iOS 9 UITableView separators insets (significant left margin)

问题

I have a problem with separators between UITableViewCells in UITableView on iOS 9. They have the significant left margin. I already have code for removing spacing introduced by iOS 8 but it doesn't work with iOS 9. It looks like they added something else. I suppose it might be connected with layoutMarginsGuide but I haven't figured it out yet. Does anyone had a similar problem and found out the solution?

回答1:

Okay, I have found out the solution. The only thing required for that is to set on the presenting instance of UITableView that flag cellLayoutMarginsFollowReadableWidth

myTableView.cellLayoutMarginsFollowReadableWidth = NO;

I wanted to find some reference in the documentation but it looks like it is not ready yet, only mentioned on diff page.

As the flag was introduced in iOS 9 for the backward compatibility you should add a check before trying to set it:

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

For Swift 2.0 you can use #available to check iOS version.

if #available(iOS 9, *) {
    myTableView.cellLayoutMarginsFollowReadableWidth = false
}

Moreover you need to compile it with Xcode 7 or above.

EDIT

Please keep in mind that this is the only required fix if your separators looked "fine" up to iOS 8, otherwise you need to change a bit more. You can find info how to do this already on SO.

回答2:

If you want to do it in interface builder. The default separator inset is Automatic. Change it to custom by selecting the dropdown.

回答3:

Swift 2.2 iOS 9.3

In viewDidLoad

tableView.cellLayoutMarginsFollowReadableWidth = false

In UITableViewDelegates

func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    if cell.respondsToSelector(Selector("setSeparatorInset:")){
        cell.separatorInset = UIEdgeInsetsZero
    }
    if cell.respondsToSelector(Selector("setPreservesSuperviewLayoutMargins:")) {
        cell.preservesSuperviewLayoutMargins = false
    }
    if cell.respondsToSelector(Selector("setLayoutMargins:")){
        cell.layoutMargins = UIEdgeInsetsZero
    }
}

回答4:

Perfect Solution upto iOS 9

In viewDidLoad

- (void)viewDidLoad {
    [super viewDidLoad];
    //Required for iOS 9
    if ([[[UIDevice currentDevice]systemVersion]floatValue] >= 9.0) {
        self.testTableView.cellLayoutMarginsFollowReadableWidth = NO;
    }
}

In TableViewDelegate methods add following 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];
    }
}

回答5:

Swift 3.0 / 4.0

tableView.cellLayoutMarginsFollowReadableWidth = false

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

回答6:

Based on different answers here, I am able to remove the gap from separator with these lines of codes in Swift:

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

But still I am having this small gap before the text:

回答7:

This worked perfectly for me in 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;
    }

回答8:

The accepted answer did not work for me. Until I moved setCellLayoutMarginsFollowReadableWidth BEFORE setLayoutMargins (still needed for iOS 8):

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

if ([_tableView respondsToSelector:@selector(setLayoutMargins:)]) {
  _tableView.layoutMargins = UIEdgeInsetsZero;
}

回答9:

- (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];
    }

}

回答10:

For iOS 8 and 9

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([UITableView instancesRespondToSelector:@selector(setLayoutMargins:)]) [[UITableViewCell appearance] setLayoutMargins:UIEdgeInsetsZero];
    if ([UITableView instancesRespondToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) [[UITableViewCell appearance] setPreservesSuperviewLayoutMargins:NO];
}

and

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

回答11:

This is my solution for Swift 3.0/iOS 10 in XCode 8.2.1.

I have created a subclass for UITableview which works for IB and programmatically create tableviews.

import UIKit

class EXCSuperTV: UITableView
{
    required init?(coder aDecoder: NSCoder)
    {
        super.init(coder: aDecoder)
        setupView()
    }

    override init(frame: CGRect, style: UITableViewStyle)
    {
        super.init(frame: frame, style: style)
        setupView()
    }

    func setupView() {}
}

class EXCNoFooter: EXCSuperTV
{
    override func setupView()
    {
        super.setupView()
        //tableFooterView = UIView.Zero()
    }
}


class EXCMainTV: EXCNoFooter
{
    override func setupView()
    {
        super.setupView()
        separatorInset = UIEdgeInsets.zero
    }
}

来源：https://stackoverflow.com/questions/31537196/ios-9-uitableview-separators-insets-significant-left-margin