Question

I have a RootViewController that is a UIViewController with a UITableView. This RootViewController pushes a ChildViewController based on the row selected. When I pop the ChildViewController and go back to the RootViewController, I want to be able to know the indexPath that was selected. Once I have the indexPath, I want to call the selectRowAtIndexPath:animated:scrollPosition: method to scroll that selected indexPath to the top.

I know how to grab the selected indexPath within the tableview (indexPathForSelectedRow) but I don’t know how to hold onto that value when I push the ChildViewController and then pop back to the RootViewController.

Answer 1

Add a field to your table view controller .h file:,

    NSIndexPath* selectedIndexPath;

    //...
}

//...

@property (nonatomic, retain) NSIndexPath* selectedIndexPath;

//...

@end

and then add

@synthesize selectedIndexPath;

in your .m file. After that, store the value using

    self.selectedIndexPath = myIndexPath;

and then use it as follows:

- (void)viewWillAppear:(BOOL)animated {
        [self.tableView scrollToRowAtIndexPath:selectedIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
}