廣告專用的網頁檢視 API 可讓應用程式信號在 CustomTabSession 中的代碼使用，有助於提升提供內容的網頁發布商營利，並保護廣告主免受垃圾內容干擾。
運作方式
只有在下列任一情況觸發廣告事件時，才會與 Google Mobile Ads SDK 通訊：
Google Mobile Ads SDK 會透過 Android 架構提供的 CustomTabsSession 開啟 postMessage 管道，促進通訊。
必要條件
- Google Mobile Ads SDK 23.0.0 以上版本。
- 行動應用程式中現有的 Chrome Custom Tabs 實作項目。請參閱「預先載入和預先擷取：使用 Custom Tabs Service」。
- 使用 Digital Asset Links 將行動應用程式與網站建立關聯。
在
AndroidManifest.xml檔案中新增下列<meta-data>標記，即可略過APPLICATION_ID的檢查。如果您錯過這個步驟，且未提供<meta-data>標記，Google Mobile Ads SDK 會在應用程式啟動時擲回IllegalStateException。<!-- Bypass APPLICATION_ID check for web view APIs for ads --> <meta-data android:name="com.google.android.gms.ads.INTEGRATION_MANAGER" android:value="webview"/>
導入作業
在 Chrome Custom Tabs 實作中，修改 onCustomTabsServiceConnected() 回呼中的程式碼。將 newSession() 替換為 MobileAds.registerCustomTabsSession()。這會建立與 postMessage 管道的連線，以便使用 SDK 信號擴充廣告代碼。如要連結 postMessage 管道，必須使用 Digital Asset Link。您可以視需要設定 CustomTabsCallback 參數，監聽 Chrome 自訂分頁事件。
您應該還是可以從 Google Mobile Ads SDK 接收 CustomTabsSession 訊息，但當 SDK 請求新管道來覆寫現有管道時，連接埠可能會變更。
下列程式碼片段說明如何使用 Google Mobile Ads SDK 註冊 CustomTabsSession：
Kotlin
import com.google.android.gms.ads.MobileAds
class MainActivity : ComponentActivity() {
private var customTabsClient: CustomTabsClient? = null
private var customTabsSession: CustomTabsSession? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// Get the default browser package name, this will be null if
// the default browser does not provide a CustomTabsService.
val packageName = CustomTabsClient.getPackageName(applicationContext, null);
if (packageName == null) {
// Do nothing as service connection is not supported.
return
}
CustomTabsClient.bindCustomTabsService(
applicationContext,
packageName,
object : CustomTabsServiceConnection() {
override fun onCustomTabsServiceConnected(
name: ComponentName, client: CustomTabsClient,
) {
customTabsClient = client
// Warm up the browser process.
customTabsClient?.warmup(0L)
// Create a new browser session using the Google Mobile Ads SDK.
customTabsSession = MobileAds.registerCustomTabsSession(
this@MainActivity.applicationContext,
client,
// Checks the "Digital Asset Link" to connect the postMessage channel.
ORIGIN,
// Optional parameter to receive the delegated callbacks.
customTabsCallback
)
// Create a new browser session if the Google Mobile Ads SDK is
// unable to create one.
if (customTabsSession == null) {
customTabsSession = client.newSession(customTabsCallback)
}
// Pass the custom tabs session into the intent.
val customTabsIntent = CustomTabsIntent.Builder(customTabsSession).build()
customTabsIntent.launchUrl(this@MainActivity,
Uri.parse("YOUR_URL"))
}
override fun onServiceDisconnected(componentName: ComponentName) {
// Remove the custom tabs client and custom tabs session.
customTabsClient = null
customTabsSession = null
}
})
}
// Listen for events from the CustomTabsSession delegated by the Google Mobile Ads SDK.
private val customTabsCallback: CustomTabsCallback = object : CustomTabsCallback() {
@Synchronized
override fun onNavigationEvent(navigationEvent: Int, extras: Bundle?) {
// Called when a navigation event happens.
}
@Synchronized
override fun onMessageChannelReady(extras: Bundle?) {
// Called when the channel is ready for sending and receiving messages on both
// ends.
// This frequently happens, such as each time the SDK requests a
// new channel.
}
@Synchronized
override fun onPostMessage(message: String, extras: Bundle?) {
// Called when a tab controlled by this CustomTabsSession has sent a postMessage.
}
override fun onRelationshipValidationResult(
relation: Int, requestedOrigin: Uri, result: Boolean, extras: Bundle?
) {
// Called when a relationship validation result is available.
}
override fun onActivityResized(height: Int, width: Int, extras: Bundle) {
// Called when the tab is resized.
}
override fun extraCallback(callbackName: String, args: Bundle?) {
}
override fun extraCallbackWithResult(callbackName: String, args: Bundle?): Bundle? {
return null
}
}
companion object {
// Replace this URL with an associated website.
const val ORIGIN = "https://www.google.com"
}
}
Java
import com.google.android.gms.ads.MobileAds;
class MainActivity extends ComponentActivity {
// Replace this URL with an associated website.
private static final String ORIGIN = "https://www.google.com";
private CustomTabsClient customTabsClient;
private CustomTabsSession customTabsSession;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get the default browser package name, this will be null if
// the default browser does not provide a CustomTabsService.
String packageName = CustomTabsClient.getPackageName(getApplicationContext(), null);
if (packageName == null) {
// Do nothing as service connection is not supported.
return;
}
CustomTabsClient.bindCustomTabsService(
getApplicationContext(),
packageName,
new CustomTabsServiceConnection() {
@Override
public void onCustomTabsServiceConnected(@NonNull ComponentName name,
@NonNull CustomTabsClient client) {
customTabsClient = client;
// Warm up the browser process.
customTabsClient.warmup(0);
// Create a new browser session using the Google Mobile Ads SDK.
customTabsSession = MobileAds.registerCustomTabsSession(
MainActivity.this.getApplicationContext(),
client,
// Checks the "Digital Asset Link" to connect the postMessage channel.
ORIGIN,
// Optional parameter to receive the delegated callbacks.
customTabsCallback);
// Create a new browser session if the Google Mobile Ads SDK is
// unable to create one.
if (customTabsSession == null) {
customTabsSession = client.newSession(customTabsCallback);
}
// Pass the custom tabs session into the intent.
CustomTabsIntent intent = new CustomTabsIntent.Builder(customTabsSession).build();
intent.launchUrl(MainActivity.this, Uri.parse("YOUR_URL"));
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
// Remove the custom tabs client and custom tabs session.
customTabsClient = null;
customTabsSession = null;
}
}
);
}
// Listen for events from the CustomTabsSession delegated by the Google Mobile Ads SDK.
private final CustomTabsCallback customTabsCallback = new CustomTabsCallback() {
@Override
public void onNavigationEvent(int navigationEvent, @Nullable Bundle extras) {
// Called when a navigation event happens.
super.onNavigationEvent(navigationEvent, extras);
}
@Override
public void onMessageChannelReady(@Nullable Bundle extras) {
// Called when the channel is ready for sending and receiving messages on both
// ends.
// This frequently happens, such as each time the SDK requests a
// new channel.
super.onMessageChannelReady(extras);
}
@Override
public void onPostMessage(@NonNull String message, @Nullable Bundle extras) {
// Called when a tab controlled by this CustomTabsSession has sent a postMessage.
super.onPostMessage(message, extras);
}
@Override
public void onRelationshipValidationResult(int relation, @NonNull Uri requestedOrigin,
boolean result, @Nullable Bundle extras) {
// Called when a relationship validation result is available.
super.onRelationshipValidationResult(relation, requestedOrigin, result, extras);
}
@Override
public void onActivityResized(int height, int width, @NonNull Bundle extras) {
// Called when the tab is resized.
super.onActivityResized(height, width, extras);
}
@Override
public void extraCallback(@NonNull String callbackName, @Nullable Bundle args) {
super.extraCallback(callbackName, args);
}
@Nullable
@Override
public Bundle extraCallbackWithResult(@NonNull String callbackName, @Nullable Bundle args) {
return super.extraCallbackWithResult(callbackName, args);
}
};
}