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 UIKitclass 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(width: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..
     
       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 ()
     
      {    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！