单元格动画停止分数必须大于起始分数

Question

我在表视图单元格中使用动画...当单元格完全可见时,动画工作正常.如果当时任何单元格部分可见由于动画我的应用程序在行[_Mytableviewobject endUpdates]中崩溃了;

崩溃日志=因未捕获的异常'NSInternalInconsistencyException'而终止应用程序,原因:'单元格动画停止分数必须大于开始分数'

代码部分:

-(void)sectionHeaderView:(SectionHeaderView*)sectionHeaderView sectionOpened:(NSInteger)sectionOpened
{
     //ENSLog(self, _cmd);
    [_caseTable reloadData];
    NSInteger countOfRowsToInsert = 1;
    SectionInfo *sectionInfo = [self.sectionInfoArray objectAtIndex:sectionOpened];
    sectionInfo.open = YES;


    NSMutableArray *indexPathsToInsert = [[[NSMutableArray alloc] init] autorelease];
    for (NSInteger i = 0; i < countOfRowsToInsert; i++) 
    {
        [indexPathsToInsert addObject:[NSIndexPath indexPathForRow:i inSection:sectionOpened]];
    }

    NSMutableArray *indexPathsToDelete = [[[NSMutableArray alloc] init] autorelease];
    NSInteger previousOpenSectionIndex = self.openSectionIndex;
    if (previousOpenSectionIndex != NSNotFound)
    {
        SectionInfo *previousOpenSection = [self.sectionInfoArray objectAtIndex:previousOpenSectionIndex];
        previousOpenSection.open = NO;
        [previousOpenSection.headerView toggleOpenWithUserAction:NO];
        NSInteger countOfRowsToDelete = 1;
        for (NSInteger i = 0; i < countOfRowsToDelete; i++)
        {
            [indexPathsToDelete addObject:[NSIndexPath indexPathForRow:i inSection:previousOpenSectionIndex]];
        }
    }

    // Style the animation so that there's a smooth flow in either direction.
    UITableViewRowAnimation insertAnimation;
    UITableViewRowAnimation deleteAnimation;
    if (previousOpenSectionIndex == NSNotFound || sectionOpened < previousOpenSectionIndex) 
    {
        insertAnimation = UITableViewRowAnimationTop;
        deleteAnimation = UITableViewRowAnimationBottom;
    }
    else
    {
        insertAnimation = UITableViewRowAnimationTop;
        deleteAnimation = UITableViewRowAnimationTop;
    }

    // Apply the updates.
    [_caseTable beginUpdates];
    [_caseTable deleteRowsAtIndexPaths:indexPathsToDelete withRowAnimation:deleteAnimation];
    [_caseTable insertRowsAtIndexPaths:indexPathsToInsert withRowAnimation:insertAnimation];
    [_caseTable endUpdates];
    //ExNSLog(self, _cmd);

    self.openSectionIndex = sectionOpened;
    //ExNSLog(self, _cmd);

}




-(void)sectionHeaderView:(SectionHeaderView*)sectionHeaderView sectionClosed:(NSInteger)sectionClosed
{
     //ENSLog(self, _cmd);
    SectionInfo *sectionInfo = [self.sectionInfoArray objectAtIndex:sectionClosed];
    sectionInfo.open = NO;
    NSInteger countOfRowsToDelete = [_caseTable numberOfRowsInSection:sectionClosed];
    if (countOfRowsToDelete > 0)
    {
        NSMutableArray *indexPathsToDelete = [[[NSMutableArray alloc] init] autorelease];
        for (NSInteger i = 0; i < countOfRowsToDelete; i++) 
        {
            [indexPathsToDelete addObject:[NSIndexPath indexPathForRow:i inSection:sectionClosed]];
        }
        [_caseTable deleteRowsAtIndexPaths:indexPathsToDelete withRowAnimation:UITableViewRowAnimationTop];
    }
    self.openSectionIndex = NSNotFound;
     //ExNSLog(self, _cmd);
}

Answer 1

在尝试使用虚拟页脚删除潜在的"空"表格视图单元格时,我遇到了同样的崩溃.

解决方案是摆脱

tableView:viewForFooterInSection:
tableView:heightForFooterInSection:

并在viewDidLoad中用以下内容替换它们:

tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

Answer 2

是的我也面临这种类型的问题,做一件事就是删除页脚视图.

Answer 3

它似乎发生在设置时 tableview

-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section

而tableview风格设置Plain而不是Grouped风格

Answer 4

在ios 7更新后我遇到了同样的问题:在我的表视图中,在"deleteRowsAtIndexPaths"中出现崩溃以进行展开/折叠.

令人惊讶的是,我通过使用heightForHeaderInsection而不是heightForFooterInSection解决了这个问题.

-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
    return 1; // it was 0 before the fix
}


-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
    return 0; // it was 1 before the fix
}

已报告此问题(https://devforums.apple.com/message/795349).