iOS swift 启动页加载广告(图片广告+视频广告)

一般app在启动的时候都会有广告页，广告页用来加载自己的或者第三方的广告，广告的展示形式也多种多样，最近在看swift相关的东西，这里将提供支持加载图片广告和视频广告的解决方案

思路：
我们知道在加载启动页广告的时候，都需要将内容下载下来才可以正常加载出来(要不然一边启动一边加载，如果网速比较慢，可能时间都过了，图片或者视频仍然没有加载出来),所有一般加载图片需要事先把图片内容或者视频内容缓存在本地，下一次打开app的时候，查询上一次下载的内容并显示出来，同时调用服务端接口将本次的广告内容缓存起来，以供下次启动使用。由于需要显示的广告内容不确定性(图片或者视频)，所以需要服务端来控制，将服务端返回的json转换成model并缓存在本地,josn中包显示类型(图片、视频还是其他),内容下载地址(图片或者视频下载地址),内容点击后是否需要跳转，跳转的链接等等信息，下次启动的时候查询model,并根据内容进行加载和跳转

关于显示：
图片显示这一块比较简单，直接将整张图片显示在视图中即可，给图片添加tap事件，这样当用户点击时以便可以跳转到指定的位置
视频显示这一块使用AVFoundation中的avplayer，关于avplayer需要注意的是，其切换到后台，在进入前台的时候容易导致视频暂停，我这里的解决方案是添加applicationDidBecomeActive代理，这样当app从后台切换到前台时，捕捉到这个事件，并发送通知让avplayer继续播放

图片广告 视频广告

更多详细内容请参考代码
appDelegate.swift

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        self.window = UIWindow(frame: UIScreen.main.bounds)
        self.window?.backgroundColor = .white
        //设置rootViewController
        self.window?.rootViewController = ViewController()
        //设置launchView
        _ = LaunchView(frame: (window?.bounds)!)
        self.window?.makeKeyAndVisible()
        return true
    }

    //MARK:- 后台切换到前台
    func applicationDidBecomeActive(_ application: UIApplication) {
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: "appBecomeActive"), object: nil)
    }
}

LaunchView.swift

import UIKit
import AVFoundation

class LaunchView: UIView {
    
    var timer:Timer!
    var interval:Int = 5
    
    lazy var imgView: UIImageView = {
        let imgView = UIImageView()
        imgView.isUserInteractionEnabled = true
        let gesture = UITapGestureRecognizer.init(target: self, action: #selector(imgTouchAction))
        gesture.numberOfTouchesRequired = 1
        imgView.addGestureRecognizer(gesture)
        return imgView
    }()
    
    lazy var skipBtn:UIButton = {
        let skipBtn = UIButton()
        skipBtn.backgroundColor = UIColor(white: 0, alpha: 0.1)
        skipBtn.setTitle("跳过广告(interval)s", for: .normal)
        skipBtn.setTitleColor(.white, for: .normal)
        skipBtn.titleLabel?.font = .systemFont(ofSize: 12)
        skipBtn.layer.cornerRadius = 15
        skipBtn.layer.masksToBounds = true
        skipBtn.addTarget(self, action: #selector(dismiss), for: .touchUpInside)
        return skipBtn
    }()
    
    fileprivate var playItem:AVPlayerItem{
        get{
            //视频路径
            guard let path = Bundle.main.path(forResource: "test", ofType: "mp4") else {
                fatalError("视频路径出错")
            }
            let url = URL(fileURLWithPath: path)
            let playItem = AVPlayerItem(url: url)
            return playItem
        }
    }
    
    fileprivate lazy var player: AVPlayer = {
        let player = AVPlayer(playerItem:playItem)
        player.actionAtItemEnd = .pause
        //设置播放完成后发送通知
        NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidPlayToEndTimeNotification(noti:)), name: .AVPlayerItemDidPlayToEndTime, object: nil)
        return player
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        //这里需要根据内容切换显示图片视图还是显示视频视图
        setupUI()
//        setupVideoUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
//        setupUI()
    }
    
    private func setupUI(){
        backgroundColor = .white
        
        addSubview(imgView)
        imgView.snp.makeConstraints { (make) in
            make.edges.equalToSuperview()
        }
        imgView.sd_setImage(with: URL(string: "http://img.zcool.cn/community/01e3ee5a6f2aa8a801213466f492ba.JPG@2o.jpg"))
        
        guard let window = UIApplication.shared.delegate?.window else{
            dismiss()
            return;
        }
        window?.isHidden = false
        window?.addSubview(self)
        
        addSubview(skipBtn)
        skipBtn.snp.makeConstraints { (make) in
            make.top.equalToSuperview().offset(30)
            make.right.equalToSuperview().offset(-25)
            make.size.equalTo(CGSize( 80, height: 30))
        }
        //开启定时器
        startTimer()
    }
    
    @objc private func imgTouchAction(){
        //图片广告被点击，这里可以发送通知跳转到指定页面
        dismiss()
    }
    
    private func startTimer(){
        if timer == nil {
            timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(timerInterval), userInfo: nil, repeats: true)
        }
    }
    
    @objc private func timerInterval(){
        interval -= 1
        if interval <= 0 {
            interval = 0
            dismiss()
            return
        }
        skipBtn.setTitle("跳过广告(interval)s", for: .normal)
    }
    
    @objc private func dismiss(){
        if timer != nil {
            if timer.isValid {  //如果定时器开启状态，关闭定时器
                timer.invalidate()
            }
        }
        UIView.animate(withDuration: 0.5, animations: {
            //缩放
            self.imgView.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
            //渐隐
            self.alpha = 0
        }, completion: { Bool in
            self.removeFromSuperview()
        })
    }
    
    deinit {
        print("启动页移除")
        NotificationCenter.default.removeObserver(self)
    }
}

//MARK:- 视频相关
extension LaunchView{
    
    fileprivate func setupVideoUI(){
        backgroundColor = .white
        NotificationCenter.default.addObserver(self, selector: #selector(playVideos), name: NSNotification.Name(rawValue: "appBecomeActive"), object: nil)
        setupForAVplayerView()
        player.play()
        
        guard let window = UIApplication.shared.delegate?.window else{
            dismiss()
            return;
        }
        window?.isHidden = false
        window?.addSubview(self)
        
        //跳过广告
        skipBtn.setTitle("跳过广告", for: .normal)
        addSubview(skipBtn)
        skipBtn.snp.makeConstraints { (make) in
            make.top.equalToSuperview().offset(30)
            make.right.equalToSuperview().offset(-25)
            make.size.equalTo(CGSize( 80, height: 30))
        }
    }
    
    private func setupForAVplayerView(){
        let playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = bounds
        layer.addSublayer(playerLayer)
        let gesture = UITapGestureRecognizer(target: self, action: #selector(videoAdTouch))
        gesture.numberOfTapsRequired = 1
        addGestureRecognizer(gesture)
    }
    
    @objc private func playerItemDidPlayToEndTimeNotification(noti:Notification){
        player.pause()
        dismiss()
    }
    
    @objc private func videoAdTouch(){
        player.pause()
        //视频被点击 可以发送通知让进行跳转
        dismiss()
    }
    
    @objc private func playVideos(){
        player.play()
    }
}

这里需要注意代码中提供了2中视图样式，需要根据显示类型在这里切换样式

    override init(frame: CGRect) {
        super.init(frame: frame)
        //这里需要根据内容切换显示图片视图还是显示视频视图
        setupUI()
//        setupVideoUI()
    }

整个视图展示在window上，如果需要图片或者视频点击后需要跳转，可以通过发送通知，将点击的model通过通知的形势在rootViewController中注册通知，并接受通知和跳转
由于需要涉及到到接口调用，我这里没有写那么详细，代码中的图片和视频使用的是本地数据，具体json的存储过程可以根据实际情况自行拓展

转发请标记转发来源：https://www.cnblogs.com/qqcc1388/p/9894684.html