My app doesn't react at the didSelectRowAtIndex: method - ios

Question

i don't know what I am doing wrong, but my app is not working as expected. I have a tableview controller, and today I have included the didSelectRowAtIndexPath: method to open a detail view from the selected row, but when tapping on the row nothing happens. Here is my code, maybe you find the reason why it is not firing the detail view.
#import "RootViewController.h"
#import "AddToDoViewController.h"
#import "EditToDoViewController.h"
#interface RootViewController ()
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath;
#end
#implementation RootViewController
#synthesize fetchedResultsController, managedObjectContext,AddToDoButton;
#pragma mark -
#pragma mark View lifecycle
- (void)viewDidLoad {
[super viewDidLoad];
[self setTitle:#"Today"];
[[self navigationItem] setRightBarButtonItem:[self editButtonItem]];
NSError *error = nil;
if (![[self fetchedResultsController] performFetch:&error])
{
NSLog(#"Unresolved error %#, %#", error, [error userInfo]);
abort();
}
}
- (void) viewWillAppear:(BOOL)animated{
NSError *error = nil;
if (![[self fetchedResultsController] performFetch:&error])
{
NSLog(#"Unresolved error %#, %#", error, [error userInfo]);
abort();
}
[self.tableView reloadData];
}
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath
{
NSManagedObject *managedObject = [fetchedResultsController objectAtIndexPath:indexPath];
[[cell textLabel] setText:[[managedObject valueForKey:#"thingName"] description]];
[[cell detailTextLabel] setText:[[managedObject valueForKey:#"thingDescription"] description]];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
cell.textLabel.textColor = [UIColor blueColor];
cell.textLabel.font = [UIFont fontWithName:#"Noteworthy" size:17.0f];
cell.detailTextLabel.font = [UIFont fontWithName:#"Noteworthy" size:15.0f];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
EditToDoViewController *detailViewController = [[EditToDoViewController alloc] initWithNibName:#"EditToDoViewController" bundle:nil];
NSManagedObject *selectedObject = [[self fetchedResultsController] objectAtIndexPath:indexPath];
detailViewController.selectedObject = selectedObject;
}
#pragma mark -
#pragma mark Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [[fetchedResultsController sections] count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
id <NSFetchedResultsSectionInfo> sectionInfo = [[fetchedResultsController sections] objectAtIndex:section];
return [sectionInfo numberOfObjects];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:#"Cell"] autorelease];
}
[self configureCell:cell atIndexPath:indexPath];
return cell;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete)
{
NSManagedObjectContext *context = [fetchedResultsController managedObjectContext];
[context deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]];
NSError *error = nil;
if (![context save:&error])
{
NSLog(#"Unresolved error %#, %#", error, [error userInfo]);
abort();
}
}
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}
- (void)tableView:(UITableView *)tableView
moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath
toIndexPath:(NSIndexPath *)destinationIndexPath;
{
NSMutableArray *things = [[fetchedResultsController fetchedObjects] mutableCopy];
// Grab the item we're moving.
NSManagedObject *thing = [[self fetchedResultsController] objectAtIndexPath:sourceIndexPath];
// Remove the object we're moving from the array.
[things removeObject:thing];
// Now re-insert it at the destination.
[things insertObject:thing atIndex:[destinationIndexPath row]];
// All of the objects are now in their correct order. Update each
// object's displayOrder field by iterating through the array.
int i = 0;
for (NSManagedObject *mo in things)
{
[mo setValue:[NSNumber numberWithInt:i++] forKey:#"displayOrder"];
}
[things release], things = nil;
[managedObjectContext save:nil];
}
#pragma mark -
#pragma mark Fetched results controller
- (IBAction)AddToDoAction:(id)sender {
AddToDoViewController *viewController = [[AddToDoViewController alloc] init];
[self presentViewController:viewController animated:YES completion:nil];
}
- (NSFetchedResultsController *)fetchedResultsController
{
if (fetchedResultsController) return fetchedResultsController;
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity =
[NSEntityDescription entityForName:#"FavoriteThing"
inManagedObjectContext:managedObjectContext];
[fetchRequest setEntity:entity];
NSSortDescriptor *sortDescriptor =
[[NSSortDescriptor alloc] initWithKey:#"displayOrder"
ascending:YES];
NSArray *sortDescriptors = [[NSArray alloc]
initWithObjects:sortDescriptor, nil];
[fetchRequest setSortDescriptors:sortDescriptors];
NSFetchedResultsController *aFetchedResultsController =
[[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest
managedObjectContext:managedObjectContext
sectionNameKeyPath:nil cacheName:#"ThingsCache"];
aFetchedResultsController.delegate = self;
[self setFetchedResultsController:aFetchedResultsController];
[aFetchedResultsController release];
[fetchRequest release];
[sortDescriptor release];
[sortDescriptors release];
return fetchedResultsController;
}
- (void)dealloc {
[fetchedResultsController release];
[managedObjectContext release];
[super dealloc];
}
#end
Here is my header file code:
#import <UIKit/UIKit.h>
#import <CoreData/CoreData.h>
#interface RootViewController : UITableViewController <NSFetchedResultsControllerDelegate> {
NSFetchedResultsController *fetchedResultsController;
NSManagedObjectContext *managedObjectContext;
}
#property (retain, nonatomic) IBOutlet UIBarButtonItem *AddToDoButton;
- (IBAction)AddToDoAction:(id)sender;
#property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController;
#property (nonatomic, retain) NSManagedObjectContext *managedObjectContext;
#end

Answer 1

EditToDoViewController *detailViewController = [[EditToDoViewController alloc] initWithNibName:#"EditToDoViewController" bundle:nil];
NSManagedObject *selectedObject = [[self fetchedResultsController] objectAtIndexPath:indexPath];
detailViewController.selectedObject = selectedObject;
[self.navigationController pushViewController:detailViewController animated:YES];
you forgot to push your view controller.