一、单按钮左滑动删除(IOS8之前)

只要实现了- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath;这个代理方法就拥有了滑动删除的功能

单按钮滑动删除方法一：

//滑动删除执行的代理方法
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"点击左滑出现的Delete按钮执行的操作");
    [_array  removeObjectAtIndex:indexPath.row];
    [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationTop];

}

//修改默认Delete按钮的文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return @"删除";
}

二、多按钮组左滑动删除(IOS8之后)

我们在使用一些应用的时候，在滑动一些联系人的某一行的时候，会出现删除、置顶、更多等等的按钮，在iOS8之前，我们都需要自己去实现。但是，到了iOS8，，只需要一个代理方法和一个类就搞定了

- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    UITableViewRowAction *action = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"关注" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        NSLog(@"点击了删除");
        // 1. 更新数据
        [DataArray removeObjectAtIndex:indexPath.row];
        // 2. 更新UI
        [tableView deleteRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
        
    }];
    action.backgroundColor=[UIColor greenColor];
    
    UITableViewRowAction *action1 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"删除" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        
  
    }];

    UITableViewRowAction *action2 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"置顶" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        
        
    }];
    return @[action1,action,action2];
}

单按钮左滑动删除只需要返回一个元素的数组就行了，因此单按钮滑动删除方法二就来了

单按钮滑动删除方法二：
- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    UITableViewRowAction *action = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"关注" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        NSLog(@"点击了关注");
        
    }];
    action.backgroundColor=[UIColor greenColor];

    return @[action];
}

三、IOS11新增的滑动删除

IOS11新增了两个代理方法，可以给这些按钮添加图片了。如果实现了新增的Swipe actions的代理方法将会取代(tableView: editActionsForRowAtIndexPath:)

1.向左滑动在右边显示

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath

使用说明：

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath{
    /* UIContextualActionStyle有两种类型:
    UIContextualActionStyleNormal,//置顶、删除、已读都可以使用该类型
    UIContextualActionStyleDestructive//删除类型可使用，从左到右一直滑cell,不用点击删除按钮就可以直接执行删除操作
    */
    //1.创建UIContextualAction对象
    UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"delete" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        //[self.titleArr removeObjectAtIndex:indexPath.row];
        completionHandler (YES);
    }];
    //2.给滑动按钮添加背景、图片
    deleteRowAction.image = [UIImage imageNamed:@"icon_del"];
    deleteRowAction.backgroundColor = [UIColor blueColor];
    
   //3.返回滑动按钮
    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction]];
    return config;
}

2、向右滑动在左边显示（新增的右滑功能，以前都是左滑）
左滑是系统删除按钮，右滑是自定义的滑动按钮

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView leadingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath{
    UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:@"取消" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        //[self.titleArr removeObjectAtIndex:indexPath.row];
        completionHandler (YES);
    }];
    deleteRowAction.image = [UIImage imageNamed:@"icon_del"];
    deleteRowAction.backgroundColor = [UIColor blueColor];
    
    UIContextualAction *RowAction1 = [UIContextualAction contextualActionWithStyle:  UIContextualActionStyleNormal title:@"关注" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        //[self.titleArr removeObjectAtIndex:indexPath.row];
        completionHandler (YES);
    }];
   RowAction1.image = [UIImage imageNamed:@"icon_del"];
    RowAction1.backgroundColor = [UIColor greenColor];

    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction,RowAction1]];
    return config;
    }