Android/広告組込/google/admob/バナーのソースを表示

==公式==
https://developers.google.com/admob/android/banner?hl=ja

==レイアウト==
main_activity.xml
<pre>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:paddingBottom="@dimen/activity_vertical_margin"
        tools:context=".MainActivity">

        <TextView android:text="@string/hello_world"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <com.google.android.gms.ads.AdView
            xmlns:ads="http://schemas.android.com/apk/res-auto"
            android:id="@+id/adView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_alignParentBottom="true"
            ads:adSize="BANNER"
            ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
        </com.google.android.gms.ads.AdView>

</RelativeLayout>
</pre>

==サイズ設定とunitId設定==
<pre>
AdView adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId("ca-app-pub-3940256099942544/6300978111");
</pre>

==ロード処理==
<pre>
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;

public class MainActivity extends AppCompatActivity {
    private AdView mAdView;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        MobileAds.initialize(this, new OnInitializationCompleteListener() {
            @Override
            public void onInitializationComplete(InitializationStatus initializationStatus) {
            }
        });
        mAdView = findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }
}
</pre>

==イベント周り==
<pre>
mAdView.setAdListener(new AdListener() {
    @Override
    public void onAdLoaded() {
        // Code to be executed when an ad finishes loading.
    }

    @Override
    public void onAdFailedToLoad(int errorCode) {
        // Code to be executed when an ad request fails.
    }

    @Override
    public void onAdOpened() {
        // Code to be executed when an ad opens an overlay that
        // covers the screen.
    }

    @Override
    public void onAdClicked() {
        // Code to be executed when the user clicks on an ad.
    }

    @Override
    public void onAdLeftApplication() {
        // Code to be executed when the user has left the app.
    }

    @Override
    public void onAdClosed() {
        // Code to be executed when the user is about to return
        // to the app after tapping on an ad.
    }
});
</pre>

==AdManagerからAdMobへ変換==
*setAdSizes()をsetAdSize()へ
*com.google.android.gms.ads.doubleclick.PublisherAdView を com.google.android.gms.ads.AdView へ
*com.google.android.gms.ads.doubleclick.PublisherAdRequest を com.google.android.gms.ads.AdRequest へ

*PublisherAdRequestをAdRequestへ
*PublisherInterstitialAdをInterstitialAdへ

==タブレットのサイズ==
タブレット端末のディスプレイサイズのdisplaysize.y + 1まで広告は表示されるが、displaysize.y + 2で表示されなくなり、"Ad failed to load : 1"のエラーログが発生するようになる。

ディスプレイサイズの定義はここらへん参考に
https://akira-watson.com/android/theme-notitlebar.html

==TestDevice==
テスト端末として認識させる。idは端末ごとに違う。admobに接続してlogcatで確認できる。
<pre>
AdRequest request = new AdRequest.Builder()
.addTestDevice("33BE2250B43518CCDA7DE426D04Exxxx")
.build();
</pre>

or
<pre>
AdRequest.Builder adRequestBuilder = new AdRequest.Builder();
adRequestBuilder.addTestDevice("33BE2250B43518CCDA7DE426D04xxxx");
AdRequest adRequest = adRequestBuilder.build();
</pre>
==TestDevice(19.0.0以降)==
<pre>
List<String> testDevices = new ArrayList<>();
testDevices.add(AdRequest.DEVICE_ID_EMULATOR);
RequestConfiguration requestConfiguration
    = new RequestConfiguration.Builder()
        .setTestDeviceIds(testDevices)
        .build();
MobileAds.setRequestConfiguration(requestConfiguration);
AdRequest.Builder().build();
</pre>

参考：https://stackoverflow.com/questions/60539407/after-updating-google-ads-sdk-addtestdevice-is-deprecated-how-to-resolve

=="java.lang.IllegalStateException: The ad size can only be set once on AdView."エラーが出る場合== 
２回以上AdSizeを設定しているので、一度入れたら設定しないようにする。
 mAdView = new AdView(this);
 if (mAdView.getAdSize() == null) {
     mAdView.setAdSize(AdSize.BANNER);
 }
 if (mAdView.getAdUnitId() == null) {
     mAdView.setAdUnitId("ca-app-pub-1234hogehogehogehoge/1234hoge");
 }