如何获取NSIndexPath部分中的行数

Question

I want to get the number of rows in an NSIndexPath section. For all my searching here & in Apple's docs I can't find how to get this value. Any clues on it?

My specific purpose is to use that to determine whether or not the selected row is the last row in the section so if anyone has a suggestion for determining that by another means that would be as good.

Answer 1

Everything is in docs

numberOfRowsInSection:

int rows = [table numberOfRowsInSection:indexPath.section];

Answer 2

唯一的方法是询问表的数据源：

NSUInteger rowCount = [tableView.dataSource tableView:tableView numberOfRowsInSection:indexPath.section];

Answer 3

Here's how I do it in my case:

The table section holds a list of objects stored in NSArray , hence the amount of rows in section is the amount of objects in the array. In your case - if row is not the object from array - just do the check

if ([indexPath row] + 1 == [_objectsArray count]) {
    ...

But if your items in table are not held in a collection, you can easily retrieve number of rows in section just by calling appropriate method on tableView object in your didSelectRow.. delegate method:

NSInteger numberOfRows = [tableView numberOfRowsInSection:[indexPath section]];

Answer 4

You can call tableView:numberOfRowsInSection: method of the UITableViewDataSource , passing the section number. However, it is your own code that produces this number based on what's in the model, so it may make sense to look at the implementation of tableView:numberOfRowsInSection: in your data source to see if you could get the same answer through an alternative path.

Answer 5

If you are talking about on a UITableView, you can ask it's dataSource, which is somewhat likely to be yourself :-)

[self.tableView.dataSource tableView: self.tableView numberOfRowsInSection: indexPath.section];

// or, if you are the dataSource...
[self tableView: self.tableView numberOfRowsInSection: indexPath.section];