iPhone X 廣告顯示

本指南說明如何運用程式設計最佳做法，在 iPhone X 上正確呈現廣告。

必要條件

• 匯入 Google Mobile Ads SDK 7.26.0 以上版本，可單獨匯入，或做為 Firebase 的一部分匯入。

橫幅廣告

橫幅廣告必須放在「安全區域」內，確保不會被螢幕圓角、俗稱「瀏海」的感應器區域或底部橫條擋住。本頁示範如何利用限制條件，將橫幅廣告置於安全區域的頂端或底部。

Storyboard/Interface Builder

如果您的應用程式使用 Interface Builder，請先確認已啟用 Safe Area Layout Guides。這需要使用 Xcode 9 以上版本，並以 iOS 9 以上版本為目標。

開啟 Interface Builder 檔案，然後按一下 View Controller 場景。右側會顯示「Interface Builder Document」選項，勾選「Use Safe Area Layout Guides」，並確認您的應用程式最低支援 iOS 9.0 以上版本。

建議設定寬度和高度限制，將橫幅廣告固定為所需大小。

現在，您可以將 GADBannerView 的 Top 屬性設為對齊安全區域頂部，讓橫幅廣告貼合安全區域上緣：

同樣地，您可以將 GADBannerView 的 Bottom 屬性設為對齊安全區域底部，讓橫幅貼合安全區域下緣：

您的限制條件應類似下方螢幕截圖所示 (大小/位置可能不同)：

ViewController

下方這段簡單的 View Controller 程式碼，展示了在 GADBannerView 中顯示橫幅廣告所需的基本設定，對應上方的 Storyboard 設定。

Swift

class ViewController: UIViewController {

  /// The banner view.
  @IBOutlet var bannerView: BannerView!

  override func viewDidLoad() {
    super.viewDidLoad()
    // Replace this ad unit ID with your own ad unit ID.
    bannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716"
    bannerView.rootViewController = self
    bannerView.load(Request())
  }

}

Objective-C

@interface ViewController()

@property(nonatomic, strong) IBOutlet GADBannerView *bannerView;

@end

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  // Replace this ad unit ID with your own ad unit ID.
  self.bannerView.adUnitID = @"ca-app-pub-3940256099942544/2934735716";
  self.bannerView.rootViewController = self;
  GADRequest *request = [GADRequest request];
  [self.bannerView loadRequest:request];
}

將橫幅廣告對齊安全區域邊緣

如果希望橫幅廣告靠左/靠右對齊，請將橫幅廣告的左/右邊緣對齊安全區域，而不是上層檢視區塊的邊緣。

如已啟用「Use Safe Area Layout Guides」，在 Interface Builder 中新增限制條件時，預設會以安全區域的邊緣為依據。

程式輔助

如果您的應用程式依靠程式輔助來顯示橫幅廣告，您可以在程式碼中設定限制條件來調整位置。以下範例說明如何將橫幅廣告水平置中，並固定在安全區域底部：

Swift

class ViewController: UIViewController {

  var bannerView: BannerView!

  override func viewDidLoad() {
    super.viewDidLoad()

    // Instantiate the banner view with your desired banner size.
    bannerView = BannerView(adSize: AdSizeBanner)
    addBannerViewToView(bannerView)
    bannerView.rootViewController = self
    // Set the ad unit ID to your own ad unit ID here.
    bannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716"
    bannerView.load(Request())
  }

  func addBannerViewToView(_ bannerView: UIView) {
    bannerView.translatesAutoresizingMaskIntoConstraints = false
    view.addSubview(bannerView)
    if #available(iOS 11.0, *) {
      positionBannerAtBottomOfSafeArea(bannerView)
    }
    else {
      positionBannerAtBottomOfView(bannerView)
    }
  }

  @available (iOS 11, *)
  func positionBannerAtBottomOfSafeArea(_ bannerView: UIView) {
    // Position the banner. Stick it to the bottom of the Safe Area.
    // Centered horizontally.
    let guide: UILayoutGuide = view.safeAreaLayoutGuide

    NSLayoutConstraint.activate(
      [bannerView.centerXAnchor.constraint(equalTo: guide.centerXAnchor),
       bannerView.bottomAnchor.constraint(equalTo: guide.bottomAnchor)]
    )
  }

  func positionBannerAtBottomOfView(_ bannerView: UIView) {
    // Center the banner horizontally.
    view.addConstraint(NSLayoutConstraint(item: bannerView,
                                          attribute: .centerX,
                                          relatedBy: .equal,
                                          toItem: view,
                                          attribute: .centerX,
                                          multiplier: 1,
                                          constant: 0))
    // Lock the banner to the top of the bottom layout guide.
    view.addConstraint(NSLayoutConstraint(item: bannerView,
                                          attribute: .bottom,
                                          relatedBy: .equal,
                                          toItem: self.bottomLayoutGuide,
                                          attribute: .top,
                                          multiplier: 1,
                                          constant: 0))
  }

}

Objective-C

@interface ViewController()

@property(nonatomic, strong) GADBannerView *bannerView;

@end

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  // Instantiate the banner view with your desired banner size.
  self.bannerView = [[GADBannerView alloc] initWithAdSize:GADAdSizeBanner];
  [self addBannerViewToView:self.bannerView];

  // Replace this ad unit ID with your own ad unit ID.
  self.bannerView.adUnitID = @"ca-app-pub-3940256099942544/2934735716";
  self.bannerView.rootViewController = self;
  GADRequest *request = [GADRequest request];
  [self.bannerView loadRequest:request];
}

#pragma mark - view positioning

-(void)addBannerViewToView:(UIView *_Nonnull)bannerView {
  self.bannerView.translatesAutoresizingMaskIntoConstraints = NO;
  [self.view addSubview:self.bannerView];
  if (@available(ios 11.0, *)) {
    [self positionBannerViewAtBottomOfSafeArea:bannerView];
  } else {
    [self positionBannerViewAtBottomOfView:bannerView];
  }
}

- (void)positionBannerViewAtBottomOfSafeArea:(UIView *_Nonnull)bannerView NS_AVAILABLE_IOS(11.0) {
  // Position the banner. Stick it to the bottom of the Safe Area.
  // Centered horizontally.
  UILayoutGuide *guide = self.view.safeAreaLayoutGuide;
  [NSLayoutConstraint activateConstraints:@[
    [bannerView.centerXAnchor constraintEqualToAnchor:guide.centerXAnchor],
    [bannerView.bottomAnchor constraintEqualToAnchor:guide.bottomAnchor]
  ]];
}

- (void)positionBannerViewAtBottomOfView:(UIView *_Nonnull)bannerView {
  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:bannerView
                                                        attribute:NSLayoutAttributeCenterX
                                                        relatedBy:NSLayoutRelationEqual
                                                           toItem:self.view
                                                        attribute:NSLayoutAttributeCenterX
                                                       multiplier:1
                                                         constant:0]];
  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:bannerView
                                                        attribute:NSLayoutAttributeBottom
                                                        relatedBy:NSLayoutRelationEqual
                                                           toItem:self.bottomLayoutGuide
                                                        attribute:NSLayoutAttributeTop
                                                       multiplier:1
                                                         constant:0]];
}

@end

上述技巧也可以用來將橫幅廣告固定在安全區域的上方，只需調整所用屬性與錨點即可。

智慧型橫幅廣告

如果您使用智慧橫幅，特別是橫向智慧橫幅，建議您使用限制條件，將橫幅邊緣對齊安全區域的左右邊緣。

在介面建構器中，勾選「Use Safe Area Layout Guides」選項，即可支援 iOS 9 以上版本，如上所述。

在程式碼中，您應盡可能以安全區域版面配置指南為依據，設定邊緣限制條件。以下程式碼片段會將橫幅廣告檢視區塊新增至檢視區塊，並限制檢視區塊底部全寬：

Swift

func addBannerViewToView(_ bannerView: BannerView) {
  bannerView.translatesAutoresizingMaskIntoConstraints = false
  view.addSubview(bannerView)
  if #available(iOS 11.0, *) {
    // In iOS 11, we need to constrain the view to the safe area.
    positionBannerViewFullWidthAtBottomOfSafeArea(bannerView)
  }
  else {
    // In lower iOS versions, safe area is not available so we use
    // bottom layout guide and view edges.
    positionBannerViewFullWidthAtBottomOfView(bannerView)
  }
}

// MARK: - view positioning
@available (iOS 11, *)
func positionBannerViewFullWidthAtBottomOfSafeArea(_ bannerView: UIView) {
  // Position the banner. Stick it to the bottom of the Safe Area.
  // Make it constrained to the edges of the safe area.
  let guide = view.safeAreaLayoutGuide
  NSLayoutConstraint.activate([
    guide.leftAnchor.constraint(equalTo: bannerView.leftAnchor),
    guide.rightAnchor.constraint(equalTo: bannerView.rightAnchor),
    guide.bottomAnchor.constraint(equalTo: bannerView.bottomAnchor)
  ])
}

func positionBannerViewFullWidthAtBottomOfView(_ bannerView: UIView) {
  view.addConstraint(NSLayoutConstraint(item: bannerView,
                                        attribute: .leading,
                                        relatedBy: .equal,
                                        toItem: view,
                                        attribute: .leading,
                                        multiplier: 1,
                                        constant: 0))
  view.addConstraint(NSLayoutConstraint(item: bannerView,
                                        attribute: .trailing,
                                        relatedBy: .equal,
                                        toItem: view,
                                        attribute: .trailing,
                                        multiplier: 1,
                                        constant: 0))
  view.addConstraint(NSLayoutConstraint(item: bannerView,
                                        attribute: .bottom,
                                        relatedBy: .equal,
                                        toItem: bottomLayoutGuide,
                                        attribute: .top,
                                        multiplier: 1,
                                        constant: 0))
}

Objective-C

- (void)addBannerViewToView:(UIView *)bannerView {
  bannerView.translatesAutoresizingMaskIntoConstraints = NO;
  [self.view addSubview:bannerView];
  if (@available(ios 11.0, *)) {
    // In iOS 11, we need to constrain the view to the safe area.
    [self positionBannerViewFullWidthAtBottomOfSafeArea:bannerView];
  } else {
    // In lower iOS versions, safe area is not available so we use
    // bottom layout guide and view edges.
    [self positionBannerViewFullWidthAtBottomOfView:bannerView];
  }
}

#pragma mark - view positioning

- (void)positionBannerViewFullWidthAtBottomOfSafeArea:(UIView *_Nonnull)bannerView NS_AVAILABLE_IOS(11.0) {
  // Position the banner. Stick it to the bottom of the Safe Area.
  // Make it constrained to the edges of the safe area.
  UILayoutGuide *guide = self.view.safeAreaLayoutGuide;

  [NSLayoutConstraint activateConstraints:@[
    [guide.leftAnchor constraintEqualToAnchor:bannerView.leftAnchor],
    [guide.rightAnchor constraintEqualToAnchor:bannerView.rightAnchor],
    [guide.bottomAnchor constraintEqualToAnchor:bannerView.bottomAnchor]
  ]];
}

- (void)positionBannerViewFullWidthAtBottomOfView:(UIView *_Nonnull)bannerView {
  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:bannerView
                                                        attribute:NSLayoutAttributeLeading
                                                        relatedBy:NSLayoutRelationEqual
                                                           toItem:self.view
                                                        attribute:NSLayoutAttributeLeading
                                                       multiplier:1
                                                         constant:0]];
  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:bannerView
                                                        attribute:NSLayoutAttributeTrailing
                                                        relatedBy:NSLayoutRelationEqual
                                                           toItem:self.view
                                                        attribute:NSLayoutAttributeTrailing
                                                       multiplier:1
                                                         constant:0]];
  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:bannerView
                                                        attribute:NSLayoutAttributeBottom
                                                        relatedBy:NSLayoutRelationEqual
                                                           toItem:self.bottomLayoutGuide
                                                        attribute:NSLayoutAttributeTop
                                                       multiplier:1
                                                         constant:0]];
}

原生廣告

如果您的應用程式將原生廣告固定在畫面頂端或底部，處理方式與橫幅廣告類似。主要差別在於，需要新增限制條件的對象不是 GADBannerView，而是 GADNativeAdView (或廣告的容器檢視區塊)，以確保遵循安全區域版面配置規範。對於原生廣告檢視區塊，我們建議提供更明確的大小限制條件。

插頁式廣告和獎勵廣告

自 7.26.0 版起，Google Mobile Ads SDK 全面支援 iPhone X 的插頁式和獎勵廣告格式。