Question

早上好，

我正在尝试创建一个用于实现页面视图控制器的新界面，但我做错了，因为它无法正常工作。我希望有人可以看到错误并帮助我，因为我有点困在这个问题上。

aupViewController.m

#import "aupViewController.h"
#import <FacebookSDK/FacebookSDK.h>
#import "SBJson.h"

@interface TutorialViewController ()

@end

@implementation TutorialViewController

- (void)viewDidLoad
{
    // Create the data model
    _pageTitles = @[@"Over 200 Tips and Tricks", @"Discover Hidden Features", @"Bookmark Favorite Tip", @"Free Regular Update"];
    _pageImages = @[@"page1.png", @"page2.png", @"page3.png", @"page4.png"];

    // Create page view controller
    self.pageViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageViewController"];
    self.pageViewController.dataSource = self;

    PageContentViewController *startingViewController = [self viewControllerAtIndex:0];
    NSArray *viewControllers = @[startingViewController];
    [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

    // Change the size of page view controller
    self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 30);

    [self addChildViewController:_pageViewController];
    [self.view addSubview:_pageViewController.view];
    [self.pageViewController didMoveToParentViewController:self];

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)startWalkthrough:(id)sender {
    PageContentViewController *startingViewController = [self viewControllerAtIndex:0];
    NSArray *viewControllers = @[startingViewController];
    [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionReverse animated:NO completion:nil];
}

- (PageContentViewController *)viewControllerAtIndex:(NSUInteger)index
{
    if (([self.pageTitles count] == 0) || (index >= [self.pageTitles count])) {
        return nil;
    }

    // Create a new view controller and pass suitable data.
    PageContentViewController *pageContentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageContentViewController"];
    pageContentViewController.imageFile = self.pageImages[index];
    pageContentViewController.titleText = self.pageTitles[index];
    pageContentViewController.pageIndex = index;

    return pageContentViewController;
}

#pragma mark - Page View Controller Data Source

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
{
    NSUInteger index = ((PageContentViewController*) viewController).pageIndex;

    if ((index == 0) || (index == NSNotFound)) {
        return nil;
    }

    index--;
    return [self viewControllerAtIndex:index];
}

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
    NSUInteger index = ((PageContentViewController*) viewController).pageIndex;

    if (index == NSNotFound) {
        return nil;
    }

    index++;
    if (index == [self.pageTitles count]) {
        return nil;
    }
    return [self viewControllerAtIndex:index];
}

- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController
{
    return [self.pageTitles count];
}

- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController
{
    return 0;
}

@end

aupViewController.h

#import <UIKit/UIKit.h>
#import <FacebookSDK/FacebookSDK.h>
#import "PageContentViewController.h"


@interface TutorialViewController : UIViewController <UIPageViewControllerDataSource>

- (IBAction)startWalkthrough:(id)sender;

@property (strong, nonatomic) UIPageViewController *pageViewController;

@property (strong, nonatomic) NSArray *pageTitles;

@property (strong, nonatomic) NSArray *pageImages;

@end


@interface aupViewController : UIViewController <FBLoginViewDelegate>

@property (weak, nonatomic) IBOutlet FBLoginView *loginButton;

@property (weak, nonatomic) IBOutlet UITextField *txtUsername;

@property (weak, nonatomic) IBOutlet UITextField *txtPassword;

- (IBAction)loginClicked:(id)sender;

- (IBAction)backgroundClick:(id)sender;

- (IBAction)textFieldReturn:(id)sender;


@end


@interface LoginViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *txtUsername;

@property (weak, nonatomic) IBOutlet UITextField *txtPassword;

@property (weak, nonatomic) IBOutlet UITextField *txtMail;

- (IBAction)registerClicked:(id)sender;

- (IBAction)backgroundClick:(id)sender;

- (IBAction)textFieldReturn:(id)sender;

@end



@interface MainViewController : UIViewController

@end

PageContentViewController.h

#import <UIKit/UIKit.h>

@interface PageContentViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIImageView *backgroundImageView;

@property (weak, nonatomic) IBOutlet UILabel *titleLabel;

@property NSUInteger pageIndex;

@property NSString *titleText;

@property NSString *imageFile;

@end

PageContentViewController.m

#import "PageContentViewController.h"

@interface PageContentViewController ()

@end

@implementation PageContentViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.backgroundImageView.image = [UIImage imageNamed:self.imageFile];
    self.titleLabel.text = self.titleText;

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

但是我收到了错误：

找不到TutorialViewController的接口声明，你的意思是LoginViewController吗？

为什么这不起作用？我非常感谢你的帮助。

提前致谢。

Answer 1

问题是我的一个文件中的路径错误。我纠正了，现在一切正常。谢谢你的帮助。

在iOS App xcode中创建新界面

1 个答案: