如何在时间间隔后翻页？

Question

我在Xcode中使用模板Page-Based Application（RootViewController，DataViewController,ModelController）。我想在时间间隔后翻页。我该怎么做？

代码翻转翻页

- (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]; 
} 

Answer 1

我希望这将帮助你

HomeViewController *homeVC = [[HomeViewController alloc] init]; 
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:homeVC]; 
[UIView transitionFromView:self.view toView:nav.view duration:0.5 options:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOL finished) { 
            //Action to Implement 
          }]; 

[或]

HomeViewController *homeVC = [[HomeViewController alloc] init]; 
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:homeVC]; 
nav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
nav.modalPresentationStyle = UIModalPresentationFormSheet; 
[[self navigationController] presentViewController:nav animated:YES completion:^{ 
       //Action to implement 
      }]; 

Answer 2

后时间间隔使用dispatch_after要翻转。

// define fromViewController depend on your previous code 
UIViewController *toViewController = [self pageViewController:pageViewController viewControllerAfterViewController:viewController]; 
// or set another toViewController depend on your previous code 

NSTimeInterval interval = 5; //in seconds 
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(interval * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ 
    [UIView transitionFromView:fromViewController.view toViewController:toViewController.view duration:0.4 options:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOL finished) { 
     //completion block 
    }]; 
});