Chaning UIPageControl的位置不起作用

时间:2017-08-16 14:01:12

标签: swift uipageviewcontroller uipagecontrol

我正在向UIPageViewController添加UIPageControle视图。我想以编程方式增加UIPageControler的高度。这是我的代码

//PageViewController
pageViewController.view.frame = bounds

// pageControl
self.pageControl.frame = CGRect(x: 0, y: 0, width: pageViewController.view.frame.width / 2, height: pageViewController.view.frame.height - 200)
self.pageControl.currentPageIndicatorTintColor = UIColor.orange
self.pageControl.pageIndicatorTintColor = UIColor.white
self.pageControl.numberOfPages = self.pages.count
self.pageControl.currentPage = initialPage
pageViewController.view.addSubview(self.pageControl)

UIPageControle仍位于UIPageViewController的中间和底部。即使我设置了随机值,如

self.pageControl.frame = CGRect(x: 0, y: 0, width: 300, height: 200)

UIpageController位置永远不会改变

1 个答案:

答案 0 :(得分:1)

如果要更改UIPageControl的位置。你必须写约束。我将该代码写入ViewDidLoad()

view.addSubview(pageControl)
        pageControl.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
        pageControl.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
        pageControl.heightAnchor.constraint(equalToConstant: 60).isActive = true
        pageControl.widthAnchor.constraint(equalToConstant: 30).isActive = true

我不认为你可以改变高度,但你可以创建自己的UIView或下载pods