Google Admob Ad 在加载插页式广告时崩溃应用

Posted 2023-04-18

【中文标题】Google Admob Ad 在加载插页式广告时崩溃应用

【英文标题】：Google Admob Ad crashes app while loading interstitial ad

【发布时间】：2021-12-25 16:13:51

【问题描述】：

我的应用在加载 Google Admob 广告时崩溃。它工作了很长时间，但现在我收到以下错误： java.lang.NullPointerException：尝试在空对象引用上调用虚拟方法“void com.google.android.gms.ads.interstitial.InterstitialAd.setFullScreenContentCallback(com.google.android.gms.ads.FullScreenContentCallback)”

我没有更改任何代码，我的应用程序在 Play 商店中，并且我的 Galaxy S10 上有该应用程序并且它一直有效，但现在如果必须加载广告，我会收到此错误。有人可以帮忙吗？ 谢谢

编辑：这是我的代码

  @Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    MobileAds.initialize(this, new OnInitializationCompleteListener() 
        @Override
        public void onInitializationComplete(InitializationStatus initializationStatus) 
        
    );

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

    InterstitialAd.load(this,"ca-app-pub-93706071examplenumber/4141725063", adRequest, new InterstitialAdLoadCallback() 
        @Override
        public void onAdLoaded(@NonNull InterstitialAd interstitialAd) 
           
            mInterstitialAd = interstitialAd;
            Log.i("TAG", "onAdLoaded");
        

        @Override
        public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) 
            
            Log.i("TAG", "onAdLoaded");
            mInterstitialAd = null;
        
    );












private void showInterstitial()

    if (callbackActive == false)
        setCallback();
    


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



private void setCallback()
    callbackActive = true;
    mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback()
        @Override
        public void onAdDismissedFullScreenContent() 
       
            Log.d("TAG", "The ad was dismissed.");

        

        @Override
        public void onAdFailedToShowFullScreenContent(AdError adError) 
    
            Log.d("TAG", "The ad failed to show.");
        

        @Override
        public void onAdShowedFullScreenContent() 
      
            mInterstitialAd = null;
            Log.d("TAG", "The ad was shown.");
        
    );

【问题讨论】：

请添加您用于展示广告的代码

我有问题地添加了它。问候

【参考方案1】：

将setFullScreenContentCallback 放入onAdLoaded 这是一个代码 sn-p（参见下面的代码）并查看来自AdMob official sample on GitHub的完整代码

public void loadAd() 
    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;
            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.");
                  
                );
          

【讨论】：

@OSbOoL 这有帮助吗？