最近为了适配iOS 11，碰到一些问题。现在ipa基于iOS SDK 9 运行在iOS11.1上发现tableview的分割线不能订到两边。查阅资料特将解决办法分享一下！
//
// UITableView+NASeparatorInset.m
// iPoS_IOS
//
// Created by Jason on 17/11/7.
// Copyright © 2017年 Treasure Frontier System Sdn. Bhd. All rights reserved.
//

import "UITableView+NASeparatorInset.h"

import <objc/runtime.h>

@implementation UITableView (NASeparatorInset)

• (void)load {
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
  Class class = [self class];

    SEL originalSelector = @selector(initWithFrame:style:);
    SEL swizzledSelector = @selector(initWithNAFrame:style:);
    
    Method originalMethod = class_getInstanceMethod(class, originalSelector);
    Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
    
    BOOL success = class_addMethod(class, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod));
    if (success) {
        class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));
    } else {
        method_exchangeImplementations(originalMethod, swizzledMethod);
    }
  

  });
  }

• (instancetype)initWithNAFrame:(CGRect)frame style:(UITableViewStyle)style{
  UITableView *tableView=nil;

  if ([self respondsToSelector:@selector(initWithNAFrame:style:)]) {
  tableView= [self initWithNAFrame:frame style:style];
  }
  if([tableView respondsToSelector:@selector(setCellLayoutMarginsFollowReadableWidth:)])
  {
  tableView.cellLayoutMarginsFollowReadableWidth = NO;
  }
  if ([tableView respondsToSelector:@selector(setSeparatorInset:)]) {
  [tableView setSeparatorInset:UIEdgeInsetsZero];
  }
  if ([tableView respondsToSelector:@selector(setLayoutMargins:)]) {
  [tableView setLayoutMargins:UIEdgeInsetsZero];
  }

  return tableView;

}

@end