在 iOS 应用中添加插屏广告

您可通过使用 Audience Network，借助 Facebook 广告让 iOS 应用实现变现。插屏广告是可以在应用中显示的一种全屏广告。要投放这类广告单元，请参阅本指南。或者，如果您对其他类型的广告单元感兴趣，请参见可用的广告单元类型列表。

现在，我们来实现以下插屏广告版位。

第 1 步：加载并展示插屏广告视图

第 2 步：验证展示次数和点击量记录

第 3 步：不展示广告时如何调试

第 4 步：测试广告集成

第 1 步：加载并展示插屏广告视图

1. 根据 iOS 入门指南创建新项目后，导入 FBAudienceNetwork，声明 ViewController 执行 FBInterstitialAdDelegate 协议，并添加插屏广告单元的实例变量
   SwiftObjective-C

   import UIKit
   import FBAudienceNetwork
   
   class ViewController: UIViewController, FBInterstitialAdDelegate {
     private var interstitialAd: FBInterstitialAd?
   }

   #import <UIKit/UIKit.h>
   @import FBAudienceNetwork;
   
   @interface ViewController : UIViewController <FBInterstitialAdDelegate>
   @property (nonatomic, strong) FBInterstitialAd *interstitialAd;
   @end


2. 接下来，在视图控制器的 viewDidLoad 方法中实例化广告对象，并执行 interstitialAdDidLoad
   SwiftObjective-C

   override func viewDidLoad() {
     super.viewDidLoad()
   
     // Instantiate an InterstitialAd object.
     // NOTE: the placement ID will eventually identify this as your app. You can ignore it while you are testing
     // and replace it later when you have signed up.
     // While you are using this temporary code you will only get test ads and if you release
     // your code like this to the App Store your users will not receive ads (you will get a 'No Fill' error).
     let interstitialAd = FBInterstitialAd(placementID: "YOUR_PLACEMENT_ID")
     interstitialAd.delegate = self
   
     // For auto play video ads, it's recommended to load the ad at least 30 seconds before it is shown
     interstitialAd.load()
     
     self.interstitialAd = interstitialAd
   }
   
   func interstitialAdDidLoad(_ interstitialAd: FBInterstitialAd) {
     guard interstitialAd.isAdValid else {
       return
     }
     print("Ad is loaded and ready to be displayed")
     interstitialAd.show(fromRootViewController: self)
   }

   - (void)viewDidLoad 
   {
     [super viewDidLoad];
   
     // Instantiate an InterstitialAd object. 
     // NOTE: the placement ID will eventually identify this as your app. You can ignore it while you are testing 
     // and replace it later when you have signed up.
     // While you are using this temporary code you will only get test ads and if you release
     // your code like this to the App Store your users will not receive ads (you will get a 'No Fill' error).
     self.interstitialAd = [[FBInterstitialAd alloc] initWithPlacementID:@"YOUR_PLACEMENT_ID"];
   
     self.interstitialAd.delegate = self;
   
     // For auto play video ads, it's recommended to load the ad at least 30 seconds before it is shown
     [self.interstitialAd loadAd];
   }
   
   - (void)interstitialAdDidLoad:(FBInterstitialAd *)interstitialAd
   {
     NSLog(@"Ad is loaded and ready to be displayed");
   
     if (interstitialAd && interstitialAd.isAdValid) {
       // You can now display the full screen ad using this code:
       [interstitialAd showAdFromRootViewController:self];
     }
   }
   
   

3. YOUR_PLACEMENT_ID 中显示的编号为临时编号，仅供测试使用。

   若您在实时代码中使用此临时编号，您的用户便不会收到广告（他们会收到未填充错误）。您必须在测试之后返回此处，将临时编号换成实时版位编号。

   若想了解如何生成实时版位编号，请参阅 Audience Network 设置

   选择设备作为构建目标并运行上述代码后，您应该会看到如下结果：
   
   

第 2 步：验证展示次数和点击量记录

您可以添加以下任意函数，用于处理广告显示、用户点击或关闭广告的情况

func interstitialAdWillLogImpression(_ interstitialAd: FBInterstitialAd) {
  print("The user sees the ad")
  // Use this function as indication for a user's impression on the ad.
}

func interstitialAdDidClick(_ interstitialAd: FBInterstitialAd) {
  print("The user clicked on the ad and will be taken to its destination")
  // Use this function as indication for a user's click on the ad.
}

func interstitialAdWillClose(_ interstitialAd: FBInterstitialAd) {
  print("The user clicked on the close button, the ad is just about to close")
  // Consider to add code here to resume your app's flow
}

func interstitialAdDidClose(_ interstitialAd: FBInterstitialAd) {
  print("The user clicked on the close button, the ad is just about to close")
  // Consider to add code here to resume your app's flow
}

- (void)interstitialAdWillLogImpression:(FBInterstitialAd *)interstitialAd 
{
  NSLog(@"The user sees the ad");
  // Use this function as indication for a user's impression on the ad.
}

- (void)interstitialAdDidClick:(FBInterstitialAd *)interstitialAd
{
  NSLog(@"The user clicked on the ad and will be taken to its destination");
  // Use this function as indication for a user's click on the ad.
}

- (void)interstitialAdWillClose:(FBInterstitialAd *)interstitialAd
{
  NSLog(@"The user clicked on the close button, the ad is just about to close");
  // Consider to add code here to resume your app's flow
}

- (void)interstitialAdDidClose:(FBInterstitialAd *)interstitialAd
{
  NSLog(@"Interstitial had been closed");
  // Consider to add code here to resume your app's flow
}

第 3 步：在不展示广告时执行调试

在视图控制器实施文件中添加并实现以下函数，以处理广告加载失败问题

func interstitialAd(_ interstitialAd: FBInterstitialAd, didFailWithError error: Error) {
  print("Interstitial ad failed to load with error: \(error.localizedDescription)")
}

- (void)interstitialAd:(FBInterstitialAd *)interstitialAd didFailWithError:(NSError *)error
{
  NSLog(@"Interstitial ad failed to load with error: %@", error);
}