Pushing a view controller from a tableview controller doesnt work - iphone

Question

I have setup a table view controller and connected a sub view so when I click on the rows the new subview appears. I followed a few tutorials step by step, but from some reason, nothing comes up when I click on the rows (the row is being selected though).
Here is my main view controller:
#interface TableViewsViewController : UIViewController <UITableViewDelegate, UITableViewDataSource> {
IBOutlet UITableView *tblSimpleTable;
IBOutlet UINavigationBar *navBar;
NSArray *arryData;
NSMutableArray *listOfItems;
}
#property (nonatomic, retain) IBOutlet UITableView *tblSimpleTable;
#property (nonatomic, retain) IBOutlet UINavigationBar *navBar;
#property (nonatomic, retain) NSArray *arryData;
#property (nonatomic, retain) NSMutableArray *listOfItems;
.m (relevant portions)
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
}
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:#"Computers"];
NSString *cellValue = [array objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *) indexPath
{
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:#"Computers"];
NSString *selectedCountry = [array objectAtIndex:indexPath.row];
//Initialize the detail view controller and display it.
DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:#"DetailView" bundle:[NSBundle mainBundle]];
dvController.selectedComputer = selectedCountry;
[self.navigationController pushViewController:dvController animated:YES];
dvController = nil;
}
And the subview controller:
.h
#interface DetailViewController : UIViewController {
IBOutlet UILabel *lblText;
NSString *selectedComputer;
}
#property (nonatomic, retain) IBOutlet UILabel *lblText;
#property (nonatomic, retain) NSString *selectedComputer;
#end
.m
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
//Display the selected country.
lblText.text = selectedComputer;
//Set the title of the navigation bar
self.navigationItem.title = #"Selected Computer";
}
I am pretty sure everything is well connected in IB.
Thanks for any help!

Answer 1

Is the table view inside a navigation controller. You can put a breakpoint on
[self.navigationController pushViewController:dvController animated:YES];
and take a loot at the self.navigationController property. if it is nil, you will not be able to push anything onto it but it will not give you an error as sending a message to nil will merely return nil in most cases.

Answer 2

Might be a small over look. If you created your DetailedViewController from a template and you check to create a nib file for it, the nib file should have the same name as the .h and .m files. So check for the name of your nib class. It might should be:
DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
P.S. use self. here:
self.dvController = nil;
Otherwise you will leak.