[ipad] SplitView and passing value to DetailViewController

Question

Sorry for my english
i'm creating a Splitview project
in my RootViewController i have a table view
that when use didSelectRowAtIndexPath load another one tableview with WithNibName method;
When i try to pass a value from a selected cell to the detailview doesn't work without error;
to test i try to pass value to detailview from second table loading it as first one table in pop control and it work;
what am i forgetting?
I attached You my project
First table is loaded from RootViewController class
Second one form SecondTable class
and the DetailView from DetailViewController
thanks....
www.emanueleferrari.it/test.zip

Answer 1

Hi Emanuele, and welcome to the Dev Forum!
bolco wrote:
When i try to pass a value from a selected cell to the detailview doesn't work without error;
I don't have an iPad dev environment right now, so can't run your project, but here are some suggestions that might lead you in the right direction:
Since the transition between the RootViewController and the SecondTable controller object is working correctly under your split view controller, I don't see why the transition from the SecondTable controller object to the DetailViewController object should be different. So try something like this:
// SecondTable.m
#import "DetailViewController.h"
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// ricaviamo il link dell'elemento selezionato
NSString *link = [[elencoFeed objectAtIndex:indexPath.row] objectForKey: @"link"];
NSLog(@"%s: link=%@", _func_, link);
// ripiliamo il link da spazi, return e tabs
link = [link stringByReplacingOccurrencesOfString:@" " withString:@""];
link = [link stringByReplacingOccurrencesOfString:@"
" withString:@""];
link = [link stringByReplacingOccurrencesOfString:@" " withString:@""];
NSLog(@"%s: link=%@", _func_, link);
// apriamo la nuova vista
DetailViewController *dvController = [[DetailViewController alloc]
initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]];
dvController.detailItem = link;
[self.navigationController pushViewController:dvController animated:YES];
[dvController release];
I removed the alert view code to simplify things, and I would recommend leaving it out until you get the above, basic transition working correctly.
Are you presenting the alert view so the user can decide whether or not the detail view should be opened? If so, you might want something like this:
// SecondTable.m
#import "DetailViewController.h"
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// ricaviamo il link dell'elemento selezionato
// ripiliamo il link da spazi, return e tabs
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:link message:@"Your description"
delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
[alert show];
[alert release];
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
// apriamo la nuova vista
DetailViewController *dvController = [[DetailViewController alloc]
initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]];
dvController.detailItem = alertView.title;
[self.navigationController pushViewController:dvController animated:YES];
[dvController release];
The code which brings up the detail view is placed in the alert view delegate method because the main thread isn't suspended after [alert show]. Note the link which must be passed to the detail view has been saved in the 'title' property of the alert view, so it's already available in the alert view delegate method.
- Ray