在 iOS 中实现横幅广告
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 ViewController 实现 (.m) 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 UADSBannerView API 部分。
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)示例代码
@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];
// Load ad content to the banner view object:
[_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