Xcode - [UITableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:]: 行 (7) 超出了第 (0) 部分的边界 (0)。
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Xcode - [UITableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:]: row (7) beyond bounds (0) for section (0).'
提问by Declan Land
I've just implemented the AGPhotoBrowserclass into my Xcode project and I'm getting the error of:
我刚刚在AGPhotoBrowser我的 Xcode 项目中实现了这个类，我收到了以下错误：
Terminating app due to uncaught exception 'NSRangeException', reason: '-[UITableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:]: row (7) beyond bounds (0) for section (0).'
The code where the crash happens is here:
发生崩溃的代码在这里：
#pragma mark - UIScrollViewDelegate
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
if (!self.currentWindow.hidden && !_changingOrientation) {
[self.overlayView resetOverlayView];
CGPoint targetContentOffset = scrollView.contentOffset;
UITableView *tv = (UITableView*)scrollView;
NSIndexPath *indexPathOfTopRowAfterScrolling = [tv indexPathForRowAtPoint:targetContentOffset];
[self setupPhotoForIndex:indexPathOfTopRowAfterScrolling.row];
}
}
The crash seems to happen as soon as I exit the ViewControllerwhere this is implemented?
一旦我退出ViewController执行此操作的位置，崩溃似乎就会发生？
回答by Fawad Masud
The error tells you that your table does not have any row at index 7. It means that your table view consists of 7 rows and maximum range of indexPath.row can be 6 (because row index of a UITableView starts from 0). Whenever you will call a row at index path beyond range of the table, it will throw an error.
该错误告诉您，您的表在索引 7 处没有任何行。这意味着您的表视图由 7 行组成，并且 indexPath.row 的最大范围可以是 6（因为 UITableView 的行索引从 0 开始）。每当您在超出表范围的索引路径上调用一行时，它都会引发错误。
回答by AmitaiB
I received this error when I neglected to set the tableview's Delegate and DataSource; so it seems that nilis also "out of bounds".
当我忽略设置 tableview 的 Delegate 和 DataSource 时收到此错误；所以这似乎nil也是“越界”。
Xcode:6.4, iOS:8.x
Xcode:6.4, iOS:8.x
回答by saraman
Reload the TableViewdata before calling scrollToRowAtIndexPath().
TableView在调用之前重新加载数据scrollToRowAtIndexPath()。
[contentTableView reloadData];
