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UIPageViewController
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#import <UIKit/UIKit.h> | |
@interface MainContentViewController : UIViewController | |
@property (nonatomic) NSInteger index; | |
@end |
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#import "MainViewController.h" | |
@interface MainViewController () <UIPageViewControllerDataSource, UIPageViewControllerDelegate> | |
@end | |
@implementation MainViewController | |
{ | |
UIPageViewController *pageViewController; | |
UIPageControl *pageControl; | |
NSUInteger pageCount; | |
} | |
- (void)viewDidLoad | |
{ | |
[super viewDidLoad]; | |
pageCount = 8; | |
pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil]; | |
[pageViewController setViewControllers:@[[self viewControllerAtIndex:0]] direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil]; | |
pageViewController.dataSource = self; | |
pageViewController.delegate = self; | |
[self addChildViewController:pageViewController]; | |
[self.view addSubview:pageViewController.view]; | |
[pageViewController didMoveToParentViewController:self]; | |
} | |
- (UIViewController *)viewControllerAtIndex:(NSInteger)index | |
{ | |
if (index < 0 || index > pageCount-1) return nil; | |
UIViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:@"MainContentViewController"]; | |
[vc setValue:@(index) forKey:@"index"]; | |
vc.view.tag = index; | |
else vc; | |
} | |
- (void)pageViewController:(UIPageViewController *)pageViewCntr didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed | |
{ | |
NSInteger currentIndex = ((UIViewController *)pageViewController.viewControllers.firstObject).view.tag; | |
if (completed) pageControl.currentPage = currentIndex; | |
} | |
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController | |
{ | |
NSInteger index = ((MainContentViewController *)viewController).index; | |
if (index == NSNotFound || !index) return nil; | |
return [self viewControllerAtIndex:index-1]; | |
} | |
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController | |
{ | |
NSInteger index = ((MainContentViewController *)viewController).index; | |
if (index == NSNotFound || index == pageCount-1) return nil; | |
return [self viewControllerAtIndex:index+1]; | |
} |
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