How do I adjust the left margin for prototype cells in a UITableView?

Question

If I create a UITableViewController, for example via File → New Project... → iOS → Master-Detail Application in Xcode, a UITableView

Answer 1

Just add the method in your code as mentioned in the below link

How do I eliminate the margin on the left side of a UITableView, without creating a gap on the right?

The method is like:

-(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];
    }
}

Swift 3 and 4

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

    if (cell.responds(to: #selector(setter: UIView.layoutMargins))) {
        cell.layoutMargins = UIEdgeInsets.zero
    }
    if tableView.responds(to: #selector(setter: UITableViewCell.separatorInset)) {
        tableView.separatorInset = .zero
    }

}