本指南適用於整合應用程式開啟頁面廣告的發布商。
應用程式開啟頁面廣告是一種特殊廣告格式,適合希望藉由應用程式載入畫面賺取收益的發布商。使用者隨時可以關閉應用程式開啟頁面廣告。應用程式開啟頁面廣告會在使用者將應用程式切換至前景時顯示。
應用程式開啟頁面廣告會自動保留一小塊畫面,向使用者顯示應用程式的品牌資訊。以下是應用程式開啟頁面廣告的示例:
以下概略說明導入應用程式開啟頁面廣告的必要步驟:
- 建立管理員類別,在您需要顯示廣告之前先載入廣告。
- 在應用程式前景事件期間顯示廣告。
- 處理簡報回呼。
必要條件
請務必使用測試廣告進行測試
建構及測試應用程式時,請務必使用測試廣告,而非實際的正式版廣告。否則可能導致帳戶停權。
如要載入測試廣告,最簡單的方法是使用專用測試廣告單元 ID 來開啟應用程式廣告:
ca-app-pub-3940256099942544/5575463023
這項廣告單元已特別設定為針對每項要求傳回測試廣告,您可以在編寫程式碼、測試及偵錯時,在自己的應用程式中自由使用這項廣告單元。只要在發布應用程式前,將其替換為自己的廣告單元 ID 即可。
如要進一步瞭解 Mobile Ads SDK 的測試廣告運作方式,請參閱「測試廣告」。
實作管理員類別
廣告應快速顯示,因此建議您在需要顯示廣告前先行載入。這樣一來,使用者一進入應用程式,廣告就會立即顯示。請實作管理員類別,在需要顯示廣告時提前發出廣告請求。
建立名為 AppOpenAdManager
的新單例類別,並按照下列方式填寫:
Swift
class AppOpenAdManager: NSObject {
var appOpenAd: GADAppOpenAd?
var isLoadingAd = false.
var isShowingAd = false
static let shared = AppOpenAdManager()
private func loadAd() async {
// TODO: Implement loading an ad.
}
func showAdIfAvailable() {
// TODO: Implement showing an ad.
}
private func isAdAvailable() -> Bool {
// Check if ad exists and can be shown.
return appOpenAd != nil
}
}
Objective-C
@interface AppOpenAdManager ()
@property(nonatomic, strong) GADAppOpenAd *appOpenAd;
@property(nonatomic, assign) BOOL isLoadingAd;
@property(nonatomic, assign) BOOL isShowingAd;
@end
@implementation AppOpenAdManager
+ (nonnull AppOpenAdManager *)sharedInstance {
static AppOpenAdManager *instance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
instance = [[AppOpenAdManager alloc] init];
});
return instance;
}
- (void)loadAd {
// TODO: Implement loading an ad.
}
// Add this method to the .h file.
- (void)showAdIfAvailable {
// TODO: Implement showing an ad.
}
- (BOOL)isAdAvailable {
// Check if ad exists and can be shown.
return self.appOpenAd != nil;
}
@end
載入廣告
接下來,請填寫 loadAd()
方法。
Swift
private func loadAd() async {
// Do not load ad if there is an unused ad or one is already loading.
if isLoadingAd || isAdAvailable() {
return
}
isLoadingAd = true
do {
appOpenAd = try await GADAppOpenAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/5575463023", request: GADRequest())
} catch {
print("App open ad failed to load with error: \(error.localizedDescription)")
}
isLoadingAd = false
}
Objective-C
- (void)loadAd {
// Do not load ad if there is an unused ad or one is already loading.
if (self.isLoadingAd || [self isAdAvailable]) {
return;
}
self.isLoadingAd = YES;
[GADAppOpenAd loadWithAdUnitID:@"ca-app-pub-3940256099942544/5575463023"
request:[GADRequest request]
completionHandler:^(GADAppOpenAd *_Nullable appOpenAd, NSError *_Nullable error) {
self.isLoadingAd = NO;
if (error) {
NSLog(@"Failed to load app open ad: %@", error);
return;
}
self.appOpenAd = appOpenAd;
}];
}
顯示廣告
接下來,請填寫 showAdIfAvailable()
方法。如果沒有可用的廣告,方法會嘗試載入廣告。
Swift
func showAdIfAvailable() {
// If the app open ad is already showing, do not show the ad again.
guard !isShowingAd else { return }
// If the app open ad is not available yet but is supposed to show, load
// a new ad.
if !isAdAvailable() {
Task {
await loadAd()
}
return
}
if let ad = appOpenAd {
isShowingAd = true
ad.present(fromRootViewController: nil)
}
}
Objective-C
- (void)showAdIfAvailable {
// If the app open ad is already showing, do not show the ad again.
if (self.isShowingAd) {
return;
}
// If the app open ad is not available yet but is supposed to show, load a
// new ad.
if (![self isAdAvailable]) {
[self loadAd];
return;
}
self.isShowingAd = YES;
[self.appOpenAd presentFromRootViewController:nil];
}
在應用程式前景事件期間顯示廣告
應用程式啟用時,請呼叫 showAdIfAvailable()
來顯示廣告 (如果有),或載入新的廣告。
Swift
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
// ...
func applicationDidBecomeActive(_ application: UIApplication) {
// Show the app open ad when the app is foregrounded.
AppOpenAdManager.shared.showAdIfAvailable()
}
}
Objective-C
@implementation AppDelegate
// ...
- (void) applicationDidBecomeActive:(UIApplication *)application {
// Show the app open ad when the app is foregrounded.
[AppOpenAdManager.sharedInstance showAdIfAvailable];
}
@end
處理簡報回呼
當應用程式顯示應用程式開啟頁面廣告時,您應使用 GADFullScreenContentDelegate
處理特定呈現事件。特別是,您需要在第一則廣告播放完畢後,要求下一個應用程式開啟廣告。
在 AppOpenAdManager
類別中加入以下內容:
Swift
class AppOpenAdManager: NSObject, GADFullScreenContentDelegate {
// ...
private func loadAd() async {
// Do not load ad if there is an unused ad or one is already loading.
if isLoadingAd || isAdAvailable() {
return
}
isLoadingAd = true
do {
appOpenAd = try await GADAppOpenAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/5575463023", request: GADRequest())
appOpenAd?.fullScreenContentDelegate = self
} catch {
print("App open ad failed to load with error: \(error.localizedDescription)")
}
isLoadingAd = false
}
// ...
// MARK: - GADFullScreenContentDelegate methods
func adWillPresentFullScreenContent(_ ad: GADFullScreenPresentingAd) {
print("App open ad will be presented.")
}
func adDidDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
appOpenAd = nil
isShowingAd = false
// Reload an ad.
Task {
await loadAd()
}
}
func ad(
_ ad: GADFullScreenPresentingAd,
didFailToPresentFullScreenContentWithError error: Error
) {
appOpenAd = nil
isShowingAd = false
// Reload an ad.
Task {
await loadAd()
}
}
}
Objective-C
@interface AppOpenAdManager () <GADFullScreenContentDelegate>
@property(nonatomic, strong) GADAppOpenAd *appOpenAd
@property(nonatomic, assign) BOOL isLoadingAd;
@property(nonatomic, assign) BOOL isShowingAd;
@end
@implementation AppOpenAdManager
// ...
- (void)loadAd {
// Do not load ad if there is an unused ad or one is already loading.
if (self.isLoadingAd || [self isAdAvailable]) {
return;
}
self.isLoadingAd = YES;
[GADAppOpenAd loadWithAdUnitID:@"ca-app-pub-3940256099942544/5575463023"
request:[GADRequest request]
completionHandler:^(GADAppOpenAd *_Nullable appOpenAd, NSError *_Nullable error) {
self.isLoadingAd = NO;
if (error) {
NSLog(@"Failed to load app open ad: %@", error);
return;
}
self.appOpenAd = appOpenAd;
self.appOpenAd.fullScreenContentDelegate = self;
}];
}
- (BOOL)isAdAvailable {
// Check if ad exists and can be shown.
return self.appOpenAd != nil;
}
// ...
#pragma mark - GADFullScreenContentDelegate methods
- (void)adWillPresentFullScreenContent:(nonnull id<GADFullScreenPresentingAd>)ad {
NSLog(@"App open ad is will be presented.");
}
- (void)adDidDismissFullScreenContent:(nonnull id<GADFullScreenPresentingAd>)ad {
self.appOpenAd = nil;
self.isShowingAd = NO;
// Reload an ad.
[self loadAd];
}
- (void)ad:(nonnull id<GADFullScreenPresentingAd>)ad
didFailToPresentFullScreenContentWithError:(nonnull NSError *)error {
self.appOpenAd = nil;
self.isShowingAd = NO;
// Reload an ad.
[self loadAd];
}
@end
考慮廣告效期
為避免顯示已失效的廣告,您可以在應用程式委派程式碼中新增方法,檢查廣告參照載入後的經過時間。
在 AppOpenAdManager
中,新增名為 loadTime
的 Date
屬性,並在廣告載入時設定該屬性。接著,您可以新增方法,在廣告載入後未超過特定小時數時,傳回 true
。請務必先檢查廣告參照資料的有效性,再嘗試顯示廣告。
Swift
class AppOpenAdManager: NSObject, GADFullScreenContentDelegate {
var appOpenAd: GADAppOpenAd?
var isLoadingAd = false.
var isShowingAd = false
var loadTime: Date?
let fourHoursInSeconds = TimeInterval(3600 * 4)
// ...
private func loadAd() async {
// Do not load ad if there is an unused ad or one is already loading.
if isLoadingAd || isAdAvailable() {
return
}
isLoadingAd = true
do {
appOpenAd = try await GADAppOpenAd.load(
withAdUnitID: "ca-app-pub-3940256099942544/5575463023", request: GADRequest())
appOpenAd?.fullScreenContentDelegate = self
loadTime = Date()
} catch {
print("App open ad failed to load with error: \(error.localizedDescription)")
}
isLoadingAd = false
}
private func wasLoadTimeLessThanFourHoursAgo() -> Bool {
guard let loadTime = loadTime else { return false }
// Check if ad was loaded more than four hours ago.
return Date().timeIntervalSince(loadTime) < fourHoursInSeconds
}
private func isAdAvailable() -> Bool {
// Check if ad exists and can be shown.
return appOpenAd != nil && wasLoadTimeLessThanFourHoursAgo()
}
}
Objective-C
static NSTimeInterval const fourHoursInSeconds = 3600 * 4;
@interface AppOpenAdManager () <GADFullScreenContentDelegate>
@property(nonatomic, strong) GADAppOpenAd *appOpenAd
@property(nonatomic, assign) BOOL isLoadingAd;
@property(nonatomic, assign) BOOL isShowingAd;
@property(weak, nonatomic) NSDate *loadTime;
@end
@implementation AppOpenAdManager
// ...
- (void)loadAd {
// Do not load ad if there is an unused ad or one is already loading.
if (self.isLoadingAd || [self isAdAvailable]) {
return;
}
self.isLoadingAd = YES;
[GADAppOpenAd loadWithAdUnitID:@"ca-app-pub-3940256099942544/5575463023"
request:[GADRequest request]
completionHandler:^(GADAppOpenAd *_Nullable appOpenAd, NSError *_Nullable error) {
self.isLoadingAd = NO;
if (error) {
NSLog(@"Failed to load app open ad: %@", error);
return;
}
self.appOpenAd = appOpenAd;
self.appOpenAd.fullScreenContentDelegate = self;
self.loadTime = [NSDate date];
}];
}
- (BOOL)wasLoadTimeLessThanFourHoursAgo {
// Check if ad was loaded more than four hours ago.
return [[NSDate Date] timeIntervalSinceDate:self.loadTime] < fourHoursInSeconds;
}
- (BOOL)isAdAvailable {
// Check if ad exists and can be shown.
return self.appOpenAd != nil && [self wasLoadTimeLessThanFourHoursAgo];
}
@end
冷啟動和載入畫面
本文件假設您只會在使用者將應用程式從記憶體中暫停後,在前景顯示應用程式開啟頁面廣告。當應用程式啟動,但先前未在記憶體中暫停時,就會發生「冷啟動」。
舉例來說,使用者初次開啟應用程式就是冷啟動。在冷啟動期間,您不會有先前載入的應用程式開啟頁面廣告,因此無法立即顯示廣告。在您提出廣告請求和收到廣告回應之間,可能會出現延遲的情況,導致使用者在應用程式運作一段時間後,才會看到不相關的廣告。這會造成使用者體驗不佳,因此應避免採用。
在冷啟動時使用應用程式開啟頁面廣告的首選方式,是使用載入畫面載入遊戲或應用程式素材資源,並只在載入畫面中顯示廣告。如果應用程式已完成載入,並將使用者導向應用程式的主內容,請勿顯示廣告。
最佳做法
Google 建立了應用程式開啟廣告,協助您透過應用程式的載入畫面營利,但請務必遵循最佳做法,讓使用者能盡情享受應用程式。請務必:
- 等使用者用過應用程式幾次之後,再放送第一則應用程式開啟頁面廣告。
- 在使用者等待應用程式載入時,顯示應用程式開啟頁面廣告。
- 如果載入畫面顯示在應用程式開啟頁面廣告的背景中,且載入畫面在廣告關閉前就完成載入,建議您利用
adDidDismissFullScreenContent
方法關閉載入畫面。
GitHub 上的完整範例
後續步驟
進一步瞭解使用者隱私權。