在 iOS 中实现横幅广告
在 iOS 应用中实现横幅广告。在 View 层级视图中创建和显示横幅广告视图对象，并使用委托来管理广告事件。
阅读时间4 分钟最后更新于 3 天前
重要
app-ads.txt 是一个 IAB 倡议文件，旨在打击欺诈，建立透明的广告生态系统。请务必按照要求实现 app-ads.txt。否则，横幅广告需求可能会显著下降。
横幅广告需要特定类型的专用横幅广告单元。
您可以将横幅广告视图对象放入 View 层级视图中，就像放置任何其他视图一样。这样就可以自定义每个横幅广告实例的位置，或显示多个横幅广告。
注意
如 Apple 指南中所述，横幅广告的内容不会在安全区域之外呈现。
脚本实现
将您的横幅广告代码添加到 实现 () 中。以下脚本示例是用于在屏幕上展示两个横幅广告的示例实现方案。如需了解引用的类的更多信息，请参阅 API 部分。
ViewController.mUADSBannerView实现 MREC 横幅广告格式
注意
在展示横幅广告之前必须初始化 Unity Ads。
要在应用中显示中等矩形 (MREC) 大小的广告格式，请确保使用适当的尺寸，例如 300x250、300x300 或 450x450。如果使用的是 300x250 的 MREC 横幅广告，将它替换为以下示例代码：
CGSizeMake(320, 50)
调整后的尺寸：
CGSizeMake(300, 250)
横幅广告示例
@interface ViewController () <UADSBannerViewDelegate>// This is the Ad Unit or Placement that will display banner ads: @property (strong) NSString* placementId;// This banner view object will be placed at the top of the screen: @property (strong, nonatomic) UADSBannerView *topBannerView;// This banner view object will be placed at the bottom of the screen: @property (strong, nonatomic) UADSBannerView *bottomBannerView;@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; self.placementId = @"banner"; [UnityAds initialize: @"1234567" testMode: YES initializationDelegate: self];}// Example method for creating and loading the top banner view object: - (void)loadTopBanner{ // Instantiate a banner view object with the Ad Unit ID and size: self.topBannerView = [[UADSBannerView alloc] initWithPlacementId：_placementId size：CGSizeMake(320, 50)]; // Set the banner delegate for event callbacks: self.topBannerView.delegate = self; // Add the banner view object to the view hierarchy: [self addBannerViewToTopView:self.topBannerView]; // 将广告内容加载到横幅视图对象： [_topBannerView load];}// Example method for creating and loading the bottom banner view object: - (void)loadBottomBanner{ self.bottomBannerView = [[UADSBannerView alloc] initWithPlacementId：_placementId size：CGSizeMake(320, 50)]; self.bottomBannerView.delegate = self; [self addBannerViewToBottomView:self.bottomBannerView]; [_bottomBannerView load];}// Example method for discarding the top banner view object (for example, if there's no fill): - (void)unLoadTopBanner{ // Remove the banner view object from the view hierarchy: [self.topBannerView removeFromSuperview]; // Set it to nil: _topBannerView = nil;}// Example method for discarding the bottom banner view object: - (void)unLoadBottomBanner{ [self.bottomBannerView removeFromSuperview]; _bottomBannerView = nil;}// Example method for placing the top banner view object: - (void)addBannerViewToTopView:(UIView *)bannerView { bannerView.translatesAutoresizingMaskIntoConstraints = NO; [self.view addSubview:bannerView]; [self.view addConstraints:@[ [NSLayoutConstraint constraintWithItem:bannerView attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.topLayoutGuide attribute:NSLayoutAttributeBottom multiplier:1 constant:0], [NSLayoutConstraint constraintWithItem:bannerView attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1 constant:0] ]];}// Example method for placing the bottom banner view object:- (void)addBannerViewToBottomView: (UIView *)bannerView { bannerView.translatesAutoresizingMaskIntoConstraints = NO; [self.view addSubview:bannerView]; [self.view addConstraints:@[ [NSLayoutConstraint constraintWithItem:bannerView attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.bottomLayoutGuide attribute:NSLayoutAttributeTop multiplier:1 constant:0], [NSLayoutConstraint constraintWithItem:bannerView attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1 constant:0] ]];}// Implement the delegate methods:#pragma mark :UADSBannerViewDelegate- (void)bannerViewDidLoad:(UADSBannerView *)bannerView { // Called when the banner view object finishes loading an ad. NSLog(@"Banner loaded for Ad Unit or Placement: %@", bannerView.placementId);}- (void)bannerViewDidClick:(UADSBannerView *)bannerView { // Called when the banner is clicked. NSLog(@"Banner was clicked for Ad Unit or Placement: %@", bannerView.placementId);}- (void)bannerViewDidLeaveApplication:(UADSBannerView *)bannerView { // Called when the banner links out of the application.}- (void)bannerViewDidError:(UADSBannerView *)bannerView error:(UADSBannerError *)error{ // Called when an error occurs showing the banner view object. NSLog(@"Banner encountered an error for Ad Unit or Placement: %@ with error message %@", bannerView.placementId, [error localizedDescription]); // Note that the UADSBannerError can indicate no fill (refer to the API documentation).}@end