iOS Swift和reloadRowsAtIndexPaths编译错误 [英] iOS Swift and reloadRowsAtIndexPaths compilation error

问题描述

我已经用xCode/Swift陷入僵局，并刷新了UITableView的一行.

I've hit deadlock with xCode/Swift and refreshing a single row of UITableView.

此行有效....

self.tableView.reloadData();

此行不

self.tableView.reloadRowsAtIndexPaths([_currentIndexPath], withRowAnimation: UITableViewRowAnimation.None);

自动完成建议 reloadRowsAtIndexPaths 并给出语法，但是在编译时，出现错误:

Auto-complete is suggesting reloadRowsAtIndexPaths and giving the syntax but on compilation, I'm getting the error:

找不到成员'reloadRowsAtIndexPaths".

'Could not find member 'reloadRowsAtIndexPaths'.

如果我右键单击self.tableview中的"jump to definition"，则找不到该符号.

If I right click and 'jump to definition' in self.tableview, the symbol is not found.

我希望我在这里不会做任何令人尴尬的愚蠢工作，希望能有所帮助.我可以使用reloadData，但想知道为什么这在这里不起作用.

I'm hoping I'm not doing anything embarrassingly stupid here and would appreciate help. I could use reloadData but want to know why this isn't working here.

推荐答案

我相信_currentIndexPath是可选的.像

var _currentIndexPath:NSIndexPath?

所以尝试:

if let indexPath = _currentIndexPath {
    self.tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.None)
}
else {
    // `_currentIndexPath` is nil.
    // Error handling if needed.
}

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