插页式广告

插页式广告属于全屏广告,会覆盖宿主应用的整个界面,通常展示在应用流程的自然过渡点上,例如,活动之间的切换处或游戏关卡之间的暂停时段中。当应用展示插页式广告时,用户可以选择点按该广告,进而访问其目标网址,也可以将其关闭,并返回应用。 阅读我们的案例研究

本指南介绍了如何将插页式广告植入到 Android 应用中。

前提条件

  • Google 移动广告 SDK 19.7.0 或更高版本。
  • 完成入门指南

务必用测试广告进行测试

在构建和测试应用时,请确保使用的是测试广告,而不是实际投放的广告。否则,可能会导致您的账号被中止。

对于 Android 插页式广告,加载测试广告最简便的方法就是使用下面的专用测试广告单元 ID:

ca-app-pub-3940256099942544/1033173712

该测试广告单元 ID 已经过专门配置,可确保每个请求返回的都是测试广告。您可以在自己应用的编码、测试和调试过程中随意使用该测试广告单元 ID。只需确保您会在发布应用前用自己的广告单元 ID 替换该测试广告单元 ID 即可。

如需详细了解移动广告 SDK 的测试广告如何运作,请参阅测试广告

加载广告

如需加载插页式广告,请调用 InterstitialAd 静态 load() 方法并传入 InterstitialAdLoadCallback,以接收加载的广告或任何可能的错误。请注意,与其他广告格式加载回调一样,InterstitialAdLoadCallback 会利用 LoadAdError 提供较高保真度的错误详情。

JavaKotlin
import com.google.android.gms.ads.interstitial.InterstitialAd;
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;

public class MainActivity extends Activity {

  private InterstitialAd mInterstitialAd;
  private static final String TAG = "MainActivity";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    AdRequest adRequest = new AdRequest.Builder().build();

    InterstitialAd.load(this,"ca-app-pub-3940256099942544/1033173712", adRequest,
        new InterstitialAdLoadCallback() {
      @Override
      public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
        // The mInterstitialAd reference will be null until
        // an ad is loaded.
        mInterstitialAd = interstitialAd;
        Log.i(TAG, "onAdLoaded");
      }

      @Override
      public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
        // Handle the error
        Log.d(TAG, loadAdError.toString());
        mInterstitialAd = null;
      }
    });
  }
}
import com.google.android.gms.ads.interstitial.InterstitialAd;
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;

class MainActivity : AppCompatActivity() {

  private var mInterstitialAd: InterstitialAd? = null
  private final val TAG = "MainActivity"

    override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)

      val adRequest = AdRequest.Builder().build()

      InterstitialAd.load(this,"ca-app-pub-3940256099942544/1033173712", adRequest, object : InterstitialAdLoadCallback() {
        override fun onAdFailedToLoad(adError: LoadAdError) {
          Log.d(TAG, adError?.toString())
          mInterstitialAd = null
        }

        override fun onAdLoaded(interstitialAd: InterstitialAd) {
          Log.d(TAG, 'Ad was loaded.')
          mInterstitialAd = interstitialAd
        }
      })
    }
}

设置 FullScreenContentCallback

FullScreenContentCallback 处理与展示 InterstitialAd 相关的事件。在展示 InterstitialAd 之前,请务必按如下方式设置回调:

JavaKotlin
mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback(){
  @Override
  public void onAdClicked() {
    // Called when a click is recorded for an ad.
    Log.d(TAG, "Ad was clicked.");
  }

  @Override
  public void onAdDismissedFullScreenContent() {
    // Called when ad is dismissed.
    // Set the ad reference to null so you don't show the ad a second time.
    Log.d(TAG, "Ad dismissed fullscreen content.");
    mInterstitialAd = null;
  }

  @Override
  public void onAdFailedToShowFullScreenContent(AdError adError) {
    // Called when ad fails to show.
    Log.e(TAG, "Ad failed to show fullscreen content.");
    mInterstitialAd = null;
  }

  @Override
  public void onAdImpression() {
    // Called when an impression is recorded for an ad.
    Log.d(TAG, "Ad recorded an impression.");
  }

  @Override
  public void onAdShowedFullScreenContent() {
    // Called when ad is shown.
    Log.d(TAG, "Ad showed fullscreen content.");
  }
});
mInterstitialAd?.fullScreenContentCallback = object: FullScreenContentCallback() {
  override fun onAdClicked() {
    // Called when a click is recorded for an ad.
    Log.d(TAG, "Ad was clicked.")
  }

  override fun onAdDismissedFullScreenContent() {
    // Called when ad is dismissed.
    Log.d(TAG, "Ad dismissed fullscreen content.")
    mInterstitialAd = null
  }

  override fun onAdFailedToShowFullScreenContent(adError: AdError?) {
    // Called when ad fails to show.
    Log.e(TAG, "Ad failed to show fullscreen content.")
    mInterstitialAd = null
  }

  override fun onAdImpression() {
    // Called when an impression is recorded for an ad.
    Log.d(TAG, "Ad recorded an impression.")
  }

  override fun onAdShowedFullScreenContent() {
    // Called when ad is shown.
    Log.d(TAG, "Ad showed fullscreen content.")
  }
}

展示广告

插页式广告应在应用流程的自然停顿期间进行展示,例如游戏的不同关卡之间或用户完成一项任务之后,都是非常不错的展示时机。如需展示插页式广告,请使用 show() 方法。

JavaKotlin
if (mInterstitialAd != null) {
  mInterstitialAd.show(MyActivity.this);
} else {
  Log.d("TAG", "The interstitial ad wasn't ready yet.");
}
if (mInterstitialAd != null) {
  mInterstitialAd?.show(this)
} else {
  Log.d("TAG", "The interstitial ad wasn't ready yet.")
}

一些最佳做法

考虑插页式广告这种广告类型是否适合您的应用。
在具有自然过渡点的应用中,插页式广告的效果最好。此类过渡点通常存在于应用内的任务结束时,例如分享完图片或完成一个游戏关卡时。请务必考虑在应用流程的哪些时间点展示插页式广告,以及用户可能会以什么方式响应。
务必在展示插页式广告时暂停操作。
插页式广告类型多样,包括文字广告、图片广告和视频广告等。确保应用在展示插页式广告时,也会暂停使用某些资源,以便供广告使用,这一点十分重要。例如,当您发出展示插页式广告的调用后,请务必暂停应用产生的所有音频输出。
留出充足的加载时间。
确保在恰当的时间展示插页式广告十分重要,同样,确保用户无需等待广告加载也十分重要。在您打算调用 show() 前,请事先通过调用 load() 加载广告,这可确保应用在广告展示时间到来前完全加载插页式广告。
不要向用户展示太多广告。
虽然提高插页式广告在应用中的展示频次似乎是实现增收的好方法,但这么做也会影响用户体验并降低点击率。应确保用户不会频繁受到广告打扰,使他们可以充分享受到使用应用的乐趣。

源代码

/*
 * Copyright (C) 2013 Google, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.android.gms.example.interstitialexample;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.ads.AdError;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.FullScreenContentCallback;
import com.google.android.gms.ads.LoadAdError;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.RequestConfiguration;
import com.google.android.gms.ads.interstitial.InterstitialAd;
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicBoolean;

/** Main Activity. Inflates main activity xml. */
@SuppressLint("SetTextI18n")
public class MyActivity extends AppCompatActivity {

  // Check your logcat output for the test device hashed ID e.g.
  // "Use RequestConfiguration.Builder().setTestDeviceIds(Arrays.asList("ABCDEF012345"))
  // to get test ads on this device" or
  // "Use new ConsentDebugSettings.Builder().addTestDeviceHashedId("ABCDEF012345") to set this as
  // a debug device".
  public static final String TEST_DEVICE_HASHED_ID = "ABCDEF012345";

  private static final long GAME_LENGTH_MILLISECONDS = 3000;
  private static final String AD_UNIT_ID = "ca-app-pub-3940256099942544/1033173712";
  private static final String TAG = "MyActivity";

  private final AtomicBoolean isMobileAdsInitializeCalled = new AtomicBoolean(false);
  private GoogleMobileAdsConsentManager googleMobileAdsConsentManager;
  private InterstitialAd interstitialAd;
  private CountDownTimer countDownTimer;
  private Button retryButton;
  private boolean gamePaused;
  private boolean gameOver;
  private boolean adIsLoading;
  private long timerMilliseconds;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);

    // Log the Mobile Ads SDK version.
    Log.d(TAG, "Google Mobile Ads SDK Version: " + MobileAds.getVersion());

    googleMobileAdsConsentManager =
        GoogleMobileAdsConsentManager.getInstance(getApplicationContext());
    googleMobileAdsConsentManager.gatherConsent(
        this,
        consentError -> {
          if (consentError != null) {
            // Consent not obtained in current session.
            Log.w(
                TAG,
                String.format("%s: %s", consentError.getErrorCode(), consentError.getMessage()));
          }

          startGame();

          if (googleMobileAdsConsentManager.canRequestAds()) {
            initializeMobileAdsSdk();
          }

          if (googleMobileAdsConsentManager.isPrivacyOptionsRequired()) {
            // Regenerate the options menu to include a privacy setting.
            invalidateOptionsMenu();
          }
        });

    // This sample attempts to load ads using consent obtained in the previous session.
    if (googleMobileAdsConsentManager.canRequestAds()) {
      initializeMobileAdsSdk();
    }

    // Create the "retry" button, which tries to show an interstitial between game plays.
    retryButton = findViewById(R.id.retry_button);
    retryButton.setVisibility(View.INVISIBLE);
    retryButton.setOnClickListener(
        new View.OnClickListener() {
          @Override
          public void onClick(View view) {
            showInterstitial();
          }
        });
  }

  public void loadAd() {
    // Request a new ad if one isn't already loaded.
    if (adIsLoading || interstitialAd != null) {
      return;
    }
    adIsLoading = true;
    AdRequest adRequest = new AdRequest.Builder().build();
    InterstitialAd.load(
        this,
        AD_UNIT_ID,
        adRequest,
        new InterstitialAdLoadCallback() {
          @Override
          public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
            // The mInterstitialAd reference will be null until
            // an ad is loaded.
            MyActivity.this.interstitialAd = interstitialAd;
            adIsLoading = false;
            Log.i(TAG, "onAdLoaded");
            Toast.makeText(MyActivity.this, "onAdLoaded()", Toast.LENGTH_SHORT).show();
            interstitialAd.setFullScreenContentCallback(
                new FullScreenContentCallback() {
                  @Override
                  public void onAdDismissedFullScreenContent() {
                    // Called when fullscreen content is dismissed.
                    // Make sure to set your reference to null so you don't
                    // show it a second time.
                    MyActivity.this.interstitialAd = null;
                    Log.d("TAG", "The ad was dismissed.");
                  }

                  @Override
                  public void onAdFailedToShowFullScreenContent(AdError adError) {
                    // Called when fullscreen content failed to show.
                    // Make sure to set your reference to null so you don't
                    // show it a second time.
                    MyActivity.this.interstitialAd = null;
                    Log.d("TAG", "The ad failed to show.");
                  }

                  @Override
                  public void onAdShowedFullScreenContent() {
                    // Called when fullscreen content is shown.
                    Log.d("TAG", "The ad was shown.");
                  }
                });
          }

          @Override
          public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
            // Handle the error
            Log.i(TAG, loadAdError.getMessage());
            interstitialAd = null;
            adIsLoading = false;

            String error =
                String.format(
                    java.util.Locale.US,
                    "domain: %s, code: %d, message: %s",
                    loadAdError.getDomain(),
                    loadAdError.getCode(),
                    loadAdError.getMessage());
            Toast.makeText(
                    MyActivity.this, "onAdFailedToLoad() with error: " + error, Toast.LENGTH_SHORT)
                .show();
          }
        });
  }

  private void createTimer(final long milliseconds) {
    // Create the game timer, which counts down to the end of the level
    // and shows the "retry" button.
    if (countDownTimer != null) {
      countDownTimer.cancel();
    }

    final TextView textView = findViewById(R.id.timer);

    countDownTimer =
        new CountDownTimer(milliseconds, 50) {
          @Override
          public void onTick(long millisUnitFinished) {
            timerMilliseconds = millisUnitFinished;
            textView.setText("seconds remaining: " + ((millisUnitFinished / 1000) + 1));
          }

          @Override
          public void onFinish() {
            gameOver = true;
            textView.setText("done!");
            retryButton.setVisibility(View.VISIBLE);
          }
        };

    countDownTimer.start();
  }

  @Override
  public void onResume() {
    // Start or resume the game.
    super.onResume();
    resumeGame();
  }

  @Override
  public void onPause() {
    super.onPause();
    pauseGame();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.action_menu, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    View menuItemView = findViewById(item.getItemId());
    PopupMenu popup = new PopupMenu(this, menuItemView);
    popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());
    popup.show();
    popup
        .getMenu()
        .findItem(R.id.privacy_settings)
        .setVisible(googleMobileAdsConsentManager.isPrivacyOptionsRequired());
    popup.setOnMenuItemClickListener(
        popupMenuItem -> {
          if (popupMenuItem.getItemId() == R.id.privacy_settings) {
            pauseGame();
            // Handle changes to user consent.
            googleMobileAdsConsentManager.showPrivacyOptionsForm(
                this,
                formError -> {
                  if (formError != null) {
                    Toast.makeText(this, formError.getMessage(), Toast.LENGTH_SHORT).show();
                  }
                  resumeGame();
                });
            return true;
          } else if (popupMenuItem.getItemId() == R.id.ad_inspector) {
            MobileAds.openAdInspector(
                this,
                error -> {
                  // Error will be non-null if ad inspector closed due to an error.
                  if (error != null) {
                    Toast.makeText(this, error.getMessage(), Toast.LENGTH_SHORT).show();
                  }
                });
            return true;
          }
          return false;
        });
    return super.onOptionsItemSelected(item);
  }

  private void showInterstitial() {
    // Show the ad if it's ready. Otherwise restart the game.
    if (interstitialAd != null) {
      interstitialAd.show(this);
    } else {
      startGame();
      if (googleMobileAdsConsentManager.canRequestAds()) {
        loadAd();
      }
    }
  }

  private void startGame() {
    // Hide the button, and kick off the timer.
    retryButton.setVisibility(View.INVISIBLE);
    createTimer(GAME_LENGTH_MILLISECONDS);
    gamePaused = false;
    gameOver = false;
  }

  private void resumeGame() {
    if (gameOver || !gamePaused) {
      return;
    }
    // Create a new timer for the correct length.
    gamePaused = false;
    createTimer(timerMilliseconds);
  }

  private void pauseGame() {
    if (gameOver || gamePaused) {
      return;
    }
    countDownTimer.cancel();
    gamePaused = true;
  }

  private void initializeMobileAdsSdk() {
    if (isMobileAdsInitializeCalled.getAndSet(true)) {
      return;
    }

    // Set your test devices.
    MobileAds.setRequestConfiguration(
        new RequestConfiguration.Builder()
            .setTestDeviceIds(Arrays.asList(TEST_DEVICE_HASHED_ID))
            .build());

    new Thread(
            () -> {
              // Initialize the Google Mobile Ads SDK on a background thread.
              MobileAds.initialize(this, initializationStatus -> {});

              // Load an ad on the main thread.
              runOnUiThread(() -> loadAd());
            })
        .start();
  }
}
package com.google.android.gms.example.interstitialexample

import android.os.Bundle
import android.os.CountDownTimer
import android.util.Log
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.widget.PopupMenu
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.google.android.gms.ads.*
import com.google.android.gms.ads.interstitial.InterstitialAd
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback
import com.google.android.gms.example.interstitialexample.databinding.ActivityMainBinding
import java.util.concurrent.atomic.AtomicBoolean
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

class MainActivity : AppCompatActivity() {

  private val isMobileAdsInitializeCalled = AtomicBoolean(false)
  private lateinit var binding: ActivityMainBinding
  private lateinit var googleMobileAdsConsentManager: GoogleMobileAdsConsentManager
  private var interstitialAd: InterstitialAd? = null
  private var countdownTimer: CountDownTimer? = null
  private var gamePaused = false
  private var gameOver = false
  private var adIsLoading: Boolean = false
  private var timerMilliseconds = 0L

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityMainBinding.inflate(layoutInflater)
    val view = binding.root
    setContentView(view)

    // Log the Mobile Ads SDK version.
    Log.d(TAG, "Google Mobile Ads SDK Version: " + MobileAds.getVersion())

    googleMobileAdsConsentManager = GoogleMobileAdsConsentManager.getInstance(this)
    googleMobileAdsConsentManager.gatherConsent(this) { consentError ->
      if (consentError != null) {
        // Consent not obtained in current session.
        Log.w(TAG, "${consentError.errorCode}: ${consentError.message}")
      }

      // Kick off the first play of the "game".
      startGame()

      if (googleMobileAdsConsentManager.canRequestAds) {
        initializeMobileAdsSdk()
      }
      if (googleMobileAdsConsentManager.isPrivacyOptionsRequired) {
        // Regenerate the options menu to include a privacy setting.
        invalidateOptionsMenu()
      }
    }

    // This sample attempts to load ads using consent obtained in the previous session.
    if (googleMobileAdsConsentManager.canRequestAds) {
      initializeMobileAdsSdk()
    }

    // Create the "retry" button, which triggers an interstitial between game plays.
    binding.retryButton.visibility = View.INVISIBLE
    binding.retryButton.setOnClickListener { showInterstitial() }
  }

  override fun onCreateOptionsMenu(menu: Menu?): Boolean {
    menuInflater.inflate(R.menu.action_menu, menu)
    return super.onCreateOptionsMenu(menu)
  }

  override fun onOptionsItemSelected(item: MenuItem): Boolean {
    val menuItemView = findViewById<View>(item.itemId)
    val activity = this
    PopupMenu(this, menuItemView).apply {
      menuInflater.inflate(R.menu.popup_menu, menu)
      menu
        .findItem(R.id.privacy_settings)
        .setVisible(googleMobileAdsConsentManager.isPrivacyOptionsRequired)
      show()
      setOnMenuItemClickListener { popupMenuItem ->
        when (popupMenuItem.itemId) {
          R.id.privacy_settings -> {
            pauseGame()
            // Handle changes to user consent.
            googleMobileAdsConsentManager.showPrivacyOptionsForm(activity) { formError ->
              if (formError != null) {
                Toast.makeText(activity, formError.message, Toast.LENGTH_SHORT).show()
              }
              resumeGame()
            }
            true
          }
          R.id.ad_inspector -> {
            MobileAds.openAdInspector(activity) { error ->
              // Error will be non-null if ad inspector closed due to an error.
              error?.let { Toast.makeText(activity, it.message, Toast.LENGTH_SHORT).show() }
            }
            true
          }
          // Handle other branches here.
          else -> false
        }
      }
      return super.onOptionsItemSelected(item)
    }
  }

  private fun loadAd() {
    // Request a new ad if one isn't already loaded.
    if (adIsLoading || interstitialAd != null) {
      return
    }
    adIsLoading = true

    val adRequest = AdRequest.Builder().build()

    InterstitialAd.load(
      this,
      AD_UNIT_ID,
      adRequest,
      object : InterstitialAdLoadCallback() {
        override fun onAdFailedToLoad(adError: LoadAdError) {
          Log.d(TAG, adError.message)
          interstitialAd = null
          adIsLoading = false
          val error =
            "domain: ${adError.domain}, code: ${adError.code}, " + "message: ${adError.message}"
          Toast.makeText(
              this@MainActivity,
              "onAdFailedToLoad() with error $error",
              Toast.LENGTH_SHORT,
            )
            .show()
        }

        override fun onAdLoaded(ad: InterstitialAd) {
          Log.d(TAG, "Ad was loaded.")
          interstitialAd = ad
          adIsLoading = false
          Toast.makeText(this@MainActivity, "onAdLoaded()", Toast.LENGTH_SHORT).show()
        }
      },
    )
  }

  // Create the game timer, which counts down to the end of the level
  // and shows the "retry" button.
  private fun createTimer(milliseconds: Long) {
    countdownTimer?.cancel()

    countdownTimer =
      object : CountDownTimer(milliseconds, 50) {
        override fun onTick(millisUntilFinished: Long) {
          timerMilliseconds = millisUntilFinished
          binding.timer.text = "seconds remaining: ${ millisUntilFinished / 1000 + 1 }"
        }

        override fun onFinish() {
          gameOver = true
          binding.timer.text = "done!"
          binding.retryButton.visibility = View.VISIBLE
        }
      }

    countdownTimer?.start()
  }

  // Show the ad if it's ready. Otherwise restart the game.
  private fun showInterstitial() {
    if (interstitialAd != null) {
      interstitialAd?.fullScreenContentCallback =
        object : FullScreenContentCallback() {
          override fun onAdDismissedFullScreenContent() {
            Log.d(TAG, "Ad was dismissed.")
            // Don't forget to set the ad reference to null so you
            // don't show the ad a second time.
            interstitialAd = null
          }

          override fun onAdFailedToShowFullScreenContent(adError: AdError) {
            Log.d(TAG, "Ad failed to show.")
            // Don't forget to set the ad reference to null so you
            // don't show the ad a second time.
            interstitialAd = null
          }

          override fun onAdShowedFullScreenContent() {
            Log.d(TAG, "Ad showed fullscreen content.")
            // Called when ad is dismissed.
          }
        }
      interstitialAd?.show(this)
    } else {
      startGame()
      if (googleMobileAdsConsentManager.canRequestAds) {
        loadAd()
      }
    }
  }

  // Hide the button, and kick off the timer.
  private fun startGame() {
    binding.retryButton.visibility = View.INVISIBLE
    createTimer(GAME_LENGTH_MILLISECONDS)
    gamePaused = false
    gameOver = false
  }

  private fun pauseGame() {
    if (gameOver || gamePaused) {
      return
    }
    countdownTimer?.cancel()
    gamePaused = true
  }

  private fun resumeGame() {
    if (gameOver || !gamePaused) {
      return
    }
    createTimer(timerMilliseconds)
    gamePaused = true
  }

  private fun initializeMobileAdsSdk() {
    if (isMobileAdsInitializeCalled.getAndSet(true)) {
      return
    }

    // Set your test devices.
    MobileAds.setRequestConfiguration(
      RequestConfiguration.Builder().setTestDeviceIds(listOf(TEST_DEVICE_HASHED_ID)).build()
    )

    CoroutineScope(Dispatchers.IO).launch {
      // Initialize the Google Mobile Ads SDK on a background thread.
      MobileAds.initialize(this@MainActivity) {}
      runOnUiThread {
        // Load an ad on the main thread.
        loadAd()
      }
    }
  }

  // Resume the game if it's in progress.
  public override fun onResume() {
    super.onResume()
    resumeGame()
  }

  public override fun onPause() {
    super.onPause()
    pauseGame()
  }

  companion object {
    // This is an ad unit ID for a test ad. Replace with your own interstitial ad unit ID.
    private const val AD_UNIT_ID = "ca-app-pub-3940256099942544/1033173712"
    private const val GAME_LENGTH_MILLISECONDS = 3000L
    private const val TAG = "MainActivity"

    // Check your logcat output for the test device hashed ID e.g.
    // "Use RequestConfiguration.Builder().setTestDeviceIds(Arrays.asList("ABCDEF012345"))
    // to get test ads on this device" or
    // "Use new ConsentDebugSettings.Builder().addTestDeviceHashedId("ABCDEF012345") to set this as
    // a debug device".
    const val TEST_DEVICE_HASHED_ID = "ABCDEF012345"
  }
}

GitHub 上的示例

成功案例

后续步骤