UITableView doesn't keep row selected upon return

Question

i have several table views in my app. I am familiar with the usual behaviour of tables, that when you select a row and progress to a pushed view, it turnes blue, then when y

Answer 1

NSIndexPath *_selectedIndex ;

use the above global variable to store in selected in the table view delegate method

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
 _selectedIndex = [self.tableView indexPathForSelectedRow];
}

and in the following delegate of UINavigationController delegate method

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[self.tableView selectRowAtIndexPath:_selectedIndex animated:NO scrollPosition:UITableViewScrollPositionNone];

}