如何知道AdMob广告是否已加载

Question

我的Andorid应用程序离线和在线工作.它在在线模式下显示广告.在它处于离线模式并且用户打开互联网连接的情况下,我想知道广告是否已经加载.如果没有,那么我会加载一个新广告.我查看了AdMob API(AdView类)但无法找到执行此操作的内容.

AdListener根据@Hounshell的回答,这是我的实现.但是这里实现的方法都没有被执行.

        adView.setAdListener(new AdListener() {

        @Override
        public void onReceiveAd(Ad arg0) {
            Toast.makeText(act, "Ad received",Toast.LENGTH_LONG).show();
        }

        @Override
        public void onPresentScreen(Ad arg0) {
        }

        @Override
        public void onLeaveApplication(Ad arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onFailedToReceiveAd(Ad arg0, ErrorCode arg1) {
            Toast.makeText(act, "Failed to receive Ad",Toast.LENGTH_LONG).show();
        }

        @Override
        public void onDismissScreen(Ad arg0) {
            // TODO Auto-generated method stub

        }
    });

以及涵盖AdView的main.xml的一部分

<FrameLayout 
                    android:layout_width="fill_parent"
                    android:layout_height="50dp"
                    >
                <com.google.ads.AdView
                    xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
                    android:id="@+id/adView"
                    android:layout_width="fill_parent"
                    android:layout_height="fill_parent"
                    ads:adSize="BANNER"
                    ads:adUnitId="xxxxxxxxxxxxxxxx"
                    ads:loadAdOnCreate="true" />
                </FrameLayout>

Answer 1

来自https://developers.google.com/mobile-ads-sdk/docs/android/intermediate#adlistener

AdView.setAdListener(new AdListener() {
      // Implement AdListener
    });

onReceiveAd()当广告可用时,系统onFailedToReceiveAd()会调用您的AdListener,如果广告不可用,则会调用广告代码解释原因(包括网络不可用且无填充)

更新:

相同的基本答案,新网址:https://developers.google.com/admob/android/banner？hl = en

Answer 2

简单地...！！！

final AdView mAdView = (AdView) findViewById(R.id.adView);
        mAdView.setVisibility(View.GONE);
    mAdView.setAdListener(new AdListener() {
        private void showToast(String message) {
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onAdLoaded() {
            showToast("Ad loaded.");
            if (mAdView.getVisibility() == View.GONE) {
                mAdView.setVisibility(View.VISIBLE);
            }
        }

        @Override
        public void onAdFailedToLoad(int errorCode) {
            showToast(String.format("Ad failed to load with error code %d.", errorCode));
        }

        @Override
        public void onAdOpened() {
            showToast("Ad opened.");
        }

        @Override
        public void onAdClosed() {
            showToast("Ad closed.");
        }

        @Override
        public void onAdLeftApplication() {
            showToast("Ad left application.");
        }
    });


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

Answer 3

我通过一些解决方法解决了这个问题。我第一次检查是否AdView有空标签。

if (adView.getTag() != null && adView.getTag() instanceof Boolean && (Boolean) adView.getTag()) {
        //Adview is already loaded
    }

如果 adView 有一个Boolean标签对象并且它是真的，那么广告已经加载，否则加载广告并设置标签 -

adView.setAdListener(new AdListener() {
            @Override
            public void onAdLoaded() {
                super.onAdLoaded();
                adView.setTag(true); // Set tag true if adView is loaded
            }

            @Override
            public void onAdFailedToLoad(int i) {
                super.onAdFailedToLoad(i);
                adView.setTag(false); // Set tag false if loading failed
            }
        });