在每次翻页后调用方法调用UIPageViewController

Question

最初我认为这是一件非常简单的事情，但看起来并非如此。每当我的UIPageViewController中发生页面翻转时，我都需要向我的服务器发出一个简单的GET请求。我已尝试将方法用于以下方法进行服务器调用：

1

但是这些方法在每次翻页后都不会被一致地调用，因为UIPageViewController试图维护一个viewcontrollers的缓存。这个问题有解决方法吗？

Answer 1

您应该实施UIPageViewControllerDelegate方法

- (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed
{
    if (finished) {
       // in case you are sure that you shows only YourViewController 
       YourViewController *vc = (YourViewController *)pageViewController.viewControllers.lastObject;
       // decide what is the index of the controller based on your own logic and do what you want with it 
    }
}

希望它有所帮助！