Question

我有一组UITableViewControllers，我在超级控制器中使用这个协议方法添加到容器和superview中：

-(void)indexPathSelected:(NSIndexPath*)selectedIndex;
{
//This method is fired when the index path is selected in the content container. The content container
//could contain WobletTableViewController, WobletDetailViewController or the EventsTableViewController
for (UIViewController *childViewController in [self childViewControllers])
{
    if ([childViewController isKindOfClass:[WobletTableViewController class]])
    {
        UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        TableDetailViewController *rewardsTableVC = [sb instantiateViewControllerWithIdentifier:@"restaurantDetailsTable"];
        //tvc.delegate=self;
        //found container view controller
        TableDetailViewController *restaurantsTableVC = (TableDetailViewController *)childViewController;
        [restaurantsTableVC removeFromParentViewController];
        [restaurantsTableVC.view removeFromSuperview];

        rewardsTableVC.rewards=[(NSDictionary*)[self.restaurants objectAtIndex:selectedIndex.row] objectForKey:@"rewards"];
        [self addChildViewController:rewardsTableVC];
        [self.contentContainer addSubview:rewardsTableVC.view];
    }
}

}

据我所知，这很好用。接下来，我不得不调整单元格的大小，所以我实现了这样的委托方法：

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:    (NSIndexPath*)indexPath
{
    if (indexPath.section == 0) {
        if (indexPath.row == 0) {
            return 347;
        }
    }
    return 71;
}

细胞也非常标准地创建：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:  (NSIndexPath *)indexPath
{
UITableViewCell *cell;
if(indexPath.row==0)
{
    NSString *CellIdentifier = @"topDetailCell";
    cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    assert([cell isMemberOfClass:[HeaderCell class]]);
}
else
{
    NSString *CellIdentifier = @"rewardCell";
    cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    assert([cell isMemberOfClass:[RewardCell class]]);
}
return cell;
}

添加此方法后，嵌入的tableview会在滚动后自动滚动到顶部。在调整高度之前没有发生这种情况。怎么了？

Answer 1

当我以编程方式创建表视图时，这里有一个简单的问题。由于它位于容器视图中，因此需要将其框架设置为容器视图的边界：

-(void)indexPathSelected:(NSIndexPath*)selectedIndex;
{
//This method is fired when the index path is selected in the content container. The content container
//could contain WobletTableViewController, WobletDetailViewController or the EventsTableViewController
for (UIViewController *childViewController in [self childViewControllers])
{
    if ([childViewController isKindOfClass:[WobletTableViewController class]])
    {
        UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        TableDetailViewController *rewardsTableVC = [sb instantiateViewControllerWithIdentifier:@"restaurantDetailsTable"];
        //tvc.delegate=self;
        //found container view controller
        TableDetailViewController *restaurantsTableVC = (TableDetailViewController *)childViewController;
        rewardsTableVC.view.frame=self.contentContainer.bounds;
        [restaurantsTableVC removeFromParentViewController];
        [restaurantsTableVC.view removeFromSuperview];

        rewardsTableVC.rewards=[(NSDictionary*)[self.restaurants objectAtIndex:selectedIndex.row] objectForKey:@"rewards"];
        [self addChildViewController:rewardsTableVC];
        [self.contentContainer addSubview:rewardsTableVC.view];
    }
}
}

当我以编程方式设置高度时，uitableview不滚动

1 个答案: