如何在iOS> = 8.0中更改UIPageControl的位置? [英] How to change position of UIPageControl in iOS >=8.0?

问题描述

我有一个简单的UIPageViewController，它在页面底部显示默认的UIPageControl.我想知道是否可以修改UIPageControl的位置，例如在屏幕上方而不是底部. 我一直在环顾四周，只发现说我需要创建自己的UIPageControl的旧讨论. 使用iOS8和9，这件事更简单吗? 谢谢.

I have a simple UIPageViewController which displays the default UIPageControl at the bottom of the pages. I wonder if it's possible to modify the position of the UIPageControl, e.g. to be on top of the screen instead of the bottom. I've been looking around and only found old discussions that say I need to create my own UIPageControl. Is this thing simpler with iOS8 and 9? Thanks.

推荐答案

是的，您可以为此添加自定义页面控制器.

Yes, you can add custom page controller for that.

self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height - 50, self.view.frame.size.width, 50)]; // your position

[self.view addSubview: self.pageControl];

然后删除

- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController

和

- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController

然后添加另一个委托方法:

Then add another delegate method:

- (void)pageViewController:(UIPageViewController *)pageViewController willTransitionToViewControllers:(NSArray<UIViewController *> *)pendingViewControllers
 {
     PageContentViewController *pageContentView = (PageContentViewController*) pendingViewControllers[0];
     self.pageControl.currentPage = pageContentView.pageIndex;
 }

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