[viewcontroller_name tableView:cellForRowAtIndexPath:]: unrecognized selector sent to instance 0x7b3a630' - iphone

Question

I am having an app which has a UITableViewController which is my settings page. I am pushing the UITableViewController with a presentModalViewController using self.navigationController (using storyboard ID). however each time I try to see that page, it's showing exception. After reading few posts I tried implementing two methods
- (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section
{
return 3;
}
- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [super tableView:tableView
cellForRowAtIndexPath:indexPath];
return cell;
}
**my .h File**
#interface Setting : UITableViewController<UITableViewDelegate,UITableViewDataSource>
I have done all UI settings in IB so I didn't change anything in above two implemented methods.
In mainviewcontroller from where I am pushing the view to UITableViewController, I am using the below code
Setting *nextController = [[self storyboard] instantiateViewControllerWithIdentifier:#"setting"];
[self presentModalViewController:nextController animated:YES];
Setting *dvc = [[Setting alloc] init];
[self.navigationController pushViewController:dvc animated:YES];
As I already set all UIs in IB why do I need to implement those methods? At least I can seen the view correctly.

Answer 1

It looks like you're trying to initialize the same viewController twice. You don't need to alloc] init] after you instantiateViewControllerWithIdentifier. At least, from my experience you don't. Try this:
Setting *nextController = [[self storyboard] instantiateViewControllerWithIdentifier:#"setting"];
[self.navigationController pushViewController:nextController animated:YES];
That will "push" the nextController with the storyBoardID of "setting" from the right into your existing NavigationController.
However, using my intuition, I believe you want to present a settings view modally, that has it's own NavigationController. In that case, try this code, which wraps the Settings ViewController into a NavigationController, and presents that whole thing modally, so you can navigate within settings:
Setting *nextController = [self.storyboard instantiateViewControllerWithIdentifier:#"setting"];
UINavigationController *navcont = [[UINavigationController alloc] initWithRootViewController:nextController];
navcont.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentViewController:navcont animated:YES completion:nil];
Alternatively, you could do all of this in the Storyboard itself. Select your settings view controller, and go to Editor Menu > Embed In... > Navigation Controller. Then make a segue from your button to the navigation controller that holds the settings controller. Set the segue to "Modal" and you're all done.