swift--添加新手引導頁

swift和oc邏輯上都是一樣的，只是寫法不一樣，可以使用一個view，也可以使用一個viewController，兩種都可以的，使用view注意初始化的時候給他一個frame，vc的話，直接在本控制器里面寫控制即可！

 

1，創建一個vc，然后在里面初始化一個scrollview，升值contentsize為3 * 頁面寬度，然后添加圖片，最后可以實現相應的代理方法，判斷最后是點擊進入主頁，還是滑動

具體代碼如下：

import UIKit

class hDisplayViewController: UIViewController,UIScrollViewDelegate {
    
    //頁面數量
    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
        //為了能讓內容橫向滾動，設置橫向內容寬度為3個頁面的寬度總和
        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..<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),
                                   width: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
        //如果在最后一個頁面繼續滑動的話就會跳轉到主頁面
        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里面寫如下代碼，判斷是否第一次安裝，

  //這里判斷是否第一次啟動APP
        if (!(UserDefaults.standard.bool(forKey: "everLaunched"))) {
            UserDefaults.standard.set(true, forKey:"everLaunched")
            let guideViewController = hDisplayViewController()
            self.window!.rootViewController=guideViewController;
            print("guideview launched!")
        }

如下圖：

這樣就完成了！

下面分享一個oc版的：

.h

@interface hDisplayView : UIView

.m ：注意實現代理方法，判斷偏移量或者其他的都行，因為是view，也可以添加手機或者按鈕（建議frame是全屏幕大小的），然后實現響應事件隱藏就行了！

#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 = [@[@"閃屏1.png",@"閃屏2.png", @"閃屏3.png",@"閃屏4.png"]mutableCopy];
        
//        _imageArray = [NSMutableArray arrayWithObjects:@"閃屏1.png",@"閃屏2.png", @"閃屏3.png",@"閃屏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);
        //設置反野效果，不允許反彈，不顯示水平滑動條，設置代理為自己
        scrollView.pagingEnabled = YES;//設置分頁
        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;
        
        //添加手勢
        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);//計算當前的頁碼
        [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;
        
    }
    
}

調用：

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"]) {
        // 這里判斷是否第一次
        
        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！

比較簡單，只在此記錄下！