How to dismissing multiple view controllers? - objective-c

Question

I have a storyboard with 3 view controllers: QuestionsTableViewController, QuestionViewController and AnswerViewController
For all intensive purposes, QuestionsTableViewController is basically my main menu. it has a selection of topics which when selected populate a question label in QuestionViewController which is then segued to.
The user enters his/her answer in a UITextField and hits a submit button causing a modal segue to the AnswerViewController which has a label that returns either a correct or incorrect message to the user based on a comparison of their answer to the coded correct answer. This final View Controller also has a button (back to menu) that when clicked should take the user back to the QuestionsTableViewController (i.e. my menu).
This last part (the returning to the menu) is where I am having problems.
I can dismiss the AnswerViewController multiple ways, but I cant figure out what I need to do to dismiss the QuestionViewController as part of this same button press.
I am including snipets of my QuestionViewController and AnswerViewController classes below.
QuestionViewController.m
#import "QuestionViewController.h"
#import "AnswerViewController.h"
#interface QuestionViewController ()
#end
#implementation QuestionViewController
#synthesize currentQuestionDisplay;
#synthesize userAnswerTextField;
#synthesize currentQuestion;
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
AnswerViewController *avc = [segue destinationViewController];
[avc setCurrentQuestion:currentQuestion];
[avc setUserAnswer:[userAnswerTextField text]];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.currentQuestionDisplay setText:[currentQuestion question]];
// Do any additional setup after loading the view.
}
- (void)viewDidUnload
{
[self setCurrentQuestionDisplay:nil];
[self setUserAnswerTextField:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (IBAction)dismissKeyboard:(id)sender {
[userAnswerTextField resignFirstResponder];
}
- (void)dimissThisVC
{
[self dismissViewControllerAnimated:YES completion:^(void){}];
}
#end
AnswerViewController.m
#import "AnswerViewController.h"
#import "QuestionViewController.h"
#interface AnswerViewController ()
#end
#implementation AnswerViewController
#synthesize displayCurrentAnswer;
#synthesize currentQuestion;
#synthesize userAnswer;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
if([userAnswer isEqualToString:currentQuestion.answer]) {
[self.displayCurrentAnswer setText:#"You are correct!"];
}
else {
[self.displayCurrentAnswer setText:#"You are wrong!"];
}
// Do any additional setup after loading the view.
}
- (void)viewDidUnload
{
[self setDisplayCurrentAnswer:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (IBAction)dismissAnswerVC:(id)sender {
[[self presentingViewController]
dismissViewControllerAnimated:YES
completion:^(void){ }];
}
#end

Answer 1

When you dismiss the modal view, in the completion block have this code:
[self.navigationController popViewControllerAnimated:YES];
Or if you want to go to the top most controller:
[self.navigationController popToRootViewControllerAnimated:YES];

Answer 2

in an effort to complete this post for others who may reference it, i am reposting user523234's answer here:
In the prepareForSegue method, you missed this line:
avc.delegate = self;
hopefully this can help someone else who has fallen into the same hole that i was in.