OC 技术 UIPageViewController 小说的翻页效果(源码)

一直觉得自己写的不是技术而是情怀一个个的教程是自己这一路走来的痕迹。靠专业技能的成功是最具可复制性的希望我的这条路能让你们少走弯路希望我能帮你们抹去知识的蒙尘希望我能帮你们理清知识的脉络希望未来技术之巅上有你们也有我。(OC)小说翻页效果,UIPageViewController-代码事例视频解说效果前言整个页面的代码原理就是一个ViewController,上面添加了一个UIPageViewController,然后UIPageViewController上面在加一个ViewController,当手势翻下一页的时候就调用UIPageViewController的datasource返回NextViewController,当手势前下一页的时候就调用UIPageViewController的datasource返回BackViewController,定义属性//翻页控制器property(strong,nonatomic)UIPageViewController*pageViewController;property(strong,nonatomic)NSArray*pageData;//1-12数组 数据源方法//保存当前控制器的目的是为了,翻页的时候,用当前控制器拿到当前的页数,看看是否有下一页或者前一页property(nonatomic,strong)UIViewController*currentViewController;初始化 UIPageViewController初始化 UIPageViewController和数据源self.pageData[1,2,3,4,5,6,7,8,9,10,11,12];self.pageViewController[[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];self.pageViewController.delegateself;self.pageViewController.dataSourceself;self.pageViewController.doubleSidedNO;//用于确定页面是否具有双面显示。将显示前一页和后一页的内容NextViewController*startingViewController[selfviewControllerAtIndex:0];NSArray*viewControllers[startingViewController];[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:NULL];[selfaddChildViewController:self.pageViewController];[self.view addSubview:self.pageViewController.view];self.pageViewController.view.frameself.view.bounds;[self.pageViewController didMoveToParentViewController:self];// Add the page view controllers gesture recognizers to the book view controllers view so that the gestures are started more easily.self.view.gestureRecognizersself.pageViewController.gestureRecognizers;实现 UIPageViewController 的代理方法// 该方法用于告诉UIPageViewController在不同设备方向下例如横向或纵向如何设置页面的脊柱spine即两个页面之间的间隔。-(UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController*)pageViewController spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation{// 获取当前的视图控制器UIViewController*currentViewControllerself.pageViewController.viewControllers[0];// 将当前视图控制器放入数组中NSArray*viewControllers[currentViewController];// 设置UIPageViewController的视图控制器为当前视图控制器并指定方向为向前带有动画效果[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:NULL];// 设置UIPageViewController为双面显示self.pageViewController.doubleSidedYES;// 返回页面脊柱的位置为最小值returnUIPageViewControllerSpineLocationMin;}实现 UIPageViewController 的数据源方法#pragmamark-UIPageViewController dataSource methods// UIPageViewController数据源方法// 前一页-(UIViewController*)pageViewController:(UIPageViewController*)pageViewController viewControllerBeforeViewController:(UIViewController*)viewController{// 如果当前页是NextViewController类型if([viewController isKindOfClass:[NextViewController class]]){// 将当前视图控制器设置为当前控制器self.currentViewControllerviewController;// 创建BackViewController实例BackViewController*backViewController[[BackViewController alloc]init];// 更新BackViewController的视图控制器[backViewController updateWithViewController:viewController];returnbackViewController;}// 获取当前页的索引NSUInteger index[selfindexOfViewController:(NextViewController*)_currentViewController];// 如果当前页是第一页或者索引未找到则返回nilif((index0)||(indexNSNotFound)){returnnil;}// 索引减1返回相应索引的视图控制器index--;return[selfviewControllerAtIndex:index];}// 后一页-(UIViewController*)pageViewController:(UIPageViewController*)pageViewController viewControllerAfterViewController:(UIViewController*)viewController{// 如果当前页是NextViewController类型if([viewController isKindOfClass:[NextViewController class]]){// 将当前视图控制器设置为当前控制器self.currentViewControllerviewController;// 创建BackViewController实例BackViewController*backViewController[[BackViewController alloc]init];// 更新BackViewController的视图控制器[backViewController updateWithViewController:viewController];returnbackViewController;}// 获取当前页的索引NSUInteger index[selfindexOfViewController:(NextViewController*)_currentViewController];// 如果索引未找到则返回nilif(indexNSNotFound){returnnil;}// 索引加1index;// 如果索引等于数据源总数则返回nilif(index[self.pageData count]){returnnil;}// 返回相应索引的视图控制器return[selfviewControllerAtIndex:index];}定义两个私有方法传入当前页数,返回当前页数的控制器(包括内容)#pragmamark-私有方法-传入当前页数,返回当前页数的控制器(包括内容)-(NextViewController*)viewControllerAtIndex:(NSUInteger)index{if(([self.pageData count]0)||(index[self.pageData count])){returnnil;}NextViewController*dataViewController[NextViewController new];dataViewController.valueself.pageData[index];returndataViewController;}获取当前控制器的当前页数,用于滑动时判断是否有下一页和前一页#pragmamark-私有方法-获取当前控制器的当前页数,用于滑动时判断是否有下一页和前一页-(NSUInteger)indexOfViewController:(NextViewController*)viewController{return[self.pageData indexOfObject:viewController.value];}前一个控制器里面定义了一个方法,用于图片的内容翻页是的翻页效果-(void)updateWithViewController:(UIViewController*)viewController{self.backgroundImage[selfcaptureView:viewController.view];}// 捕捉指定视图的内容并返回 UIImage 对象-(UIImage*)captureView:(UIView*)view{// 获取视图的边界CGRect rectview.bounds;// 开始一个图形上下文UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);// 获取当前图形上下文CGContextRef contextUIGraphicsGetCurrentContext();// 创建仿射变换用于翻转图像CGAffineTransform transformCGAffineTransformMake(-1.0,0.0,0.0,1.0,rect.size.width,0.0);// 将仿射变换应用于当前图形上下文CGContextConcatCTM(context,transform);// 在当前图形上下文中渲染视图的层[view.layer renderInContext:context];// 从当前图形上下文中获取图像UIImage*imageUIGraphicsGetImageFromCurrentImageContext();// 结束图形上下文UIGraphicsEndImageContext();// 返回捕捉到的图像returnimage;}下一个控制器下一个控制器比较简单里面就一个label现实小说的内容-(void)viewDidLoad{[superviewDidLoad];self.view.backgroundColor[UIColor colorWithRed:241.0/255.0green:243.0/255.0blue:247.0/255.0alpha:1.0];//正页内容例如是一个label文本self.dataLabel[UILabel new];self.dataLabel.textself.value;self.dataLabel.textColor[UIColor blackColor];self.dataLabel.addTo(self.view).fnt(16).makeCons(^{make.center.equal.view(self.view);});}