设置 IMA SDK

#import "ViewController.h"

@import AVFoundation;
ViewController.m

@interface ViewController () <IMAAdsLoaderDelegate, IMAAdsManagerDelegate>

/// Content video player.
@property(nonatomic, strong) AVPlayer *contentPlayer;

/// Play button.
@property(nonatomic, weak) IBOutlet UIButton *playButton;

/// UIView in which we will render our AVPlayer for content.
@property(nonatomic, weak) IBOutlet UIView *videoView;
ViewController.m

@implementation ViewController

// The content URL to play.
NSString *const kTestAppContentUrl_MP4 =
    @"https://storage.googleapis.com/gvabox/media/samples/stock.mp4";

// Ad tag
NSString *const kTestAppAdTagUrl = @"https://pubads.g.doubleclick.net/gampad/ads?"
  @"iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dlinear&"
  @"ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&"
  @"correlator=";

- (void)viewDidLoad {
  [super viewDidLoad];

  self.playButton.layer.zPosition = MAXFLOAT;

  [self setupAdsLoader];
  [self setUpContentPlayer];
}

#pragma mark Content Player Setup

- (void)setUpContentPlayer {
  // Load AVPlayer with path to our content.
  NSURL *contentURL = [NSURL URLWithString:kTestAppContentUrl_MP4];
  self.contentPlayer = [AVPlayer playerWithURL:contentURL];

  // Create a player layer for the player.
  AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.contentPlayer];

  // Size, position, and display the AVPlayer.
  playerLayer.frame = self.videoView.layer.bounds;
  [self.videoView.layer addSublayer:playerLayer];

  // Set up our content playhead and contentComplete callback.
  self.contentPlayhead = [[IMAAVPlayerContentPlayhead alloc] initWithAVPlayer:self.contentPlayer];
  [[NSNotificationCenter defaultCenter] addObserver:self
                                           selector:@selector(contentDidFinishPlaying:)
                                               name:AVPlayerItemDidPlayToEndTimeNotification
                                             object:self.contentPlayer.currentItem];
}

- (IBAction)onPlayButtonTouch:(id)sender {
  [self requestAds];
  self.playButton.hidden = YES;
}
ViewController.m

import AVFoundation
PlayerContainerViewController.swift

class PlayerContainerViewController: UIViewController, IMAAdsLoaderDelegate, IMAAdsManagerDelegate {
  static let contentURL = URL(
    string: "https://storage.googleapis.com/gvabox/media/samples/stock.mp4")!

  private var contentPlayer = AVPlayer(url: PlayerContainerViewController.contentURL)

  private lazy var playerLayer: AVPlayerLayer = {
    AVPlayerLayer(player: contentPlayer)
  }()
PlayerContainerViewController.swift

private lazy var videoView: UIView = {
  let videoView = UIView()
  videoView.translatesAutoresizingMaskIntoConstraints = false
  view.addSubview(videoView)

  NSLayoutConstraint.activate([
    videoView.bottomAnchor.constraint(
      equalTo: view.safeAreaLayoutGuide.bottomAnchor),
    videoView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
    videoView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
    videoView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
  ])
  return videoView
}()

// MARK: - View controller lifecycle methods

override func viewDidLoad() {
  super.viewDidLoad()

  videoView.layer.addSublayer(playerLayer)
  adsLoader.delegate = self

  NotificationCenter.default.addObserver(
    self,
    selector: #selector(contentDidFinishPlaying(_:)),
    name: .AVPlayerItemDidPlayToEndTime,
    object: contentPlayer.currentItem)
}

override func viewDidAppear(_ animated: Bool) {
  super.viewDidAppear(animated)
  playerLayer.frame = videoView.layer.bounds
}

override func viewWillTransition(
  to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator
) {
  coordinator.animate { _ in
    // do nothing
  } completion: { _ in
    self.playerLayer.frame = self.videoView.layer.bounds
  }
}

// MARK: - Public methods

func playButtonPressed() {
  requestAds()
}
PlayerContainerViewController.swift

// Set up our content playhead and contentComplete callback.
self.contentPlayhead = [[IMAAVPlayerContentPlayhead alloc] initWithAVPlayer:self.contentPlayer];
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(contentDidFinishPlaying:)
                                             name:AVPlayerItemDidPlayToEndTimeNotification
                                           object:self.contentPlayer.currentItem];
ViewController.m

- (void)contentDidFinishPlaying:(NSNotification *)notification {
  // Make sure we don't call contentComplete as a result of an ad completing.
  if (notification.object == self.contentPlayer.currentItem) {
    [self.adsLoader contentComplete];
  }
}
ViewController.m

NotificationCenter.default.addObserver(
  self,
  selector: #selector(contentDidFinishPlaying(_:)),
  name: .AVPlayerItemDidPlayToEndTime,
  object: contentPlayer.currentItem)
PlayerContainerViewController.swift

@objc func contentDidFinishPlaying(_ notification: Notification) {
  // Make sure we don't call contentComplete as a result of an ad completing.
  if notification.object as? AVPlayerItem == contentPlayer.currentItem {
    adsLoader.contentComplete()
  }
}
PlayerContainerViewController.swift

- (void)setupAdsLoader {
  self.adsLoader = [[IMAAdsLoader alloc] initWithSettings:nil];
  self.adsLoader.delegate = self;
}

- (void)requestAds {
  // Create an ad display container for ad rendering.
  IMAAdDisplayContainer *adDisplayContainer =
      [[IMAAdDisplayContainer alloc] initWithAdContainer:self.videoView
                                          viewController:self
                                          companionSlots:nil];
  // Create an ad request with our ad tag, display container, and optional user context.
  IMAAdsRequest *request = [[IMAAdsRequest alloc] initWithAdTagUrl:kTestAppAdTagUrl
                                                adDisplayContainer:adDisplayContainer
                                                   contentPlayhead:self.contentPlayhead
                                                       userContext:nil];
  [self.adsLoader requestAdsWithRequest:request];
}
ViewController.m

private func requestAds() {
  // Create ad display container for ad rendering.
  let adDisplayContainer = IMAAdDisplayContainer(
    adContainer: videoView, viewController: self, companionSlots: nil)
  // Create an ad request with our ad tag, display container, and optional user context.
  let request = IMAAdsRequest(
    adTagUrl: PlayerContainerViewController.adTagURLString,
    adDisplayContainer: adDisplayContainer,
    contentPlayhead: contentPlayhead,
    userContext: nil)

  adsLoader.requestAds(with: request)
}
PlayerContainerViewController.swift

- (void)adsLoader:(IMAAdsLoader *)loader adsLoadedWithData:(IMAAdsLoadedData *)adsLoadedData {
  // Grab the instance of the IMAAdsManager and set ourselves as the delegate.
  self.adsManager = adsLoadedData.adsManager;
  self.adsManager.delegate = self;
  // Create ads rendering settings to tell the SDK to use the in-app browser.
  IMAAdsRenderingSettings *adsRenderingSettings = [[IMAAdsRenderingSettings alloc] init];
  adsRenderingSettings.linkOpenerPresentingController = self;
  // Initialize the ads manager.
  [self.adsManager initializeWithAdsRenderingSettings:adsRenderingSettings];
}

- (void)adsLoader:(IMAAdsLoader *)loader failedWithErrorData:(IMAAdLoadingErrorData *)adErrorData {
  // Something went wrong loading ads. Log the error and play the content.
  NSLog(@"Error loading ads: %@", adErrorData.adError.message);
  [self.contentPlayer play];
}
ViewController.m

func adsLoader(_ loader: IMAAdsLoader, adsLoadedWith adsLoadedData: IMAAdsLoadedData) {
  // Grab the instance of the IMAAdsManager and set ourselves as the delegate.
  adsManager = adsLoadedData.adsManager
  adsManager?.delegate = self

  // Create ads rendering settings and tell the SDK to use the in-app browser.
  let adsRenderingSettings = IMAAdsRenderingSettings()
  adsRenderingSettings.linkOpenerPresentingController = self

  // Initialize the ads manager.
  adsManager?.initialize(with: adsRenderingSettings)
}

func adsLoader(_ loader: IMAAdsLoader, failedWith adErrorData: IMAAdLoadingErrorData) {
  if let message = adErrorData.adError.message {
    print("Error loading ads: \(message)")
  }
  contentPlayer.play()
}
PlayerContainerViewController.swift

- (void)adsManager:(IMAAdsManager *)adsManager didReceiveAdEvent:(IMAAdEvent *)event {
  // When the SDK notified us that ads have been loaded, play them.
  if (event.type == kIMAAdEvent_LOADED) {
    [adsManager start];
  }
}
ViewController.m

func adsManager(_ adsManager: IMAAdsManager, didReceive event: IMAAdEvent) {
  // When the SDK notifies us the ads have been loaded, play them.
  if event.type == IMAAdEventType.LOADED {
    adsManager.start()
  }
}
PlayerContainerViewController.swift

- (void)adsManager:(IMAAdsManager *)adsManager didReceiveAdError:(IMAAdError *)error {
  // Something went wrong with the ads manager after ads were loaded. Log the error and play the
  // content.
  NSLog(@"AdsManager error: %@", error.message);
  [self.contentPlayer play];
}
ViewController.m

func adsManager(_ adsManager: IMAAdsManager, didReceive error: IMAAdError) {
  // Something went wrong with the ads manager after ads were loaded.
  // Log the error and play the content.
  if let message = error.message {
    print("AdsManager error: \(message)")
  }
  contentPlayer.play()
}
PlayerContainerViewController.swift

- (void)adsManagerDidRequestContentPause:(IMAAdsManager *)adsManager {
  // The SDK is going to play ads, so pause the content.
  [self.contentPlayer pause];
}

- (void)adsManagerDidRequestContentResume:(IMAAdsManager *)adsManager {
  // The SDK is done playing ads (at least for now), so resume the content.
  [self.contentPlayer play];
}
ViewController.m

func adsManagerDidRequestContentPause(_ adsManager: IMAAdsManager) {
  // The SDK is going to play ads, so pause the content.
  contentPlayer.pause()
}

func adsManagerDidRequestContentResume(_ adsManager: IMAAdsManager) {
  // The SDK is done playing ads (at least for now), so resume the content.
  contentPlayer.play()
}
PlayerContainerViewController.swift