Question

首先，对不起我的英语不好。

当我构建apk并尝试在手机中打开apk时，会出现apk has stoped working. The ad unit ID must be set on InterstitialAd before loadAd is called错误。

我在做什么错？谢谢。

public class MainActivity extends AppCompatActivity {

private AdView mAdView;
private InterstitialAd mInterstitialAd;

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

    mAdView = (AdView) findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);


    MobileAds.initialize(this, "ca-app-pub-9823610014389662~4002090629");
    mInterstitialAd = new InterstitialAd(MainActivity.this);
    mInterstitialAd.setAdUnitId("ca-app-pub-9823610014389662/2024107626");
    mInterstitialAd.loadAd(adRequest);
    mInterstitialAd.setAdListener(new AdListener() {
        public void onAdLoaded() {
            displayInterstitial();
        }

    });
}

public void displayInterstitial() {

    if (mInterstitialAd.isLoaded()) {
        mInterstitialAd.show();
    }
}

Answer 1

如果logcat指出问题仅是由于非页内广告引起的，请尝试以下操作：

更简单且经过测试的方式-可以满足95-98％的广告请求

InterstitialAd interstitialAd = null;

然后将其放入onCreate()

interstitialAd = new InterstitialAd(this);
interstitialAd.setAdUnitId(getString(R.string.your_interstitial_string_name);
AdRequest adRequest = new AdRequest.Builder().build();
interstitialAd.loadAd(adRequest);

我更喜欢将其命名为onBackPressed()，您可以根据需要对其进行调整。

@Override
    public void onBackPressed() {
        if (interstitialAd.isLoaded()) {
            interstitialAd.show();
            interstitialAd.setAdListener(new AdListener() {
                @Override
                public void onAdClosed() {
                    super.onAdClosed();
                    finish();
                }
            });
        } else {
            super.onBackPressed();
        }
    }

此外，请不要忘记将字符串值放入strings.xml文件中

<string name="your_interstitial_string_name">ca-app-pub-9823610014389662/2024107626</string>

必须在InterstitialAd上设置广告单元ID，然后再将loadAd称为错误

1 个答案: