允许左滑删除

      - (void)viewDidLayoutSubviews{

            [super viewDidLayoutSubviews];
            // 替换删除按钮
            [self configSwipeButtons];

    }
       // 是否允许对cell进行滑动操作
    -(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
    {
        return YES;
    }
    -(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
    {
        // 定义按钮为删除按钮
        return UITableViewCellEditingStyleDelete;
    }
     -(UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath
    {

        if (@available(iOS 11.0, *)) {
        //删除
            UIContextualAction *deleteAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL))
            {
            // 执行删除的操作
            // 。。。。。你的代码
                [self configSwipeButtons];
            }];
        
        deleteAction.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0];
        NSArray<UIContextualAction*> *contextualAction;
        contextualAction = @[deleteAction];
        
        UISwipeActionsConfiguration *actions = [UISwipeActionsConfiguration configurationWithActions:contextualAction];
        // 禁止侧滑无线拉伸
        actions.performsFirstActionWithFullSwipe = NO;
        [self.view setNeedsLayout];
        return actions;
    }else{
        
        [self.view setNeedsLayout];
        
        return nil;
    }

}
   /*
    -(NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
    {
        // 定义左滑功能为删除
        UITableViewRowAction * actionDeleate = [UITableViewRowAction rowActionWithStyle:(UITableViewRowActionStyleNormal) title:@"\b" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
            // 删除的具体操作
        }];
        actionDeleate.backgroundColor = [UIColor whiteColor];
        return @[actionDeleate];
    }
  */

定义左滑出来的删除按钮 在控制器 viewDidLayoutSubviews中执行

        - (void)configSwipeButtons
    {
          // iOS 11层级 : UITableView -> UISwipeActionPullView
          for (UIView *subview in self.tableView.subviews)
          {
               // ios 11以下
               if ([subview isKindOfClass:NSClassFromString(@"UISwipeActionPullView")] && [subview.subviews count] >= 1)
               {
                    UIButton*readButton = subview.subviews[0];
                    [readButton setImage:[UIImage imageNamed:@"plan_delete"] forState:UIControlStateNormal];
                    break;
               }
                // ios 13
               else if ([subview isKindOfClass:NSClassFromString(@"_UITableViewCellSwipeContainerView")] && [subview.subviews count] >= 1) {
                   for (UIView *subview0 in subview.subviews){
                       if ([subview0 isKindOfClass:NSClassFromString(@"UISwipeActionPullView")] && [subview0.subviews count] >= 1){
                           UIButton *deleteButton = subview0.subviews[0];
                           [deleteButton setImage:[UIImage imageNamed:@"plan_delete"] forState:UIControlStateNormal];
                           break;
                       }
                   }
               }

          }
    }