我遇到了有关可扩展tableviewcell的问题。当我尝试扩展tableviewcell时它会崩溃。 我不明白app崩溃的地方。请给我一些解决方案。 请帮助我。
我的代码:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (appDelegate.array_proj == (id)[NSNull null])
return 0;
else
return [appDelegate.array_proj count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([expandedSections containsIndex:section])
{
if ([appDelegate.array_task count]==0)
{
return 0;
}
else
{
NSLog(@"array task count: %d",[appDelegate.array_task count]);
return [appDelegate.array_task count];
}
}
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell ==nil){
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.backgroundColor = [UIColor clearColor];
cell.textLabel.textColor = [UIColor colorWithRed:53.0/255 green:53.0/255 blue:53.0/255 alpha:1.0];
UIImageView *backgroundView = [[UIImageView alloc] initWithFrame:CGRectZero];
cell.backgroundView = backgroundView;
backgroundView.image = [UIImage imageNamed:@"prjctcell_bg.png"];
if (!indexPath.row)
{
objePro = [appDelegate.array_proj objectAtIndex:indexPath.section];
cell.textLabel.text = objePro.projctname;
appDelegate.intForPid=objePro.pojctid;
if ([expandedSections containsIndex:indexPath.section])
{
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor blackColor] type:DTCustomColoredAccessoryTypeUp];
}
else
{
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor blackColor] type:DTCustomColoredAccessoryTypeDown];
}
}
else
{
if (appDelegate.array_task != (id)[NSNull null])
{
objePro = [appDelegate.array_proj objectAtIndex:appDelegate.storeAppDelegateIndex];
objeTask = [appDelegate.array_task objectAtIndex:indexPath.section];
cell.textLabel.text = objeTask.taskname;
cell.backgroundView = nil;
cell.accessoryView = nil;
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
}
return cell;
}
- (BOOL)tableView:(UITableView *)tableView canCollapseSection:(NSInteger)section
{
return YES;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
objePro = [appDelegate.array_proj objectAtIndex:indexPath.section];
appDelegate.intForPid=objePro.pojctid;
[appDelegate selectTask:appDelegate.intForPid];
if (!indexPath.row)
{
[tblView beginUpdates];
//only first row toggles expand/collapse
[tblView deselectRowAtIndexPath:indexPath animated:YES];
NSInteger sections = indexPath.section;
BOOL currentlyExpanded = [expandedSections containsIndex:sections];
NSInteger rows;
NSMutableArray *tmpArray = [NSMutableArray array];
if (currentlyExpanded)
{
rows = [self tableView:tblView numberOfRowsInSection:sections];
[expandedSections removeIndex:sections];
}
else
{
[expandedSections addIndex:sections];
rows = [self tableView:tblView numberOfRowsInSection:sections];
}
for (int i=1; i<rows; i++)
{
NSIndexPath *tmpIndexPath = [NSIndexPath indexPathForRow:i inSection:sections];
[tmpArray addObject:tmpIndexPath];
}
UITableViewCell *cell = [tblView cellForRowAtIndexPath:indexPath];
if (currentlyExpanded)
{
[tblView deleteRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor blackColor] type:DTCustomColoredAccessoryTypeDown];
}
else
{
[tblView insertRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor blackColor] type:DTCustomColoredAccessoryTypeUp];
}
[tblView endUpdates];
}
}
它给出错误: 断言失败 - [UITableView _endCellAnimationsWithContext:],/ SourceCache / UIKit_Sim / UIKit-2380.17 / UITableView.m:1070 2013-03-20 19:14:00.102 Daily Achiever [2886:c07] * 由于未捕获的异常'NSInternalInconsistencyException'而终止应用程序,原因:'无效更新:第1部分中的行数无效。更新后的现有部分中包含的行数(3)必须等于更新前的该部分中包含的行数(1),加上或减去从该部分插入或删除的行数(插入0, 0删除)并加上或减去移入或移出该部分的行数(0移入,0移出)。'
答案 0 :(得分:0)
您的问题出在以下几行代码中:
[tblView deleteRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
和
[tblView insertRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
您发布的崩溃是由于第一个崩溃。在这些行中,您尝试从表中插入/删除行,但您的- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
方法不会相应地更改。
在您从表中添加/删除单元格时,您似乎希望在appDelegate.array_task
数组中添加/删除项目(因为这是您确定行数的数组)。
作为旁注,行:
if ([appDelegate.array_task count]==0) {
return 0;
}
没有做任何事情,因为你有else return [appDelegate.array_task count]
,这意味着如果[appDelegate.array_task count]==0
仍然会返回0。
答案 1 :(得分:0)
添加部分时使用此代码
NSArray *insertIndexPaths = [NSArray arrayWithObjects:
[NSIndexPath indexPathForRow:2 inSection:0],
[NSIndexPath indexPathForRow:3 inSection:0],
nil];
用于插入行
[tableView insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationRight];
如果你要添加两个部分
[tableView insertSections:[NSIndexSet indexSetWithIndex:indexPath.section + 1] withRowAnimation:UITableViewRowAnimationAutomatic];
[tableView insertSections:[NSIndexSet indexSetWithIndex:indexPath.section + 2] withRowAnimation:UITableViewRowAnimationAutomatic];
同样删除部分
[tableView deleteSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:YES];
[tableView deleteSections:[NSIndexSet indexSetWithIndex:indexPath.section - 1] withRowAnimation:YES];
行删除
[tableView deleteRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationRight];