【发布时间】：2013-08-26 06:24:27
【问题描述】：
我正在尝试从情节提要专门配置 UIPageViewController：
TutorialPageViewController.h
#import <UIKit/UIKit.h>
@interface TutorialPageViewController : UIPageViewController <UIPageViewControllerDelegate, UIPageViewControllerDataSource>
@end
TutorialPageViewController.m
#import "TutorialPageViewController.h"
@interface TutorialPageViewController ()
@property (assign, nonatomic) NSInteger index;
@end
@implementation TutorialPageViewController
{
NSArray *myViewControllers;
}
- (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.
self.delegate = self;
self.dataSource = self;
[self didMoveToParentViewController:self];
UIStoryboard *tutorialStoryboard = [UIStoryboard storyboardWithName:@"TutorialStoryboard" bundle:[NSBundle mainBundle]];
UIViewController *tuto1 = [tutorialStoryboard instantiateViewControllerWithIdentifier:@"TutorialPageViewController_1"];
UIViewController *tuto2 = [tutorialStoryboard instantiateViewControllerWithIdentifier:@"TutorialPageViewController_2"];
myViewControllers = @[tuto1, tuto2, tuto1, tuto2];
self.index = 0;
[self setViewControllers:@[tuto1] direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
}
- (UIViewController *)viewControllerAtIndex:(NSUInteger)index {
return myViewControllers[index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
NSUInteger index = self.index;
if (index == 0) { return nil; }
// Decrease the index by 1 to return
index--;
return [self viewControllerAtIndex:index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
NSUInteger index = self.index;
index++;
if (index > [myViewControllers count]) { return nil; }
return [self viewControllerAtIndex:index];
}
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
// The number of items reflected in the page indicator.
return [myViewControllers count];
}
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController {
// The selected item reflected in the page indicator.
return 0;
}
@end
问题是……
- 使用页面指示器可以很好地显示第一页。滑动时，
- 我可以正常看到第二页。
- 转换完成后，我会立即看到黑屏（页面指示器正确显示第 2 页）。没有用户 互动不再可用。
【问题讨论】：
-
这是我第一次看到 UIPageViewController 本身用于它自己的数据源和委托。似乎合乎逻辑，但我见过的每个教程都没有走这条路。希望你继续努力。
-
@BenjaminToueg，我很确定这里不需要“didMoveToParentViewController”。
-
如果您对 容器视图 - tutorial 感到满意，这个老问题基本上很简单
标签： ios uistoryboard uipageviewcontroller xcode-storyboard