如果已经加载，如何避免加载 Admob 插页式广告？

Question

我在 baseactivity 的 oncreate 方法中加载插页式广告，这个 baseactivity 被应用程序的所有其他活动扩展，所以每次我开始一个新的 activity正在加载一个新的插页式广告，即使已经加载了一个。

private InterstitialAd mInterstitialAd;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        createAd();
}

    public void createAd () {

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

        InterstitialAd.load(BaseActivity.this, "ca-app-pub-3940256099942544/8691691433", adRequest, new InterstitialAdLoadCallback() {

            @Override
            public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
                Toast.makeText(BaseActivity.this, "Ad Loaded",
                        Toast.LENGTH_LONG).show();
                mInterstitialAd = interstitialAd;
                mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback(){
                    @Override
                    public void onAdDismissedFullScreenContent() {
                        // Called when fullscreen content is dismissed.
                        Toast.makeText(BaseActivity.this, "fullscreen content is dismissed.",
                                Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onAdFailedToShowFullScreenContent(AdError adError) {
                        // Called when fullscreen content failed to show.
                        Toast.makeText(BaseActivity.this, "fullscreen content failed to show.",
                                Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onAdShowedFullScreenContent() {
                        // Called when fullscreen content is shown.
                        // Make sure to set your reference to null so you don't
                        // show it a second time.
                        mInterstitialAd = null;
                        Toast.makeText(BaseActivity.this, "fullscreen content is shown.",
                                Toast.LENGTH_LONG).show();
                    }
                });
            }

            @Override
            public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                Toast.makeText(BaseActivity.this, "Ad Failed to Load",
                        Toast.LENGTH_LONG).show();
            }

        });

    }

如何在第一次创建基础 activity 时只加载一次？

Answer 1

在你的代码中，扩展基础 activity 的每个 activity 包含它自己的 InterstitialAd 的实例，如果你认为如果你创建基础 activity 所以 InterstitialAd 将在你所有的活动中共享你错了（阅读继承）。

一个快速的破解方法是创建 InterstitialAd static，更好的方法是创建单例 class 或包含 InterstitialAd，甚至您可以附加 InterstitialAd 到您的应用程序 class，它本身就是一个实例。

如果已经加载，如何避免加载 Admob 插页式广告？

How to Avoid Loading Admob Interstitial Ad if One is Already Loaded?

java

android

android-activity

admob