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我在 UITableView 中有一个部分，一旦我点击它，就会有 4 个动画单元格下拉，但是，问题是当它们下拉时，它们会越过视图（屏幕），除非向下滚动，否则你看不到它们。我将如何做到这一点，以便一旦单击该部分，它将整个视图向上推，从而显示下拉菜单中的所有单元格？这是我的代码：

- (void) sectionOpened : (NSInteger) section{

    SectionInfo *array = [self.sectionInfoArray objectAtIndex:section];
    array.open = YES;

    NSInteger count = [array.category.list count];
    NSMutableArray *indexPathToInsert = [[NSMutableArray alloc] init];
    for (NSInteger i = 0; i<count;i++)
    {
        [indexPathToInsert addObject:[NSIndexPath indexPathForRow:i inSection:section]];
    }

    NSMutableArray *indexPathsToDelete = [[NSMutableArray alloc] init];
    NSInteger previousOpenIndex = self.openSectionIndex;
    if (previousOpenIndex != NSNotFound)
    {
        SectionInfo *sectionArray = [self.sectionInfoArray objectAtIndex:previousOpenIndex];
        sectionArray.open = NO;
        NSInteger counts = [sectionArray.category.list count];
        [sectionArray.sectionView toggleButtonPressed:FALSE];
        for (NSInteger i = 0; i<counts; i++)
        {
            [indexPathsToDelete addObject:[NSIndexPath indexPathForRow:i inSection:previousOpenIndex]];
        }
    }
    UITableViewRowAnimation insertAnimation;
    UITableViewRowAnimation deleteAnimation;
    if (previousOpenIndex == NSNotFound || section < previousOpenIndex)
    {
        insertAnimation = UITableViewRowAnimationTop;
        deleteAnimation = UITableViewRowAnimationBottom;
    }
    else
    {
        insertAnimation = UITableViewRowAnimationBottom;
        deleteAnimation = UITableViewRowAnimationTop;
    }

    [atableView beginUpdates];

    [atableView insertRowsAtIndexPaths:indexPathToInsert withRowAnimation:UITableViewRowAnimationTop];
    [atableView deleteRowsAtIndexPaths:indexPathsToDelete withRowAnimation:deleteAnimation];


    [atableView endUpdates];

    self.openSectionIndex = section;

}

有任何想法吗？

4

1 回答 1

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您是否尝试过使用此 tableView 方法？

- (void)scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated

所以你可以试试。

[atableView scrollToRowAtIndexPath:indexPathToInsert atScrollPosition: UITableViewScrollPositionTop animated:YES];
于 2013-10-21T17:39:16.110 回答