UIPageViewController强制重载ChildView控制器

Question

我在Root UIPageViewController中有一个滑块，需要将滑块值传递给子视图控制器。除了已经加载的子视图控制器之外，它适用于其他子视图控制器！

我在RootView中使用Slider进行滑块值更改我已调用 -

- (void)sliderValueChanged:(UISlider *)slider {
    fontValue = slider.value;
    DetailsVC *dataViewController  = [self viewControllerAtIndex:self.newsIndex storyboard:self.storyboard];
    [dataViewController refreshViewForFontSize:slider.value];
}

我有通常的UIPageViewController方法，它工作正常。问题是它只能在子ViewControllers

中调用ViewDid Load方法后才能工作

- (DetailsVC *)viewControllerAtIndex:(NSUInteger)index storyboard:(UIStoryboard *)storyboard {
    // Return the data view controller for the given index.
    if (([self.pageContent count] == 0) || (index >= [self.pageContent count])) {
        return nil;
    }
    DetailsVC *dataViewController      = [[DetailsVC alloc] init];
    dataViewController.fontValue       = fontValue;
    return dataViewController;
}

Answer 1

终于找到了解决方案

    DetailsVC *dataViewController      = [self viewControllerAtIndex:currentIndex-1 storyboard:self.storyboard];
    dataViewController.textColor = textColor;
    NSArray *viewControllers                    = @[dataViewController];
    [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

重新加载子视图控制器的当前方法是通过

获取它

  

setViewControllers：direction：animated：completion：

如果有人需要一个示例项目，我上传了它 https://github.com/bishalg/BGPageViewController