iOS 8 UITableView separator inset 0 not working

Question

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

How do I remove the UITableViewCell separator margins?

Kropp

Have you tried setting the inset to 0.001 instead of 0? I remember having a similar problem where the edge inset would not react to 0 but did react to 0.001 (or something similar small). – Gustavo

I tried that and it did not work either.. – Kropp

Then I would suggest setting the separators color to [UIColor clearColor] and drawing your own separators. You are much more flexible that way. – Gustavo

I still can't believe that this is still not one of the UITableViewCellSeparatorStyle defaults. Even the accepted answer is a really dirty hack in my opinion. – Lederman

Answer 1

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)

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

(swift 4.2):

override var layoutMargins: UIEdgeInsets { get { return .zero } set { } }

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

---

In addition to the layoutMargins 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 preservesSuperviewLayoutMargins, and setting it to NO will allow the cell's layoutMargin setting to override whatever layoutMargin 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 preservesSuperviewLayoutMargins=NO 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:

-(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];
    }
}

Swift 4:

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
    }
}

Setting the preservesSuperviewLayoutMargins 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:

-(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];
    }
} 

Swift 4:

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
    }
}

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

---

EDIT: Mohamed Saleh brought to my attention a possible change in iOS 9. You may need to set the Table View's cellLayoutMarginsFollowReadableWidth to NO 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.

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

Swift 4:

if myTableView.responds(to: #selector(setter: self.cellLayoutMarginsFollowReadableWidth)) {
    myTableView.cellLayoutMarginsFollowReadableWidth = false
}

(above code from iOS 8 UITableView separator inset 0 not working)

EDIT: Here's a pure Interface Builder approach:

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

Spasm

For tableviews inside a UIPopoverController, I had to do both of these as shown above, instead of just in the willDisplayCell. – Odey

I also found that despite all the code above that I still had to add cell.preservesSuperviewLayoutMargins = NO per @bffmike's suggestion or after scrolling a ways the insets would appear. (wtf??) – Conny

What if we want to set the margin only for one type of cell in a grouped tableView? – Blow

You could try setting it in willDisplayCell and seeing if that actually works (you have a handle on the cell so it should be trivial). If it doesn't, we need to file a bug. Cell specific layout margins should be possible, IMO. – Spasm

This worked for me with the addition of cell.preservesSuperviewLayoutMargins in my data source method: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath – Piping

Shouldn't you also pass the call to super in viewDidLayoutSubviews? – Deutero

"Setup your cell margins" step using iOS 8.1 and Swift was enough for me to make it work. – Japonica

For the Swift version, working and tested on iOS 7 and 8, please see my answer below this post. – Japonica

[self.tableView setSeparatorInset:UIEdgeInsetsZero]; will make section title no inset in grouped tableView. – Benne

Same answer in swift in case if any one needed { if ( self.tableVIew .respondsToSelector("setSeparatorInset:") ){ self.tableVIew.separatorInset = UIEdgeInsetsZero } if ( self.tableVIew .respondsToSelector("setLayoutMargins:") ) { self.tableVIew.layoutMargins = UIEdgeInsetsZero }} – Situated

tableView.layoutMargins = UIEdgeInsetZero; trigers layout and dataSource methods being called immediately. So I prefer to add a method for customized cell, like - (UIEdgeInsets)layoutMargins { return UIEdgeInsetsZero; } @Japonica – Barta

Note: it did not work me on UITableViewCell descentants, only on the main class. – Testes

This worked for me: UIEdgeInsetsMake(0, CGRectGetWidth(self.bounds)/2.0, 0, CGRectGetWidth(self.bounds)/2.0). Taken from here – Ordway

And you can do this in storyboard: Size Inspector (cmd+alt+5) -> Layout Margins section. – Alida

Please add answer http://stackoverflow.com/a/32860532/1565971 this to your answer also , as iOS9 have different handling and that appears to me on iPad Only – Centurial

This works for me (applied on dynamic prototype cells): - Set the separator custom insets to 0 on the cell. - Set the Layout Margin of the cell to Explicit, and 0 for the left margin. No code involved. – Frustrated

It seems all you should need to do is set the separatorInset, but instead it does seem like you need to set both separatorInset and the layoutMargins as the answer. But what if you want to use the margins for auto-layout of the content of the cell? – Exerciser

Do you happen to have an update for this answer for iOS 11? It no longer works. – Blow

Answer 2

Arg!!! After playing around either doing this in your Cell subclass:

- (UIEdgeInsets)layoutMargins
{
    return UIEdgeInsetsZero;
}

or setting the cell.layoutMargins = UIEdgeInsetsZero; fixed it for me.

Kropp

the first solution in this answer worked for me, the 2nd one didn't work. – Turnpike

Don't just use cell.layoutMargins = UIEdgeInsetsZero; as it will crash on iOS 7.x. It better to check if the selector exists first before using it. See my solution below. – Melar

He is not setting cell.layoutMargins ... This solution works great when you already have custom cells. – Auscultation

This will work fine in iOS 7, as the method won't get called! You also need to set the table view's layoutMargins, though, or it won't work. – Spasm

overriding the accessor worked for me. but all the other solutions did not. even configuring the separatorInset in IB did not work. there's also a problem with table view background colors. this is really sick stuff. – Prasad

here is my observation (on iOS8): UITableViewController want's that solution. For TableViews inside UIViewController the accepted answer does the trick. – Leveloff

This deservers more up votes. It avoids all that OS specific code. – Matson

Overriding layoutMargins method is the most clean solution when using custom cells. – Gramineous

This only works if you've subclassed the cell, however. It also doesn't take into account the similar property on the Table View. – Spasm

Overriding layoutMargins method worked (iOS 8.3), setting property was not. – Carbonous

tableView.layoutMargins = UIEdgeInsetZero; trigers layout and dataSource methods being called immediately. So your solution is preferred. – Barta

Overriding layoutMargins did not work for me on Xcode 8.3.2 iOS 10.2.1 but setting self.separatorInset = UIEdgeInsetsZero in my init method worked. – Inapt

Answer 3

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 UITableViewCell. 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 8pt on all sides, and they're inherited from ancestor views.

As best we can tell, when laying out out its separator line, UITableViewCell 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:

• Set the left layout margin to 0
• Stop any inherited margins overriding that

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

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

Things to note:

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

Almeda

Thank you! This really is the more concise answer. Much better than overriding two methods and brute forcing it. – Lauryn

In iOS 8, for me, this wouldn't work without [self.tableView setSeparatorInset:UIEdgeInsetsMake(0, 0, 0, 0)]; – Rosecan

You have my vote, thanks for the clear explanation. I'll just mention that the TableView itself also has layoutMargins that may need to be set in addition to the separatorInset, in some cases. – Spasm

@Rosecan and @cdstamper Can you provide any evidence of this? All my explorations so far say that setting both layoutMargins and preservesSuperviewLayoutMargins on the cell is all that is required. Anything else feels like trusting in voodoo. – Almeda

No. I agree, it seems that setting preservesSuperviewLayoutMargins would prevent the cell from inheriting the table view settings; however, I have seen that fail at least once. – Spasm

OK. If you can provide some sort of test case, I'd be delighted to dig into it. – Almeda

No, it's not a form of voodoo @MikeAbdullah. In order for you to avoid the default separatorInset of a UITableViewCell in iOS 8, you have to set the set the UIEdgeInsets to zero on both the UITableView and the UITableViewCell. If you don't do both, you'll still have a left inset that is greater than zero. I have confirmed this multiple times. – Rosecan

@Rosecan Not according to my findings. Setting preservesSuperviewLayoutMargins to NO overrides that inherited margin – Almeda

Testing with iOS 8.1 in the simulator, setting layoutMargins and preservesSuperviewLayoutMargins on the cell alone is sufficient, even for the "extra" separators that the tableview draws on its own. More interestingly, the "extra" separators ignore layout margins even if I don't change those things; if I merely set separatorInset to UIEdgeInsetsZero then the cell separators are inset but the "extra" ones aren't. – Levitt

Ah, I hadn't considered "extra" separators, as I've been focusing on grouped style tables. Interesting to know, thanks, Kevin! – Almeda

preservesSuperviewLayoutMargins is NO by default. – Palmetto

@BlackFlam3 it isn't in my experience. Are you talking about UIView generally, or a specific kind of view? – Almeda

@Rosecan i will have to agree with Mike. I have tried every possible solution and it will not work. After spending one hour on the above simple and stupid problem, I finally created my own separator view inside the cell, which works. – Koreykorff

Answer 4

I believe this is the same question that I asked here: Remove SeparatorInset on iOS 8 UITableView for XCode 6 iPhone Simulator

In iOS 8, there is one new property for all the objects inherit from UIView. So, the solution to set the SeparatorInset 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".

@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

The solution:-

-(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];
   }
}

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

Melar

How can this approach be used if the deployment target is set to iOS 7 ? – Roseliaroselin

I put the code for tableView in viewDidLoad and are working fine. I think its not necessary to call them every time in willDisplayCell(). – Yellowstone

Answer 5

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

// 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];

}

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

Audley

Answer 6

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:

/*
    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
    }
}

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:

/*
    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
    }
}

...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.

Japonica

You don't need to check for selectors in the willDisplayCell method as the method itself is already iOS 8+ and will never be called from older versions. – Lederhosen

Answer 7

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

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

This will effectively make layoutMargins readonly, which in my case is fine.

Jennelljenner

Only this solution did work for me. And I did not need add additional code of lines in the methods. I did use custom cells. – Ellington

For static cell, except from overriding layoutMargins, you still need to change cell's separator style to "Custom Insets" and set left value to "0" in storyboard. – Elidaelidad

Answer 8

For iOS 9 you need to add:

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

For more details please refer to question.

Lazulite

it is funny to add some code for each version so that the initial appearance stays the same... – Teakwood

Answer 9

Swift 2.0 Extension

I just wanted to share an extension I made to remove the margins from the tableview cell separators.

extension UITableViewCell {
    func removeMargins() {

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

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

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

Used in context:

    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! CustomCell

    cell.removeMargins()
    return cell

Detoxify

Answer 10

Swift:

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
}

Statecraft

Answer 11

I made it work by doing this:

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

Pelkey

Answer 12

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

- (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];
        }
}

Splashdown

Answer 13

After much investigation...

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 willDisplayCell method on your UITableviewDelegate.

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)
}

The cell object controls the separator, and the contentView controls everything else. If your separator inset spaces are showing up in an unexpected color this should solve it:

cell.backgroundColor = cell.contentView.backgroundColor

Uncompromising

Answer 14

Swift 3.0 example:

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
    }
}

Unmoving

Answer 15

Simple solution in Swift for iOS 8 with a custom UITableViewCell

override func awakeFromNib() {
    super.awakeFromNib()

    self.layoutMargins = UIEdgeInsetsZero
    self.separatorInset = UIEdgeInsetsZero
}

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

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

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

Maggio

Answer 16

For me the simple line did the job

cell.layoutMargins = UIEdgeInsetsZero

Loveinidleness

called this in cellForRowAtIndexPath delegate method. Good answer :) – Erudition

Answer 17

Just add below code can solve this program.

Good luck to you!

-(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];
       }

}

Appositive

Answer 18

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

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)
    }
}

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

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 :

 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)
        }
    }

Citrine

What exactly is not working for you? Just tested this code out on the iPhone 5 simulator, with the iOS 8.1 SDK installed, and everything is as it was when I originally posted this answer. Code was compiled & run with Xcode 6.1.1. – Citrine

Answer 19

Lukasz answer in Swift:

    // 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
    }

Birt

Answer 20

Most answers are showing separator insets and layout margins being set over a variety of methods (i.e., viewDidLayoutSubviews, willDisplayCell, etc) for cells and tableviews, but I've found that just putting these in cellForRowAtIndexPath works great. Seems like the cleanest way.

// kill insets for iOS 8
if ([[UIDevice currentDevice].systemVersion floatValue] >= 8) {
    cell.preservesSuperviewLayoutMargins = NO;
    [cell setLayoutMargins:UIEdgeInsetsZero];
}
// iOS 7 and later
if ([cell respondsToSelector:@selector(setSeparatorInset:)])
    [cell setSeparatorInset:UIEdgeInsetsZero];

Conny

Answer 21

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

-(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];
    }
}

Elledge

Answer 22

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

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

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

    cell.preservesSuperviewLayoutMargins = false
    cell.layoutMargins = UIEdgeInsetsZero

    return cell

}

Heda

Answer 23

In iOS8:

Adding this to my UITableViewCell Subclass:

- (UIEdgeInsets)layoutMargins {
    return UIEdgeInsetsZero;
}

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

[editCell setSeparatorInset:UIEdgeInsetsZero];

WORKED for me.

Snippet

Answer 24

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

In UITableViewCell+Extensions.swift:

import UIKit

extension UITableViewCell {

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

}

In AppDelegate application:didFinishLaunchingWithOptions::

  UITableViewCell.appearance().separatorInset = UIEdgeInsetsZero

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

Moneyed

Answer 25

-(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;
}

For any specific cell you want to hide the separator.

Melton

Answer 26

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

1. 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.

2. 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.

3. set Cell's PreservesSuperviewLayoutMargins = false, can cut off TableView's marginlayout effect on Cells.

4. one of the solutions:

   func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
       var cell = UITableViewCell()
   
       cell.preservesSuperviewLayoutMargins = false
       cell.separatorInset = UIEdgeInsetsZero
       cell.layoutMargins = UIEdgeInsetsZero
   
       return cell
   }
   

Piscine

Answer 27

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

1. - (UIEdgeInsets)layoutMargins {    
       return UIEdgeInsetsMake(0, 10, 0, 10);
   }
   

2.

self.separatorInset = UIEdgeInsetsMake(0, 10, 0, 10);

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

Gratian

Answer 28

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

- (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];
    }

}

Hieroglyphic

Answer 29

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

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

Feudist

Answer 30

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

For OBJ-C

 - (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;
    }

Ammunition

Answer 31

let do as my 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];
    }
}

Shupe

Answer 32

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:

[[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];
}

And this is what I added to my UITableViewController:

-(void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

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

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

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

Diplomatist

Answer 33

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.

Downstage

Answer 34

iOS 8 and later. Swift 2.0 and later:

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
    }
}

Yellowthroat

Answer 35

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):

 -(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)];
        }
    }

Deviant

Answer 36

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.the image showing the logic

Progressionist

Answer 37

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

Loathsome

Answer 38

In Swift you can use this

    cell.selectionStyle = UITableViewCellSelectionStyle.None
    cell.preservesSuperviewLayoutMargins = false
    cell.separatorInset = UIEdgeInsetsZero
    cell.layoutMargins = UIEdgeInsetsZero

Pretension

Answer 39

simply put this two lines in cellForRowAtIndexPath method

• if you want to all separator lines are start from zero [cell setSeparatorInset:UIEdgeInsetsZero]; [cell setLayoutMargins:UIEdgeInsetsZero];

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

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

Holliholliday

Answer 40

For me none has worked except this workaround (Swift 3.0):

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
}

Sayce

Answer 41

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

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

}

Doorstop

Answer 42

XCode 7.1 iOS 7, 8, 9:

just put these two lines in your TabelViewCell:

    self.layoutMargins = UIEdgeInsetsZero;
    self.preservesSuperviewLayoutMargins = false;

That worked for me

Linnea

Answer 43

With Swift 2.2

create UITableViewCell extension

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
        }
    }
} 

Now you can use in your cellForRowAtIndex

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

Slapup