导航栏中的页面指示器和标题 iOS 目标 C

Question

我想创建一个导航栏，其中我有一个pageControl以及导航栏中的标题，就像 Twitter iOS 应用程序包含的那样，我通过设置

self.navigationItem.Title = @"Home";

并通过创建UIPageControl实例并将其中心设置为导航栏的中心并使用UINavigationController's委托实现其导航检测来实现PageControl。但问题是页面控件和标题相互重叠。我怎样才能这样设置标题应该出现在页面顶部指示器上。这是定位pageControl的代码。

self.navigationController.delegate = self;  
CGSize navBarSize = self.navigationController.navigationBar.bounds.size;  
CGPoint origin = CGPointMake( navBarSize.width/2, navBarSize.height/2 );  
self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(origin.x, origin.y,
                                                                   0, 0)];  
[self.pageControl setNumberOfPages:3];  
[self.navigationController.navigationBar addSubview:self.pageControl];
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
int index = [self.navigationController.viewControllers indexOfObject:viewController];  
self.pageControl.currentPage = index;  }

Answer 1

我想

通了，两者(标题和页面控件(相互重叠，所以我只是更改了页面控件的 Y 轴和

self.navigationController.delegate = self;  
CGSize navBarSize = self.navigationController.navigationBar.bounds.size;  
CGPoint origin = CGPointMake( navBarSize.width/2, navBarSize.height/2 );  
self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(origin.x, origin.y+45,
                                                               0, 0)]; //Here added 45 to Y and it did the trick 
[self.pageControl setNumberOfPages:3];  
[self.navigationController.navigationBar addSubview:self.pageControl];
- (void)navigationController:(UINavigationController *)navigationController     willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
int index = [self.navigationController.viewControllers indexOfObject:viewController];  
self.pageControl.currentPage = index;  }