ios – UIPageControl – 如何使背景透明？

我正在使用UIPageControl並嘗試使背景透明.

UIPageControl *pageControl = [UIPageControl appearance];
pageControl.pageIndicatorTintColor = [UIColor lightGrayColor];
pageControl.currentPageIndicatorTintColor = [UIColor blackColor];
pageControl.backgroundColor = [UIColor blackColor];

有什麼建議麼？

試著

pageControl.backgroundColor = [UIColor clearColor];

沒有運氣.

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好吧,正如@ powerj1984和@daniellarsson所提到的,UIPageControl在位置和背景色方面似乎不可改變.

所以我決定把它移到UIViewController並建立一個UIPageControl和

@property (weak, nonatomic) IBOutlet UIPageControl *pageControl;

然後把它放在我的UIPageViewController的頂部,就像在viewDidLoad一樣

self.pageControl.numberOfPages = self.pageTitles.count;
[self.view addSubview:_pageControl.viewForBaselineLayout];

然後在viewControllerBeforeViewController和viewControllerAfterViewController中更新UIPageControl的索引

NSUInteger index = ((HomePageContentViewController*) viewController).pageIndex; 
self.pageControl.currentPage = index;

好吧,正如@ powerj1984和@daniellarsson所提到的,UIPageControl在位置和背景色方面似乎不可改變.

所以我決定把它移到UIViewController並建立一個UIPageControl和

@property (weak, nonatomic) IBOutlet UIPageControl *pageControl;

然後把它放在我的UIPageViewController的頂部,就像在viewDidLoad一樣

self.pageControl.numberOfPages = self.pageTitles.count;
[self.view addSubview:_pageControl.viewForBaselineLayout];

然後在viewControllerBeforeViewController和viewControllerAfterViewController中更新UIPageControl的索引

NSUInteger index = ((HomePageContentViewController*) viewController).pageIndex; 
self.pageControl.currentPage = index;