Question

广告仅在应用启动前启用WI-FI时显示（如果在应用会话期间启用了Wi-Fi，则不会显示）。如何在可能的情况下加载Admob广告？我相信，这与AdListener有关。我目前的代码：

   adView.setAdListener(new AdListener() {
       @Override
       public void onAdLoaded() {
           adView.setVisibility(View.VISIBLE);
           super.onAdLoaded();
       }

       public void onAdFailedToLoad(int errorCode) {
           adView.setVisibility(View.GONE);
       }
   });

Answer 1

如果您的问题需要了解，我是否应根据互联网和GooglePlayServices等广告所需的条件加载广告，然后您可以使用以下方法：

public static boolean shouldLoadAd(Context context) {
        return (GooglePlayServicesUtil.isGooglePlayServicesAvailable(context) == ConnectionResult.SUCCESS && isNetworkAvailable(context));
    }

public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    }

方法shouldLoadAd会检查互联网和Googleplayservices是否可用，然后加载广告，否则不加载广告，如果返回false，则可以隐藏广告。

Answer 2

您需要一个BroadCastReceiver来知道网络状态何时更改，以便您可以加载您的添加内容。

public class NetworkChangeReceiver extends BroadcastReceiver {

public static final int TYPE_WIFI = 1;
public static final int TYPE_MOBILE = 2;
public static final int TYPE_NOT_CONNECTED = 0;
public static final int NETWORK_STATUS_NOT_CONNECTED = 0;
public static final int NETWORK_STATUS_WIFI = 1;
public static final int NETWORK_STATUS_MOBILE = 2;

@Override
public void onReceive(Context context, Intent intent) {
    int status = getConnectivityStatusString(context);

    if ("android.net.conn.CONNECTIVITY_CHANGE".equals(intent.getAction())) {
        if (status == NETWORK_STATUS_NOT_CONNECTED) {
            Log.i("Receiver","not connected");

        } else {
            Log.i("Receiver","connected");
            //If the connectivity changes while using the app and it is connected to a network you can load your adds.
            AddListener.initialiseAds(mAdView, adRequest);
        }
    }
}

public int getConnectivityStatusString(Context context) {
    int conn = getConnectivityStatus(context);
    int status = 0;
    if (conn == TYPE_WIFI ) {
        status = NETWORK_STATUS_WIFI;
    } else if (conn == TYPE_MOBILE ) {
        status = NETWORK_STATUS_MOBILE;
    } else if (conn == TYPE_NOT_CONNECTED) {
        status = NETWORK_STATUS_NOT_CONNECTED;
    }
    return status;
}

public int getConnectivityStatus(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    if (null != activeNetwork) {
        if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
            return TYPE_WIFI;

        if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
            return TYPE_MOBILE;
    }
    return TYPE_NOT_CONNECTED;
}}

然后我们有AddListener类

public final class AddListener {

private AddListener(){
}

public static void initialiseAds(final AdView mAdView, AdRequest adRequest) {
    mAdView.loadAd(adRequest);
    mAdView.setAdListener(new AdListener() {
        @Override
        public void onAdLoaded() {
            super.onAdLoaded();
            if (mAdView.getVisibility() == View.GONE) {
                mAdView.setVisibility(View.VISIBLE);
            }
            Log.i("Receiver","Add loaded");
            // Code to be executed when an ad finishes loading.
        }

        @Override
        public void onAdFailedToLoad(int errorCode) {
            super.onAdFailedToLoad(errorCode);
            mAdView.setVisibility(View.GONE);
            Log.i("Receiver","Add error "+errorCode);
            // Code to be executed when an ad request fails.
        }

        @Override
        public void onAdOpened() {
            Log.i("Receiver","Add opened");
            // Code to be executed when an ad opens an overlay that
            // covers the screen.
        }

        @Override
        public void onAdLeftApplication() {
            Log.i("Receiver","Add left app");
            // Code to be executed when the user has left the app.
        }

        @Override
        public void onAdClosed() {
            Log.i("Receiver","Add closed");
            // Code to be executed when when the user is about to return
            // to the app after tapping on an ad.
        }
    });
}}

在MainUI类中，我们执行以下操作：

public class MainUI extends AppCompatActivity {

...
public static AdView mAdView;
public static AdRequest adRequest;
...

@Override
protected void onDestroy() {

    if (mAdView != null) {
        mAdView.destroy();
    }
    super.onDestroy();
}


@Override
protected void onResume() {
    super.onResume();
    if(mAdView!=null){  // Check if Adview is not null in case of fist time load.
        mAdView.resume();}
}

@Override
protected void onPause() {
    if (mAdView != null) {
        mAdView.pause();
        Log.i("pause","pause view");
    }
    super.onPause();
}



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

    MobileAds.initialize(this, "ca-app-pub-3940256099942544~3347511713");
    mAdView = (AdView) findViewById(R.id.adView);
    mAdView.setVisibility(View.GONE);
    adRequest = new AdRequest.
            Builder()
            .addTestDevice("DDF43F508E61CBB2ACA96D879C66AB42")
            .build();
    AddListener.initialiseAds(mAdView,adRequest);

    ...} }

还请记住在清单中注册您的BroadcastReceiver

<receiver
        android:name=".utils.NetworkTools.NetworkChangeReceiver"
        android:label="NetworkChangeReceiver" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
        </intent-filter>
    </receiver>

并要求这些权限：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

如何在可能的情况下加载Admob广告？

2 个答案: