swift和oc逻辑上都是一样的，只是写法不一样，可以使用一个view，也可以使用一个viewController，两种都可以的，使用view注意初始化的时候给他一个frame，vc的话，直接在本控制器里面写控制即可！
1，创建一个vc，然后在里面初始化一个scrollview，升值contentsize为3 * 页面宽度，然后添加图片，最后可以实现相应的代理方法，判断最后是点击进入主页，还是滑动
具体代码如下：
import UIKit class hDisplayViewController: UIViewController,UIScrollViewDelegate { //页面数量 var numOfPages = 3 override func viewDidLoad() { super.viewDidLoad() let frame = self.view.bounds //scrollView的初始化 let scrollView = UIScrollView() scrollView.frame = self.view.bounds scrollView.delegate = self //为了能让内容横向滚动，设置横向内容宽度为3个页面的宽度总和 scrollView.contentSize = CGSize(frame.size.width * CGFloat(numOfPages), height:frame.size.height) print("(frame.size.width*CGFloat(numOfPages)),(frame.size.height)") scrollView.isPagingEnabled = true scrollView.showsHorizontalScrollIndicator = false scrollView.showsVerticalScrollIndicator = false scrollView.scrollsToTop = false for i in 0..<numOfPages{ let imgfile = "bg(Int(i+1)).png" print(imgfile) let image = UIImage(named:"(imgfile)") let imgView = UIImageView(image: image) imgView.frame = CGRect(x:frame.size.width*CGFloat(i), y:CGFloat(0), frame.size.width, height:frame.size.height) scrollView.addSubview(imgView) } scrollView.contentOffset = CGPoint.zero self.view.addSubview(scrollView) } func scrollViewDidScroll(_ scrollView: UIScrollView) { print("scrolled:(scrollView.contentOffset)") let twidth = CGFloat(numOfPages-1) * self.view.bounds.size.width //如果在最后一个页面继续滑动的话就会跳转到主页面 if scrollView.contentOffset.x > twidth { // let mainStoryboard = UIStoryboard(name:"Main", bundle:nil) // let viewController = mainStoryboard.instantiateInitialViewController() // self.present(MainVC(), animated: true, completion: nil) let rootVC = UIApplication.shared.delegate as! AppDelegate
rootVC.window?.rootViewController = MainVC() } } }
2，在appdelegate里面写如下代码，判断是否第一次安装，
//这里判断是否第一次启动APP if (!(UserDefaults.standard.bool(forKey: "everLaunched"))) { UserDefaults.standard.set(true, forKey:"everLaunched") let guideViewController = hDisplayViewController() self.window!.rootViewController=guideViewController; print("guideview launched!") }
如下图：
这样就完成了！
下面分享一个oc版的：
.h
@interface hDisplayView : UIView
.m ：注意实现代理方法，判断偏移量或者其他的都行，因为是view，也可以添加手机或者按钮（建议frame是全屏幕大小的），然后实现响应事件隐藏就行了！
#import "hDisplayView.h" @interface hDisplayView ()<UIScrollViewDelegate> { UIScrollView *_bigScrollView; NSMutableArray *_imageArray; UIPageControl *_pageControl; } @end @implementation hDisplayView -(instancetype)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { _imageArray = [@[@"闪屏1.png",@"闪屏2.png", @"闪屏3.png",@"闪屏4.png"]mutableCopy]; // _imageArray = [NSMutableArray arrayWithObjects:@"闪屏1.png",@"闪屏2.png", @"闪屏3.png",@"闪屏4.png", nil]; UIScrollView *scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, MainScreen_width, MainScreen_height)]; scrollView.contentSize = CGSizeMake((_imageArray.count + 1)*MainScreen_width, MainScreen_height); //设置反野效果，不允许反弹，不显示水平滑动条，设置代理为自己 scrollView.pagingEnabled = YES;//设置分页 scrollView.bounces = NO; scrollView.showsHorizontalScrollIndicator = NO; scrollView.delegate = self; [self addSubview:scrollView]; _bigScrollView = scrollView; for (int i = 0; i < _imageArray.count; i++) { UIImageView *imageView = [[UIImageView alloc]init]; imageView.frame = CGRectMake(i * MainScreen_width, 0, MainScreen_width, MainScreen_height); UIImage *image = [UIImage imageNamed:_imageArray[i]]; imageView.image = image; [scrollView addSubview:imageView]; } UIPageControl *pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(MainScreen_width/2, MainScreen_height - 60, 0, 40)]; pageControl.numberOfPages = _imageArray.count; pageControl.backgroundColor = [UIColor clearColor]; [self addSubview:pageControl]; _pageControl = pageControl; //添加手势 UITapGestureRecognizer *singleRecognizer; singleRecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleSingleTapFrom)]; singleRecognizer.numberOfTapsRequired = 1; [scrollView addGestureRecognizer:singleRecognizer]; } return self; } -(void)handleSingleTapFrom { if (_pageControl.currentPage == 3) { self.hidden = YES; } } -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { if (scrollView == _bigScrollView) { CGPoint offSet = scrollView.contentOffset; _pageControl.currentPage = offSet.x/(self.bounds.size.width);//计算当前的页码 [scrollView setContentOffset:CGPointMake(self.bounds.size.width * (_pageControl.currentPage), scrollView.contentOffset.y) animated:YES]; } if (scrollView.contentOffset.x == (_imageArray.count) *MainScreen_width) { self.hidden = YES; } }
调用：
if (![[NSUserDefaults standardUserDefaults] boolForKey:@"everLaunched"]) { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"everLaunched"]; [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"firstLaunch"]; } else{ [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"firstLaunch"]; } if ([[NSUserDefaults standardUserDefaults] boolForKey:@"firstLaunch"]) { // 这里判断是否第一次 hDisplayView *hvc = [[hDisplayView alloc]initWithFrame:CGRectMake(0, 0, MainScreen_width, MainScreen_height)]; [self.window.rootViewController.view addSubview:hvc]; [UIView animateWithDuration:0.25 animations:^{ hvc.frame = CGRectMake(0, 0, MainScreen_width, MainScreen_height); }]; }
然后就可以了！
比较简单，只在此记录下！