xcode 选择超过特定数量的行时，用于 UITableView 的索引路径无效

Invalid index path for use with UITableView when selecting rows beyond a certain number

提问by user928622

- (int)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;

}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:   (NSInteger)section
{
return @"Substitutes";
}

- (int)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section
{

int cnt=[subArray count];
return [subArray count];
}

- (float)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath    *)indexPath
{
NSArray *visible = [tableView indexPathsForVisibleRows];

NSIndexPath *indexpath = (NSIndexPath*)[visible objectAtIndex:0];


if ((selectedIndexPath != nil) && (selectedIndexPath.row == indexPath.row)){


    NSUInteger row = [indexPath row];

    NSString *subtitle =[[subArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    NSString *subDet =[[subDetArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    int height =  [self heightOfCellWithTitle:subtitle andSubtitle:subDet];
    return(height < CONST_Cell_height ? CONST_Cell_height : height);


}

return 40.0;

}

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSUInteger row = [indexPath row];
static NSString *CellIdentifier = @"SearchCell";
UITableViewCell *cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
if ((selectedIndexPath != nil) && (selectedIndexPath.row == indexPath.row)){
    cell = [self CreateMultilinesCell:CellIdentifier];

    cell.textLabel.text=[[subArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    cell.detailTextLabel.text =[[subDetArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    return cell;        
} else {

    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];

    cell.textLabel.text=[[subArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    cell.detailTextLabel.text =[[subDetArray objectAtIndex:row] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    return cell; 
 }

}

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (selectedIndexPath == indexPath) {
    selectedIndexPath = nil;
    [table reloadData];
} else {
    selectedIndexPath = indexPath;
    //static NSString *CellIdentifier = @"Cell";
    //UITableViewCell *cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    //cell.textLabel.text=@"test";
    //cell.detailTextLabel.text =@"det Test";
    [table reloadData];
}
 [self.table deselectRowAtIndexPath : indexPath animated : NO];
 [tableView beginUpdates];
 [tableView endUpdates];

}

i implemented table view using above code.when i selecting row no. 26 v or more it expands on selection but doesn't contract on next click.& gives me error on scroll

我使用上面的代码实现了表格视图。当我选择行号时。26 v 或更多它会在选择时扩展，但不会在下次单击时收缩。& 在滚动时出现错误

NSInternalInconsistencyException', reason: 'Invalid index path for use with UITableView. Index paths passed to table view must contain exactly two indices specifying the section and row. Please use the category on NSIndexPath in UITableView.h if possible.'

NSInternalInconsistencyException'，原因：'与 UITableView 一起使用的索引路径无效。传递给表视图的索引路径必须恰好包含两个指定节和行的索引。如果可能，请在 UITableView.h 中使用 NSIndexPath 上的类别。

code work smoothly for 25 rows. where i went wrong?

代码可以顺利运行 25 行。我哪里出错了？

采纳答案by user928622

i got it finaly.:) selectedIndexpath gives garbage. i replace it by self.selectedIndexpath. i didnt get why it do so on record no. 25 onwards.But this worked for me

我终于明白了。:) selectedIndexpath 给出了垃圾。我用 self.selectedIndexpath 替换它。我不明白为什么它会这样做。25 岁以后。但这对我有用

回答by Hardik Mamtora

Use like this

像这样使用

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:sender.tag-1 inSection:0];

CGRect rectOfCellInTableView = [objTableView rectForRowAtIndexPath:indexPath];

CGRect rectOfCellInSuperview = [objTableView convertRect:rectOfCellInTableView toView:[objTableView superview]];