UIPageViewController和故事板
我试图从storyboard中特别配置一个UIPageViewController:
TutorialPageViewController.h
#import <UIKit/UIKit.h>
@interface TutorialPageViewController : UIPageViewController <UIPageViewControllerDelegate, UIPageViewControllerDataSource>
@end
TutorialPageViewController.m
#import "TutorialPageViewController.h"
@interface TutorialPageViewController ()
@property (assign, nonatomic) NSInteger index;
@end
@implementation TutorialPageViewController
{
NSArray *myViewControllers;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.delegate = self;
self.dataSource = self;
[self didMoveToParentViewController:self];
UIStoryboard *tutorialStoryboard = [UIStoryboard storyboardWithName:@"TutorialStoryboard" bundle:[NSBundle mainBundle]];
UIViewController *tuto1 = [tutorialStoryboard instantiateViewControllerWithIdentifier:@"TutorialPageViewController_1"];
UIViewController *tuto2 = [tutorialStoryboard instantiateViewControllerWithIdentifier:@"TutorialPageViewController_2"];
myViewControllers = @[tuto1, tuto2, tuto1, tuto2];
self.index = 0;
[self setViewControllers:@[tuto1] direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
}
- (UIViewController *)viewControllerAtIndex:(NSUInteger)index {
return myViewControllers[index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
NSUInteger index = self.index;
if (index == 0) { return nil; }
// Decrease the index by 1 to return
index--;
return [self viewControllerAtIndex:index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
NSUInteger index = self.index;
index++;
if (index > [myViewControllers count]) { return nil; }
return [self viewControllerAtIndex:index];
}
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
// The number of items reflected in the page indicator.
return [myViewControllers count];
}
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController {
// The selected item reflected in the page indicator.
return 0;
}
@end
问题是...
2017答案..
现在, 只需使用Storyboard就很容易做到这一点。
这种“全屏滑动教程”在一段时间内很受欢迎,因此我在IntroPages
下面调用了这个类。
第1步,创建一个UIPageViewController的容器视图。
如果iOS新手,这是一个容器视图教程。
(注意:如果您不知道如何将容器视图更改为UIPageViewController,请向下滚动到该教程的“如何更改...”部分。
)
您可以将容器制作成任何你想要的形状 。 与任何容器视图一样,它可以是全屏幕或屏幕的一小部分 - 无论您想要什么。
第2步,
制作四个直观的视图控制器,它可以是任何你想要的东西 - 图像,文本,表格,任何东西。 (在这个例子中是紫色的)
请注意,他们只是坐在你的故事板上 ,不要将它们链接到任何东西。
第3步,您必须设置这四个页面的ID 。 “id1”,“id2”,“id4”,“id4”很好。
第4步,复制并粘贴! 这里是类IntroPages,
class IntroPages: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
var pages = [UIViewController]()
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
self.dataSource = self
let p1: UIViewController! = storyboard?.instantiateViewController(withIdentifier: "id1")
let p2: UIViewController! = storyboard?.instantiateViewController(withIdentifier: "id2")
let p3: UIViewController! = storyboard?.instantiateViewController(withIdentifier: "id3")
// etc ...
pages.append(p1)
pages.append(p2)
pages.append(p3)
// etc ...
setViewControllers([p1], direction: UIPageViewControllerNavigationDirection.forward, animated: false, completion: nil)
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController)-> UIViewController? {
let cur = pages.index(of: viewController)!
// if you prefer to NOT scroll circularly, simply add here:
// if cur == 0 { return nil }
let prev = abs((cur - 1) % pages.count)
return pages[prev]
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController)-> UIViewController? {
let cur = pages.index(of: viewController)!
// if you prefer to NOT scroll circularly, simply add here:
// if cur == (pages.count - 1) { return nil }
let nxt = abs((cur + 1) % pages.count)
return pages[nxt]
}
func presentationIndex(for pageViewController: UIPageViewController)-> Int {
return pages.count
}
}
(看看评论 - 根据您的喜好,有循环或线性分页的代码。)
这就是它的全部 - 你完成了。
您只需在故事板上设置过渡风格,
很可能你想要“滚动”,而不是另一个。
对于想要查看工作页面滚动(向前/向后)的人,
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [myViewControllers indexOfObject:viewController];
// get the index of the current view controller on display
if (currentIndex > 0)
{
return [myViewControllers objectAtIndex:currentIndex-1];
// return the previous viewcontroller
} else
{
return nil;
// do nothing
}
}
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [myViewControllers indexOfObject:viewController];
// get the index of the current view controller on display
// check if we are at the end and decide if we need to present
// the next viewcontroller
if (currentIndex < [myViewControllers count]-1)
{
return [myViewControllers objectAtIndex:currentIndex+1];
// return the next view controller
} else
{
return nil;
// do nothing
}
}
只需要通过EditOR添加到这个伟大的答案,如果您更喜欢“全方位”分页,那么以下是您的操作:仍然使用EditOR的相同技术
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [myViewControllers indexOfObject:viewController];
--currentIndex;
currentIndex = currentIndex % (myViewControllers.count);
return [myViewControllers objectAtIndex:currentIndex];
}
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [myViewControllers indexOfObject:viewController];
++currentIndex;
currentIndex = currentIndex % (myViewControllers.count);
return [myViewControllers objectAtIndex:currentIndex];
}
用UIPageViewController
类的Swift代码扩展Joe Blow的答案:
import UIKit
class MyPageViewController: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
var pages = [UIViewController]()
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
self.dataSource = self
let page1: UIViewController! = storyboard?.instantiateViewControllerWithIdentifier("page1")
let page2: UIViewController! = storyboard?.instantiateViewControllerWithIdentifier("page2")
pages.append(page1)
pages.append(page2)
setViewControllers([page1], direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)
}
func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {
let currentIndex = pages.indexOf(viewController)!
let previousIndex = abs((currentIndex - 1) % pages.count)
return pages[previousIndex]
}
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
let currentIndex = pages.indexOf(viewController)!
let nextIndex = abs((currentIndex + 1) % pages.count)
return pages[nextIndex]
}
func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int {
return pages.count
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
return 0
}
}
阅读更多关于使用UIPageViewController与容器视图和故事板设置。
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