- (void)viewDidLoad

{

[super viewDidLoad];

[self createContentPages];// 初始化所有数据

// 设置UIPageViewController的配置项

NSDictionary *options =[NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:UIPageViewControllerSpineLocationMin]

forKey: UIPageViewControllerOptionSpineLocationKey];

// 实例化UIPageViewController对象，根据给定的属性

self.pageController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl

navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal

options: options];

[[_pageController view] setFrame:[[self view] bounds]];

}



1.UIPageViewControllerDataSource协议

该协议主要有两个方法：

- (UIViewController*)pageViewController:(UIPageViewController*)pageViewController viewControllerBeforeViewController:(UIViewController*)viewController;


- (UIViewController*)pageViewController:(UIPageViewController*)pageViewController viewControllerAfterViewController:(UIViewController*)viewController;


分别用来提供UIPageViewController对象的数据源,即UIPageViewController对象通过该方法来调度显示的内容。

_pageController.dataSource = self;


2.初始化时，显示适当内容

MoreViewController *initialViewController =[self viewControllerAtIndex:0];// 得到第一页

NSArray *viewControllers =[NSArray arrayWithObject:initialViewController];

[_pageController setViewControllers:viewControllers

direction:UIPageViewControllerNavigationDirectionForward

animated:NO

completion:nil];

// 在页面上，显示UIPageViewController对象的View

[self addChildViewController:_pageController];

[[self view] addSubview:[_pageController view]];


3.准备好数据源

[self createContentPages];// 初始化所有数据