问在应用程序的开头介绍
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Stack Overflow用户

提问于 2015-04-16 19:53:45

回答 2查看 4K关注 0票数 5

在一些应用程序中，它们有一个小的介绍，你可以通过不同的视图控制器，谈论它。例如: Evernote等。这个名字叫什么？关于如何做到这一点有什么好的指导吗？

ios

xcode

回答 2

Stack Overflow用户

发布于 2015-04-16 20:05:06

不，没有任何现成的控制器不可用，因为introduction.You需要实现UIScrollView并创建您的自定义视图并放入该scrollview中。

下面是介绍屏幕的不同github演示项目的列表。

希望这能帮上忙，

编码愉快。

票数 14

Stack Overflow用户

发布于 2015-04-16 21:34:26

您也可以使用UIPageViewController。

1.创建UIPageViewController实例

    self.pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll 
                                                              navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal 
                                                                            options:nil];
    self.pageViewController.frame = self.view.bounds;

2.实现其UIPageViewControllerDataSource协议

    self.pageViewController.dataSource = self;
    ....
    - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController 
          viewControllerBeforeViewController:(UIViewController *)viewController 
    {

       NSUInteger index = [(PageContentViewController *)viewController pageIndex]; // get any kind of index of the view controller to know its position
        // here I subclass UIViewController to hold the index

        if (index == 0) {
            return nil;
        }  

       // get the previous view controller
       return self.pages[--index]; // container of all your pages
    }


    - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
         // do the same as above but get the next view controller or nil if index >= [self.pages count]
     }

     - (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
        // how many items do we have
        return [self.pages count];
     }

     - (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController {
        // The selected item reflected in the page indicator.
        return 0;
     }

3.创建页面.

     self.pages = [[NSMutableArray alloc] init];
     for (NSUInteger i=0; i<10; i++) { // 10 pages
         PageContentViewController *page = [self.storyboard instantiateViewControllerWithIdentifier:@"PageContentViewController1"]; // you can also do it programmatically
         // subclass of UIViewController just to hold its page index and for unified style purpose
         page.pageIndex = i;
         [self.pages addObject:page];
     }

4.显示页面

     NSArray *viewControllers = [NSArray arrayWithObject:self.pages[0]];
     [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

     [self addChildViewController:self.pageViewController];
     [self.view addSubview:self.pageViewController.view];
     [self.pageViewController didMoveToParentViewController:self];

5.解雇

     [self.pageViewController.view removeFromSuperview];
     [self.pageViewController removeFromParentViewController];

当显示页面视图控制器时，要添加一些花哨的动画吗？

     CATransition *transition = [CATransition animation];
     transition.duration = 0.4;
     transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
     transition.type = kCATransitionPush;
     transition.subtype = kCATransitionFromTop;
     [self.pageViewController.view.layer addAnimation:transition forKey:kCATransition];