最初我需要在tableview中列出3个项目 点击其中的任何一个,它会显示3more ITems作为所选主要项目的子项目。
我正在使用的数组是
aryTemp = [[NSMutableArray alloc] initWithObjects:[NSDictionary dictionaryWithObjectsAndKeys:@"YES", @"isExpand", [NSArray arrayWithObjects:@"One",@"Two",@"Three", nil], @"data", nil], nil];
aryTemp1 = [[NSMutableArray alloc] initWithObjects:[NSDictionary dictionaryWithObjectsAndKeys:@"NO", @"isExpand", [NSArray arrayWithObjects:@"Doc", @"XML", @"PDF", nil], @"data", nil], nil];
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 3;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
int count = 0;
if(!boolIsExpanded)
count = 1;
else {
count = [[[aryTemp objectAtIndex:0] objectForKey:@"data"] count] + [[[aryTemp1 objectAtIndex:0] objectForKey:@"data"] count];
}
return count;
}
-(void)addOrDeleteRows:(NSIndexPath *)indexPath add:(BOOL)aBool
{
NSMutableArray *paths = [[NSMutableArray alloc] init];
if(boolIsExpanded)
{
boolIsExpanded=NO;
for (int i=1; i<=[[[aryTemp1 objectAtIndex:0] objectForKey:@"data"] count]; i++) {
NSIndexPath *indxPath;
indxPath = [NSIndexPath indexPathForRow:(indexPath.row)+i inSection:indexPath.section];
[paths addObject:indxPath];
NSLog(@"paths : %@",paths);
}
intPrevIndex = indexPath.row;
[tblView beginUpdates];
[tblView insertRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationLeft];
[tblView endUpdates];
}
else
{
boolIsExpanded = YES;
for (int i = 1; i <= [[[aryTemp1 objectAtIndex:0] objectForKey:@"data"] count]; i++) {
NSIndexPath *indxPath = [NSIndexPath indexPathForRow:(indexPath.row)+i inSection:indexPath.section];
[paths addObject:indxPath];
}
intPrevIndex = indexPath.row;
[tblView beginUpdates];
[tblView deleteRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationLeft];
[tblView endUpdates];
}
}
应该如何完成此计算?使用部分时。
插入行后,它会调用NumberOfRow
并因错误而崩溃
断言失败 - [UITableView _endCellAnimationsWithContext:],/ SourceCache / UIKit_Sim / UIKit-1914.84 / UITableView.m:1037
2012-10-03 11:37:43.955 ExpandRowsSample [1657:f803] 由于未捕获的异常'NSInternalInconsistencyException'而终止应用,原因:'无效更新:无效的行数在更新(6)之后,现有部分中包含的行数必须等于更新(1)之前该部分中包含的行数,加上或减去从中插入或删除的行数部分(0插入,0删除)和加或减移入或移出该部分的行数(0移入,0移出)。' *
答案 0 :(得分:0)
在更新表格视图期间,您还必须相应地修改其数据来源,据我所知- tableView:numberOfRowsInSection:
aryTemp
。
因此,在添加期间,您应该在[aryTemp addObject:...];
行之前进行一些[tblView endUpdates];
次调用,例如:
for (int i=1; i<=[[[aryTemp1 objectAtIndex:0] objectForKey:@"data"] count]; i++) {
{
// your current code
[aryTemp addObject:...];
}
intPrevIndex = indexPath.row;
[tblView beginUpdates];
[tblView insertRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationLeft];
[tblView endUpdates];
至于删除行,应该应用相同的概念。