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Я пытаюсь переместить методы из делегата приложения и вместо этого использовать отдельный контроллер представления для соответствия протоколу. Старое приложение делегата:Как перенести методы из делегата приложения?
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.qnaire = [[VRQuestionnaire alloc] initWithFile:[[NSBundle mainBundle] pathForResource:@"set1"
ofType:@"json"]];
self.navController = (UINavigationController *)self.window.rootViewController;
[self prepareForQuestion:self.qnaire.firstQuestion animated:NO];
return YES;
}
/* Set up the question view controller with a question and push onto the nav stack
*/
- (void)prepareForQuestion:(VRQuestion *)question animated:(BOOL)animated;
{
VRQuestionViewController *qvc = (VRQuestionViewController *)[self.navController.storyboard instantiateViewControllerWithIdentifier:@"QuestionViewController"];
qvc.delegate = self;
qvc.question = question;
[self.navController pushViewController:qvc animated:animated];
}
/* Delegate that gets called every time a question is answered. This loads the next question and pushes it onto the nav stack.
It also pushes a pointer to the question and result to a linked-list called firstAnswer->nextAnswer->nextAnswer, etc.
When the next question returns nil we know we've finished as there are no more questions and log linked-list to console.
*/
- (void)questionViewController:(VRQuestionViewController *)controller didAnswerQuestion:(VRQuestion *)question withResult:(BOOL)result
{
VRQuestion *nextQuestion = nil;
if (result == YES) {
nextQuestion = question.nextYesQuestion;
} else if (result == NO) {
nextQuestion = question.nextNoQuestion;
}
[self.qnaire pushAnswerResult:result forQuestion:question];
// Handle no more questions
if(nextQuestion) {
[self prepareForQuestion:nextQuestion animated:YES];
} else {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Complete"
message:@"You completed the questionnaire"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
[self.qnaire logAnswers];
}
}
И я пытаюсь перенести эти методы в InitialViewController, но кнопка не делает ничего?
@implementation InitialViewController
- (IBAction)buttonPress:(UIButton *)sender {
self.qnaire = [[VRQuestionnaire alloc] initWithFile:[[NSBundle mainBundle] pathForResource:@"set1"
ofType:@"json"]];
//self.navController = (UINavigationController *)self.window.rootViewController;
[self prepareForQuestion:self.qnaire.firstQuestion animated:NO];
}
Заранее спасибо.
кнопкаInitialViewController должен вызвать VRQuestionViewController (ниже)
@interface VRQuestionViewController()
@end
@implementation VRQuestionViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
self.label.text = self.question.text;
self.title = [self.question.identifier uppercaseString];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)yesPressed:(id)sender
{
if (self.delegate != nil) {
if ([self.delegate respondsToSelector:@selector(questionViewController:didAnswerQuestion:withResult:)]) {
[self.delegate questionViewController:self didAnswerQuestion:self.question withResult:YES];
}
}
}
- (IBAction)noPressed:(id)sender
{
if (self.delegate != nil) {
if ([self.delegate respondsToSelector:@selector(questionViewController:didAnswerQuestion:withResult:)]) {
[self.delegate questionViewController:self didAnswerQuestion:self.question withResult:NO];
}
}
}
@end
Мой текущий AppDelegate:
#import <UIKit/UIKit.h>
#import "VRQuestionnaire.h"
#import "VRQuestionViewController.h"
@interface VRAppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) VRQuestionnaire *qnaire;
@end
#import "VRAppDelegate.h"
#import "VRQuestionViewController.h"
@implementation VRAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.qnaire = [[VRQuestionnaire alloc] initWithFile:[[NSBundle mainBundle] pathForResource:@"set1"
ofType:@"json"]];
return YES;
}
И InitialViewController:
#import "VRAppDelegate.h"
#import "VRQuestionViewController.h"
@implementation VRAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.qnaire = [[VRQuestionnaire alloc] initWithFile:[[NSBundle mainBundle] pathForResource:@"set1"
ofType:@"json"]];
return YES;
}
#import "InitialViewController.h"
@interface InitialViewController()
@end
@implementation InitialViewController
- (IBAction)buttonPress:(UIButton *)sender {
self.qnaire = [[VRQuestionnaire alloc] initWithFile:[[NSBundle mainBundle] pathForResource:@"set1"
ofType:@"json"]];
self.navController = (UINavigationController *)self.window.rootViewController;
[self prepareForQuestion:self.qnaire.firstQuestion animated:NO];
}
/* Set up the question view controller with a question and push onto the nav stack
*/
- (void)prepareForQuestion:(VRQuestion *)question animated:(BOOL)animated;
{
VRQuestionViewController *qvc = (VRQuestionViewController *)[self.navController.storyboard instantiateViewControllerWithIdentifier:@"QuestionViewController"];
qvc.delegate = self;
qvc.question = question;
[self.navController pushViewController:qvc animated:animated];
}
/* Delegate that gets called every time a question is answered. This loads the next question and pushes it onto the nav stack.
It also pushes a pointer to the question and result to a linked-list called firstAnswer->nextAnswer->nextAnswer, etc.
When the next question returns nil we know we've finished as there are no more questions and log linked-list to console.
*/
- (void)questionViewController:(VRQuestionViewController *)controller didAnswerQuestion:(VRQuestion *)question withResult:(BOOL)result
{
VRQuestion *nextQuestion = nil;
if (result == YES) {
nextQuestion = question.nextYesQuestion;
} else if (result == NO) {
nextQuestion = question.nextNoQuestion;
}
[self.qnaire pushAnswerResult:result forQuestion:question];
// Handle no more questions
if(nextQuestion) {
[self prepareForQuestion:nextQuestion animated:YES];
} else {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Complete"
message:@"You completed the questionnaire"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
[self.qnaire logAnswers];
}
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
Have CTR L-перетаскивание из навигационного контроллера для создания контроллера корневого контроллера InitialViewController. CTRL-перетаскивается из кнопки в VRQuestionViewController.
В тренажере при нажатии кнопки VRQuestionViewController отображаются без какого-либо вопроса или ответа на Y/N
К сожалению я сделать реальные свинья ухо, если это!
Почему контроллер вида? Это больше похоже на то, что у вас должен быть вопрос или контролер вопросника. Предположительно, ваша текущая проблема заключается в том, что 'self.navController' равен нулю? – Wain
точно self.navController - это нуль .. я застрял! – Hegar20
Является ли 'InitialViewController' контроллером корневого представления в вашем контроллере навигации? – Wain