsetsZero返回单元}|405872|entityMap^0|0|12|E|1U|4|0|C|E|R|C|1B|E|2B|E|36|C|3T|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@$E|S|F|T|G|H]|$E|U|F|V|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|W|8|@$E|X|F|Y|G|H]|$E|Z|F|10|G|H]|$E|11|F|12|G|H]|$E|13|F|14|G|H]|$E|15|F|16|G|H]|$E|17|F|18|G|H]]|9|@]|A|$]]|$1|K|3|L|5|D|7|19|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|1A|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|P|$]]

After having seen the answers at floor 3, I tried to figure out what the relationship of setting up the separator between TableView &amp; TableViewCell and did some test. Here are my conclusions:

<ol>
<li>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.</li>
<li>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.</li>
<li>set Cell's PreservesSuperviewLayoutMargins = false, can cut off TableView's marginlayout effect on Cells.</li>
<li>one of the solutions: 

<pre><code>func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -&gt; UITableViewCell {
 var cell = UITableViewCell()

 cell.preservesSuperviewLayoutMargins = false
 cell.separatorInset = UIEdgeInsetsZero
 cell.layoutMargins = UIEdgeInsetsZero

 return cell
}
</code></pre></li>
</ol>

blocks|key|1645285|text|添加这段代码片段，在Swift中简单优雅，在iOS8中为我工作:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645286|++++//+tableview+single+line
func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,+forRowAtIndexPath+indexPath:+NSIndexPath)+{
++++cell.preservesSuperviewLayoutMargins+=+false
++++cell.layoutMargins+=+UIEdgeInsetsZero
}|code-block|syntax|javascript|1645287|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|$]]

Adding this snippet, simple elegant in Swift works for me in iOS8 :)

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

blocks|key|660296|text|这是我的解决方案。这适用于自定义单元格子类，只需将它们都添加到子类中即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660297|ordered-list-item|660298|(UIEdgeInsets)layoutMargins+{返回UIEdgeInsetsMake(0，10，0，10)；}|unordered-list-item|660299|660300|2.|660301|self.separatorInset+=+UIEdgeInsetsMake(0,+10,+0,+10);|code-block|syntax|javascript|660302|而且，您可以方便地自定义分离器的位置，而不必要求设计人员为您绘制一个。|660303|entityMap^0|0|1|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|C|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|X|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

This is my solution. This applies to the custom cell subclass, just add them both to the subclass.

<ol>
<li><pre><code>- (UIEdgeInsets)layoutMargins { 
 return UIEdgeInsetsMake(0, 10, 0, 10);
}
</code></pre></li>
</ol>

2.

<pre><code>self.separatorInset = UIEdgeInsetsMake(0, 10, 0, 10);
</code></pre>

And it is convenient that you can customize the position of the separator without asking your designer to draw one for you..........

blocks|key|405911|text|对于iOS+9，您需要添加：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405912|if([myTableView+respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
{
++++myTableView.cellLayoutMarginsFollowReadableWidth+=+NO;
}+|code-block|syntax|javascript|405913|有关更多细节，请参阅问题。|offset|length|405914|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/31538250/3151066^0|0|0|A|2|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

For iOS 9 you need to add:

<pre><code>if([myTableView respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
{
 myTableView.cellLayoutMarginsFollowReadableWidth = NO;
} 
</code></pre>

For more details please refer to <a href="https://stackoverflow.com/a/31538250/3151066">question</a>.

blocks|key|405916|text|这在iOS+8和iOS+9中非常适合我。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405917|OBJ-C|offset|length|style|BOLD|405918|+-+(UITableViewCell+*)tableView:(UITableView+*)tableView+cellForRowAtIndexPath:(NSIndexPath+*)indexPath++{+
++++++++if+([tableView+respondsToSelector:@selector(setSeparatorInset:)])
++++++++{
++++++++++++[tableView+setSeparatorInset:UIEdgeInsetsZero];
++++++++}

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

++++++++if+([cell+respondsToSelector:@selector(setLayoutMargins:)])
++++++++{
++++++++++++[cell+setLayoutMargins:UIEdgeInsetsZero];
++++++++}
+++++++++return+cell;
++++}|code-block|syntax|javascript|405919|entityMap^0|0|0|5|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|S|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This worked perfectly for me in iOS 8 and iOS 9.

For OBJ-C

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

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

 if ([cell respondsToSelector:@selector(setLayoutMargins:)])
 {
 [cell setLayoutMargins:UIEdgeInsetsZero];
 }
 return cell;
 }
</code></pre>

blocks|key|1645386|text|在@cdstamper的回答之后，一个更好的地方是layoutSubviews+of+UITableViewCell，在您的单元格文件中(我设置了1%25的间距，您可以设置为零)，所以只需要在这里设置代码就可以处理所有情况(旋转和其他)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645387|+-(void)layoutSubviews
++++{
++++++++[super+layoutSubviews];
++++++++if+([self+respondsToSelector:@selector(setSeparatorInset:)])+{
++++++++++++[self+setSeparatorInset:UIEdgeInsetsMake(0,self.bounds.size.width*0.01,0,self.bounds.size.width*0.01)];
++++++++}
++++++++if+([self+respondsToSelector:@selector(setLayoutMargins:)])+{
++++++++++++[self+setLayoutMargins:UIEdgeInsetsMake(0,self.bounds.size.width*0.01,0,self.bounds.size.width*0.01)];
++++++++}
++++}|code-block|syntax|javascript|1645388|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|$]]

following answer from @cdstamper, a better place is layoutSubviews of UITableViewCell, in your cell file(I set 1% spacing, you can set to zero), so need only to set code here to handle all situations(rotate and other):

<pre><code> -(void)layoutSubviews
 {
 [super layoutSubviews];
 if ([self respondsToSelector:@selector(setSeparatorInset:)]) {
 [self setSeparatorInset:UIEdgeInsetsMake(0,self.bounds.size.width*0.01,0,self.bounds.size.width*0.01)];
 }
 if ([self respondsToSelector:@selector(setLayoutMargins:)]) {
 [self setLayoutMargins:UIEdgeInsetsMake(0,self.bounds.size.width*0.01,0,self.bounds.size.width*0.01)];
 }
 }
</code></pre>

blocks|key|405995|text|这里有一个简单的方法来全局删除嵌入。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|405996|在UITableViewCell%2BExtensions.swift中|offset|length|style|CODE|405997|import+UIKit

extension+UITableViewCell+{

++override+public+var+layoutMargins:+UIEdgeInsets+{
++++get+{+return+UIEdgeInsetsZero+}
++++set+{+}
++}

}|code-block|syntax|javascript|405998|在AppDelegate+application:didFinishLaunchingWithOptions:中|405999|++UITableViewCell.appearance().separatorInset+=+UIEdgeInsetsZero|406000|您可能会想：(也可以在扩展中重写separatorInset，或者b)为layoutMargins设置外观代理。这两样都没用。尽管separatorInset被指示为属性，但试图将其重写为属性(或方法)会生成编译器错误。而为UITableViewCell的layoutMargins设置外观代理(或者，也为UITableView的layoutMargins和separatorInset设置外观代理)没有任何效果。|406001|entityMap^0|0|1|W|0|0|1|B|D|16|0|0|G|E|10|D|1T|E|34|F|3K|D|49|B|4L|D|4Z|E|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|Y|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$D|10|E|11|F|G]|$D|12|E|13|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|15|8|@$D|16|E|17|F|G]|$D|18|E|19|F|G]|$D|1A|E|1B|F|G]|$D|1C|E|1D|F|G]|$D|1E|E|1F|F|G]|$D|1G|E|1H|F|G]|$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]]|T|$]]

Here's an easy way to globally remove the inset.

In <code>UITableViewCell+Extensions.swift</code>:

<pre><code>import UIKit

extension UITableViewCell {

 override public var layoutMargins: UIEdgeInsets {
 get { return UIEdgeInsetsZero }
 set { }
 }

}
</code></pre>

In <code>AppDelegate</code> <code>application:didFinishLaunchingWithOptions:</code>:

<pre><code> UITableViewCell.appearance().separatorInset = UIEdgeInsetsZero
</code></pre>

You might think to a) also just override <code>separatorInset</code> in the extension, or b) set the appearance proxy for <code>layoutMargins</code>, instead. Neither will work. Even though <code>separatorInset</code> is indicated to be a property, attempting to override it as a property (or method) generates compiler errors. And setting the appearance proxy for <code>UITableViewCell</code>'s <code>layoutMargins</code> (or, for that matter, also setting the appearance proxies for <code>UITableView</code>'s <code>layoutMargins</code> and <code>separatorInset</code>) has no effect.

blocks|key|661791|text|XCode+7.1+iOS+7、8、9：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661792|只需将这两行放在TabelViewCell中：|661793|++++self.layoutMargins+=+UIEdgeInsetsZero;
++++self.preservesSuperviewLayoutMargins+=+false;|code-block|syntax|javascript|661794|对我来说很管用|661795|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

XCode 7.1 iOS 7, 8, 9:

just put these two lines in your TabelViewCell:

<pre><code> self.layoutMargins = UIEdgeInsetsZero;
 self.preservesSuperviewLayoutMargins = false;
</code></pre>

That worked for me

blocks|key|406021|text|我的解决方案是添加一个UIView作为单元格子视图的容器。然后将这个UIView约束(顶部、底部、尾部、前导)设置为0。所有不必要的物质都消失了。显示逻辑的图像|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|406022|entityMap|0|LINK|mutability|MUTABLE|url|http://i.stack.imgur.com/KEF50.png^0|21|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

My solution is adding an UIView as a container for the cell subviews. Then set this UIView constraints (top,bottom,trailing,leading) to 0 points. And all the unnecessary mass go away.<a href="http://i.stack.imgur.com/KEF50.png" rel="nofollow">the image showing the logic</a>

blocks|key|660354|text|对我来说，简单的台词做了这件事|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660355|cell.layoutMargins+=+UIEdgeInsetsZero|code-block|syntax|javascript|660356|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 me the simple line did the job

<pre><code>cell.layoutMargins = UIEdgeInsetsZero
</code></pre>

blocks|key|1645574|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645575|📷|atomic|offset|length|1645576|1645577|使用情节提要更改分隔符内置自定义0和右0，如果要将分隔符隐藏为None，请参见上面的图像|1645578|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/db352baaa462ea680d9b591f6ec629f7.png|imageAlt^0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@$E|U|F|V|1|W]]|A|$]]|$1|G|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

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

use storyboard to Change Separator inset Custom left 0 and right 0,
if you want to hide separator to None
see above image

blocks|key|406088|text|使用Swift+2.2|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|406089|UITableViewCell+extension+创建|CODE|406090|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
++++++++}
++++}
}+|code-block|syntax|javascript|406091|现在您可以在您的cellForRowAtIndex中使用|406092|-(void)tableView:(UITableView+*)tableView+willDisplayCell:(UITableViewCell+*)cell+forRowAtIndexPath:(NSIndexPath+*)indexPath
{
++++++++++++cell.removeMargins()//To+remove+seprator+inset+
}|406093|entityMap^0|2|9|0|0|P|Q|2|0|P|0|0|8|H|8|H|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|H]]|D|@]|E|$]]|$1|I|3|J|5|K|7|13|8|@]|D|@]|E|$L|M]]|$1|N|3|O|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|H]]|D|@]|E|$]]|$1|P|3|Q|5|K|7|19|8|@]|D|@]|E|$L|M]]|$1|R|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|S|$]]

With Swift 2.2

create <code>UITableViewCell extension</code>

<pre><code>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
 }
 }
} 
</code></pre>

Now you can use in your <code>cellForRowAtIndex</code>

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

blocks|key|660411|text|在Swift中你可以用这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660412|++++cell.selectionStyle+=+UITableViewCellSelectionStyle.None
++++cell.preservesSuperviewLayoutMargins+=+false
++++cell.separatorInset+=+UIEdgeInsetsZero
++++cell.layoutMargins+=+UIEdgeInsetsZero|code-block|syntax|javascript|660413|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|$]]

In Swift you can use this

<pre><code> cell.selectionStyle = UITableViewCellSelectionStyle.None
 cell.preservesSuperviewLayoutMargins = false
 cell.separatorInset = UIEdgeInsetsZero
 cell.layoutMargins = UIEdgeInsetsZero
</code></pre>

blocks|key|661853|text|经过多次调查..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661854|这是完全控制这些东西的唯一方法(我可以找到)。|661855|充分控制每个单元格上的分隔符插入和布局边距。在willDisplayCell方法中对UITableviewDelegate执行此操作。|offset|length|style|CODE|661856|func+tableView(tableView:+UITableView,+willDisplayCell+cell:+UITableViewCell,+forRowAtIndexPath+indexPath:+NSIndexPath)+{
++++cell.layoutMargins+=+UIEdgeInsetsZero
++++cell.contentView.layoutMargins+=+UIEdgeInsetsMake(0,+10,+0,+10)
++++cell.separatorInset+=+UIEdgeInsetsMake(0,+0,+0,+0)
}|code-block|syntax|javascript|661857|单元格对象控制分隔符，contentView控制其他一切。如果分隔符嵌入空间以意外的颜色显示，则应解决此问题：|661858|cell.backgroundColor+=+cell.contentView.backgroundColor|661859|entityMap^0|0|0|N|F|16|J|0|0|B|B|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@$F|X|G|Y|H|I]|$F|Z|G|10|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|11|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|12|8|@$F|13|G|14|H|I]]|9|@]|A|$]]|$1|Q|3|R|5|L|7|15|8|@]|9|@]|A|$M|N]]|$1|S|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|T|$]]

<h2>After much investigation...</h2>
Here's the only way to fully control this stuff (that I could find)
To fully control both separator insets and layout margins on each cell. Do this in the <code>willDisplayCell</code> method on your <code>UITableviewDelegate</code>.
<pre><code>func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
 cell.layoutMargins = UIEdgeInsetsZero
 cell.contentView.layoutMargins = UIEdgeInsetsMake(0, 10, 0, 10)
 cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)
}
</code></pre>
The cell object controls the separator, and the <code>contentView</code> controls everything else. If your separator inset spaces are showing up in an unexpected color this should solve it:
<pre><code>cell.backgroundColor = cell.contentView.backgroundColor
</code></pre>

blocks|key|1645662|text|只需添加下面的代码即可解决此程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1645663|祝你好运!|1645664|-(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];
+++++++}

}|code-block|syntax|javascript|1645665|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Just add below code can solve this program. 

Good luck to you!

<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];
 }

}
</code></pre>

blocks|key|1645682|text|SWIFT3.0示例：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1645683|func+tableView(_+tableView:+UITableView,+willDisplay+cell:+UITableViewCell,+forRowAt+indexPath:+IndexPath)+{
++++//+removing+seperator+inset
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.separatorInset))+{
++++++++cell.separatorInset+=+.zero
++++}
++++//+prevent+the+cell+from+inheriting+the+tableView's+margin+settings
++++if+cell.responds(to:+#selector(setter:+UIView.preservesSuperviewLayoutMargins))+{
++++++++cell.preservesSuperviewLayoutMargins+=+false
++++}
++++//+explicitly+setting+cell's+layout+margins
++++if+cell.responds(to:+#selector(setter:+UITableViewCell.layoutMargins))+{
++++++++cell.layoutMargins+=+.zero
++++}
}|code-block|syntax|javascript|1645684|entityMap^0|0|B|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|$]]

Swift 3.0 example:

<pre><code>func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
 // removing seperator inset
 if cell.responds(to: #selector(setter: UITableViewCell.separatorInset)) {
 cell.separatorInset = .zero
 }
 // prevent the cell from inheriting the tableView's margin settings
 if cell.responds(to: #selector(setter: UIView.preservesSuperviewLayoutMargins)) {
 cell.preservesSuperviewLayoutMargins = false
 }
 // explicitly setting cell's layout margins
 if cell.responds(to: #selector(setter: UITableViewCell.layoutMargins)) {
 cell.layoutMargins = .zero
 }
}
</code></pre>

blocks|key|660484|text|简单地将这两行放在cellForRowAtIndexPath方法中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|660485|如果您想要所有分隔线都从零单元开始，separator+:UIEdgeInsetsZero；cell+setLayoutMargins:UIEdgeInsetsZero；|unordered-list-item|660486|如果要指定分隔线，则从零开始，假设下面是最后一行从零开始|660487|if+(indexPath.row+==+array.count-1)+
{
+++[cell+setSeparatorInset:UIEdgeInsetsZero];
+++[cell+setLayoutMargins:UIEdgeInsetsZero];
}
else
+++tblView.separatorInset=UIEdgeInsetsMake(0,+10,+0,+0);|code-block|syntax|javascript|660488|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|O|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|Q|8|@]|9|@]|A|$J|K]]|$1|L|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|M|$]]

simply put this two lines in cellForRowAtIndexPath method

<ul>
<li>if you want to all separator lines are start from zero
[cell setSeparatorInset:UIEdgeInsetsZero];
[cell setLayoutMargins:UIEdgeInsetsZero];</li>
</ul>

if you want to Specific separator line are start from zero suppose here is last line is start from zero 

<pre><code>if (indexPath.row == array.count-1) 
{
 [cell setSeparatorInset:UIEdgeInsetsZero];
 [cell setLayoutMargins:UIEdgeInsetsZero];
}
else
 tblView.separatorInset=UIEdgeInsetsMake(0, 10, 0, 0);
</code></pre>

blocks|key|661905|text|对我来说，除了这个解决办法之外，没有一种方法奏效(SWIFT3.0)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|661906|extension+UIColor+{
++++static+func+colorWith(hex:String,+alpha:+CGFloat)+->+UIColor+{
++++++++var+cString+=+hex.trimmingCharacters(in:+.whitespacesAndNewlines).uppercased()

++++++++if+cString.hasPrefix("#")+{
++++++++++++cString.remove(at:+cString.startIndex)
++++++++}

++++++++if+cString.characters.count+!=+6+{
++++++++++++return+UIColor.gray
++++++++}

++++++++var+rgbValue:UInt32+=+0
++++++++Scanner(string:+cString).scanHexInt32(&rgbValue)

++++++++return+UIColor(red:+++CGFloat((rgbValue+&+0xFF0000)+>>+16)+/+255.0,
+++++++++++++++++++++++green:+CGFloat((rgbValue+&+0x00FF00)+>>+8)++/+255.0,
+++++++++++++++++++++++blue:++CGFloat(+rgbValue+&+0x0000FF)++++++++/+255.0,
+++++++++++++++++++++++alpha:+alpha)
++++}
}

func+tableView(_+tableView:+UITableView,+cellForRowAt+indexPath:+IndexPath)+->+UITableViewCell+{
++++let+cell+=+tableView.dequeueReusableCell(withIdentifier:+cellReuseIdendifier,+for:+indexPath)

++++cell.backgroundColor+=+UIColor.colorWith(hex:+"c8c7cc",+alpha:+1)+//+same+color+of+line+separator

++++return+cell
}|code-block|syntax|javascript|661907|entityMap^0|P|8|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 me none has worked except this workaround (Swift 3.0):

<pre><code>extension UIColor {
 static func colorWith(hex:String, alpha: CGFloat) -&gt; UIColor {
 var cString = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()

 if cString.hasPrefix("#") {
 cString.remove(at: cString.startIndex)
 }

 if cString.characters.count != 6 {
 return UIColor.gray
 }

 var rgbValue:UInt32 = 0
 Scanner(string: cString).scanHexInt32(&amp;rgbValue)

 return UIColor(red: CGFloat((rgbValue &amp; 0xFF0000) &gt;&gt; 16) / 255.0,
 green: CGFloat((rgbValue &amp; 0x00FF00) &gt;&gt; 8) / 255.0,
 blue: CGFloat( rgbValue &amp; 0x0000FF) / 255.0,
 alpha: alpha)
 }
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell {
 let cell = tableView.dequeueReusableCell(withIdentifier: cellReuseIdendifier, for: indexPath)

 cell.backgroundColor = UIColor.colorWith(hex: "c8c7cc", alpha: 1) // same color of line separator

 return cell
}
</code></pre>

blocks|key|661915|text|只需重写"cellForRowAtIndexPath“并设置"cell.preservesSuperviewLayoutMargins+=+false”和"cell.separatorInset+=+UIEdgeInsets.zero“和"cell.layoutMargins+=+UIEdgeInsets.zero”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661916|override+func+tableView(_+tableView:+UITableView,+cellForRowAt+indexPath:+IndexPath)+->+UITableViewCell+{

++++let+cell:+LayoutTableViewCell!+=+tableView.dequeueReusableCell(withIdentifier:+"LayoutCell")+as?+LayoutTableViewCell



++++let+currentLayout+=+OrderLayouts()[indexPath.row]

++++cell.NameLabel?.text+=+currentLayout.name
++++cell.DescrLabel?.text+=+currentLayout.descr

++++if(GlobalVariables.debug){

++++++++cell.DescrLabel?.text+=+"\(currentLayout.id)+\n+\(currentLayout.descr)"

++++}

++++cell.preservesSuperviewLayoutMargins+=+false
++++cell.separatorInset+=+UIEdgeInsets.zero
++++cell.layoutMargins+=+UIEdgeInsets.zero


++++return+cell

}|code-block|syntax|javascript|661917|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|$]]

Just override the "cellForRowAtIndexPath" and set "cell.preservesSuperviewLayoutMargins = false" and "cell.separatorInset = UIEdgeInsets.zero" and "cell.layoutMargins = UIEdgeInsets.zero"

<pre><code>override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell {

 let cell: LayoutTableViewCell! = tableView.dequeueReusableCell(withIdentifier: "LayoutCell") as? LayoutTableViewCell



 let currentLayout = OrderLayouts()[indexPath.row]

 cell.NameLabel?.text = currentLayout.name
 cell.DescrLabel?.text = currentLayout.descr

 if(GlobalVariables.debug){

 cell.DescrLabel?.text = "\(currentLayout.id) \n \(currentLayout.descr)"

 }

 cell.preservesSuperviewLayoutMargins = false
 cell.separatorInset = UIEdgeInsets.zero
 cell.layoutMargins = UIEdgeInsets.zero


 return cell

}
</code></pre>

I have an app where the <code>UITableView</code>'s separator inset is set to custom values - Right <code>0</code>, Left <code>0</code>. This works perfectly in <code>iOS 7.x</code>, however in <code>iOS 8.0</code> I see that the separator inset is set to the default of <code>15</code> on the right. Even though in the xib files it set to <code>0</code>, it still shows up incorrectly.

How do I remove the <code>UITableViewCell</code> separator margins?

iOS 8 UITableView separator inset 0 not working

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个应用程序，UITableView的分隔符嵌入设置为自定义值--右0，左0。这在iOS 7.x中工作得很好，但在iOS 8.0中，我看到分隔符嵌入设置为右侧15的默认值。即使在设置为0的xib文件中，它仍然不正确地显示。如何删除UITableViewCell分隔符边距？

问iOS 8 UITableView分隔符inset 0不工作
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问iOS 8 UITableView分隔符inset 0不工作
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