去掉cell前端15像素

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
   
    if ([cellrespondsToSelector:@selector(setSeparatorInset:)])
    {
       
        [cell setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)];
    }
    if(([[[UIDevicecurrentDevice]systemVersion]floatValue]>=8.0)?1:0)
    {
        if ([cellrespondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)])
        {
           
            [cell setPreservesSuperviewLayoutMargins:NO];
           
        }
        if ([cellrespondsToSelector:@selector(setLayoutMargins:)])
        {
            [cell setLayoutMargins:UIEdgeInsetsMake(0,0,0,0)];
           
        }
    }

}