私は自分が達成しようとしていることについて少し困惑しています。画像の配列リストを含むデータ ソースを持つページ ビュー コントローラーがあります。実際には、ユーザーがめくることができるチュートリアルです。私がやろうとしているのは、最後のページをログイン画面にして、ユーザーが情報を入力してログインボタンを押すことができるようにすることです。ログイン ビュー コントローラーを配列に追加するのと同じくらい簡単だと思っていましたが、私がどれほど間違っていたか D: 試してみると、次のエラーが発生しました。
*キャッチされない例外 'NSInvalidArgumentException' が原因でアプリを終了します。理由: '-[UIViewController _isResizable]: 認識されないセレクターがインスタンス 0xa160660 に送信されました'
私は、頭を抱えようとしているだけで、これらすべてに慣れていない初心者であることをお詫びします。これが私のコードです（このサイトを実際に使用して達成されました）：
私のデータ ソース (ModelController.h)
#import <Foundation/Foundation.h>
@class DataViewController;
@interface ModelController : NSObject <UIPageViewControllerDataSource>
- (DataViewController *)viewControllerAtIndex:(NSUInteger)index storyboard:(UIStoryboard *)storyboard;
- (NSUInteger)indexOfViewController:(DataViewController *)viewController;`
@end
ModelController.m
#import "ModelController.h"
#import "DataViewController.h"
#import "LoginViewController.h"
@interface ModelController()
@property (readonly, strong, nonatomic) NSArray *pageData;
@end
@implementation ModelController
- (id)init
{
self = [super init];
if (self)
{
// Create the data model
_pageData = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:@"tutorial1.png"],
[UIImage imageNamed:@"tutorial2.png"],
[UIImage imageNamed:@"lastWishes.png"],
[UIImage imageNamed:@"todo.png"],
[UIImage imageNamed:@"web.png"],
(LoginViewController*)[[UIViewController alloc] init],
nil];
}
return self;
}
- (DataViewController *)viewControllerAtIndex:(NSUInteger)index storyboard:(UIStoryboard *)storyboard
{
// Return the data view controller for the given index.
if (([self.pageData count] == 0) || (index >= [self.pageData count]))
{
return nil;
}
// Create a new view controller and pass suitable data.
DataViewController *dataViewController = [storyboard instantiateViewControllerWithIdentifier:@"DataViewController"];
dataViewController.dataObject = self.pageData[index];
return dataViewController;
}
- (NSUInteger)indexOfViewController:(DataViewController *)viewController
{
// Return the index of the given data view controller.
// For simplicity, this implementation uses a static array of model objects and the view controller stores the model object; you can therefore use the model object to identify the index.
return [self.pageData indexOfObject:viewController.dataObject];
}
#pragma mark - Page View Controller Data Source
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger index = [self indexOfViewController:(DataViewController *)viewController];
if ((index == 0) || (index == NSNotFound)) {
return nil;
}
index--;
return [self viewControllerAtIndex:index storyboard:viewController.storyboard];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger index = [self indexOfViewController:(DataViewController *)viewController];
if (index == NSNotFound) {
return nil;
}
index++;
if (index == [self.pageData count]) {
return nil;
}
return [self viewControllerAtIndex:index storyboard:viewController.storyboard];
}
@end
親 (RootViewController.h)
#import <UIKit/UIKit.h>
@interface RootViewController : UIViewController <UIPageViewControllerDelegate>
@property (strong, nonatomic) UIPageViewController *pageViewController;
@end
RootViewController.m
#import "RootViewController.h"
#import "ModelController.h"
#import "DataViewController.h"
@interface RootViewController ()
@property (readonly, strong, nonatomic) ModelController *modelController;
@end
@implementation RootViewController
@synthesize modelController = _modelController;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Configure the page view controller and add it as a child view controller.
self.pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation:UIPageViewControllerNavigationOrientationVertical options:nil];
self.pageViewController.delegate = self;
DataViewController *startingViewController = [self.modelController viewControllerAtIndex:0 storyboard:self.storyboard];
NSArray *viewControllers = @[startingViewController];
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:NULL];
self.pageViewController.dataSource = self.modelController;
[self addChildViewController:self.pageViewController];
[self.view addSubview:self.pageViewController.view];
// Set the page view controller's bounds using an inset rect so that self's view is visible around the edges of the pages.
CGRect pageViewRect = self.view.bounds;
self.pageViewController.view.frame = pageViewRect;
[self.pageViewController didMoveToParentViewController:self];
// Add the page view controller's gesture recognizers to the book view controller's view so that the gestures are started more easily.
self.view.gestureRecognizers = self.pageViewController.gestureRecognizers;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (ModelController *)modelController
{
// Return the model controller object, creating it if necessary.
// In more complex implementations, the model controller may be passed to the view controller.
if (!_modelController) {
_modelController = [[ModelController alloc] init];
}
return _modelController;
}
#pragma mark - UIPageViewController delegate methods
/*
- (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating: (BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted: (BOOL)completed
{
}
*/
- (UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController *)pageViewController spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation
{
// Set the spine position to "min" and the page view controller's view controllers array to contain just one view controller. Setting the spine position to 'UIPageViewControllerSpineLocationMid' in landscape orientation sets the doubleSided property to YES, so set it to NO here.
UIViewController *currentViewController = self.pageViewController.viewControllers[0];
NSArray *viewControllers = @[currentViewController];
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];
self.pageViewController.doubleSided = NO;
return UIPageViewControllerSpineLocationMin;
}
@end
子 (DataViewController.h)
#import <UIKit/UIKit.h>
@interface DataViewController : UIViewController
@property (strong, nonatomic) id dataObject;
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@end
DataViewController.m
#import "DataViewController.h"
@interface DataViewController ()
@end
@implementation DataViewController
- (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)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void) viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
self.imageView.image = _dataObject;
}
@end
繰り返しますが、問題のコードは、ビュー コントローラーをデータ ソースに最後のページとして追加しようとしている場所です。
_pageData = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:@"tutorial1.png"],
[UIImage imageNamed:@"tutorial2.png"],
[UIImage imageNamed:@"lastWishes.png"],
[UIImage imageNamed:@"todo.png"],
[UIImage imageNamed:@"web.png"],
(LoginViewController*)[[UIViewController alloc] init],
nil];
実行時に認識されないセレクターエラーが発生します。私もこれを試しました：
- (id)init
{
self = [super init];
if (self)
{
LoginViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:@"LoginViewController"];
// Create the data model
_pageData = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:@"tutorial1.png"],
[UIImage imageNamed:@"tutorial2.png"],
[UIImage imageNamed:@"lastWishes.png"],
[UIImage imageNamed:@"todo.png"],
[UIImage imageNamed:@"web.png"],
viewController,
nil];
}
return self;
}
どんな提案も素晴らしいでしょう。ありがとう！！