How to get indexPath.row of tableView which is currently being displayed?

You can use tableView indexPathsForVisibleRows function, which returns an NSArray of NSIndexPath for all visible UITableViewCell. From indexPath.row you can find your array index.

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

indexPath.row will give you index of first object displayed.

[self.myTableView visibleCells];

NSArray *anArrayOfIndexPath = [NSArray arrayWithArray:[self.myTableView indexPathsForVisibleRows]];

NSIndexPath *indexPath= [anArrayOfIndexPath lastObject];

Hope this will help you.

you can use indexPathsForVisibleRows

Returns an array of index paths each identifying a visible row in the receiver.

- (NSArray *)indexPathsForVisibleRows

Return Value

An array of NSIndexPath objects each representing a row index and section index that together identify a visible row in the table view. Returns nil if no rows are visible.