如何使用Android Studio将Admob banner添加到本机代码中的所有活动？

classpath 'com.google.gms:google-services:4.3.10'

implementation 'com.google.android.gms:play-services-ads:20.4.0'

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

<com.google.android.gms.ads.AdView
    android:id="@+id/adView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    ads:adSize="BANNER"
    ads:adUnitId="YOUR_AD_UNIT_ID"
    />

import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;

public class MainActivity extends AppCompatActivity {
    private AdView mAdView;

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

        // 在onCreate方法中初始化广告视图
        mAdView = findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }

    @Override
    protected void onPause() {
        // 在onPause方法中暂停广告视图
        if (mAdView != null) {
            mAdView.pause();
        }
        super.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();
        // 在onResume方法中恢复广告视图
        if (mAdView != null) {
            mAdView.resume();
        }
    }

    @Override
    protected void onDestroy() {
        // 在onDestroy方法中销毁广告视图
        if (mAdView != null) {
            mAdView.destroy();
        }
        super.onDestroy();
    }
}