Serve multiple ad types with a single AdLoaderAd widget

packages/google_mobile_ads/android/src/main/java/io/flutter/plugins/googlemobileads/AdMessageCodec.java

@@ -68,6 +68,10 @@ class AdMessageCodec extends StandardMessageCodec {
   private static final byte VALUE_NATIVE_TEMPLATE_TYPE = (byte) 152;
   private static final byte VALUE_COLOR = (byte) 153;
   private static final byte VALUE_MEDIATION_EXTRAS = (byte) 154;
+  private static final byte VALUE_AD_MANAGER_AD_VIEW_OPTIONS = (byte) 155;
+  private static final byte VALUE_BANNER_PARAMETERS = (byte) 156;
+  private static final byte VALUE_CUSTOM_PARAMETERS = (byte) 157;
+  private static final byte VALUE_NATIVE_PARAMETERS = (byte) 158;
 
   @NonNull Context context;
   @NonNull final FlutterAdSize.AdSizeFactory adSizeFactory;
@@ -253,6 +257,26 @@ protected void writeValue(ByteArrayOutputStream stream, Object value) {
       writeValue(stream, Color.red(colorValue));
       writeValue(stream, Color.green(colorValue));
       writeValue(stream, Color.blue(colorValue));
+    } else if (value instanceof FlutterAdManagerAdViewOptions) {
+      stream.write(VALUE_AD_MANAGER_AD_VIEW_OPTIONS);
+      FlutterAdManagerAdViewOptions options = (FlutterAdManagerAdViewOptions) value;
+      writeValue(stream, options.manualImpressionsEnabled);
+    } else if (value instanceof FlutterBannerParameters) {
+      stream.write(VALUE_BANNER_PARAMETERS);
+      FlutterBannerParameters bannerParameters = (FlutterBannerParameters) value;
+      writeValue(stream, bannerParameters.sizes);
+      writeValue(stream, bannerParameters.adManagerAdViewOptions);
+    } else if (value instanceof FlutterCustomParameters) {
+      stream.write(VALUE_CUSTOM_PARAMETERS);
+      FlutterCustomParameters customParameters = (FlutterCustomParameters) value;
+      writeValue(stream, customParameters.formatIds);
+      writeValue(stream, customParameters.viewOptions);
+    } else if (value instanceof FlutterNativeParameters) {
+      stream.write(VALUE_NATIVE_PARAMETERS);
+      FlutterNativeParameters nativeParameters = (FlutterNativeParameters) value;
+      writeValue(stream, nativeParameters.factoryId);
+      writeValue(stream, nativeParameters.nativeAdOptions);
+      writeValue(stream, nativeParameters.viewOptions);
     } else {
       super.writeValue(stream, value);
     }
@@ -434,6 +458,21 @@ protected Object readValueOfType(byte type, ByteBuffer buffer) {
         final Integer green = (Integer) readValueOfType(buffer.get(), buffer);
         final Integer blue = (Integer) readValueOfType(buffer.get(), buffer);
         return new ColorDrawable(Color.argb(alpha, red, green, blue));
+      case VALUE_AD_MANAGER_AD_VIEW_OPTIONS:
+        return new FlutterAdManagerAdViewOptions((Boolean) readValueOfType(buffer.get(), buffer));
+      case VALUE_BANNER_PARAMETERS:
+        return new FlutterBannerParameters(
+            (List<FlutterAdSize>) readValueOfType(buffer.get(), buffer),
+            (FlutterAdManagerAdViewOptions) readValueOfType(buffer.get(), buffer));
+      case VALUE_CUSTOM_PARAMETERS:
+        return new FlutterCustomParameters(
+            (List<String>) readValueOfType(buffer.get(), buffer),
+            (Map<String, Object>) readValueOfType(buffer.get(), buffer));
+      case VALUE_NATIVE_PARAMETERS:
+        return new FlutterNativeParameters(
+            (String) readValueOfType(buffer.get(), buffer),
+            (FlutterNativeAdOptions) readValueOfType(buffer.get(), buffer),
+            (Map<String, Object>) readValueOfType(buffer.get(), buffer));
       default:
         return super.readValueOfType(type, buffer);
     }

packages/google_mobile_ads/android/src/main/java/io/flutter/plugins/googlemobileads/FlutterAdListener.java

@@ -16,8 +16,12 @@
 import androidx.annotation.NonNull;
 import com.google.android.gms.ads.AdListener;
 import com.google.android.gms.ads.LoadAdError;
+import com.google.android.gms.ads.admanager.AdManagerAdView;
+import com.google.android.gms.ads.formats.OnAdManagerAdViewLoadedListener;
 import com.google.android.gms.ads.nativead.NativeAd;
 import com.google.android.gms.ads.nativead.NativeAd.OnNativeAdLoadedListener;
+import com.google.android.gms.ads.nativead.NativeCustomFormatAd;
+import com.google.android.gms.ads.nativead.NativeCustomFormatAd.OnCustomFormatAdLoadedListener;
 import java.lang.ref.WeakReference;
 
 /** Callback type to notify when an ad successfully loads. */
@@ -94,19 +98,61 @@ public void onAdLoaded() {
   }
 }
 
+/** Listener for adloader ads. */
+class FlutterAdLoaderAdListener extends FlutterAdListener {
+
+  FlutterAdLoaderAdListener(int adId, AdInstanceManager manager) {
+    super(adId, manager);
+  }
+}
+
 /** {@link OnNativeAdLoadedListener} for native ads. */
 class FlutterNativeAdLoadedListener implements OnNativeAdLoadedListener {
 
-  private final WeakReference<FlutterNativeAd> nativeAdWeakReference;
+  private final WeakReference<OnNativeAdLoadedListener> listenerWeakReference;
 
-  FlutterNativeAdLoadedListener(FlutterNativeAd flutterNativeAd) {
-    nativeAdWeakReference = new WeakReference<>(flutterNativeAd);
+  FlutterNativeAdLoadedListener(OnNativeAdLoadedListener listener) {
+    listenerWeakReference = new WeakReference<>(listener);
   }
 
   @Override
   public void onNativeAdLoaded(@NonNull NativeAd nativeAd) {
-    if (nativeAdWeakReference.get() != null) {
-      nativeAdWeakReference.get().onNativeAdLoaded(nativeAd);
+    if (listenerWeakReference.get() != null) {
+      listenerWeakReference.get().onNativeAdLoaded(nativeAd);
+    }
+  }
+}
+
+/** {@link OnAdManagerAdViewLoadedListener} for banner ads. */
+class FlutterAdManagerAdViewLoadedListener implements OnAdManagerAdViewLoadedListener {
+
+  private final WeakReference<OnAdManagerAdViewLoadedListener> reference;
+
+  FlutterAdManagerAdViewLoadedListener(OnAdManagerAdViewLoadedListener listener) {
+    reference = new WeakReference<>(listener);
+  }
+
+  @Override
+  public void onAdManagerAdViewLoaded(AdManagerAdView adView) {
+    if (reference.get() != null) {
+      reference.get().onAdManagerAdViewLoaded(adView);
+    }
+  }
+}
+
+/** {@link OnCustomFormatAdLoadedListener} for custom ads. */
+class FlutterCustomFormatAdLoadedListener implements OnCustomFormatAdLoadedListener {
+
+  private final WeakReference<OnCustomFormatAdLoadedListener> reference;
+
+  FlutterCustomFormatAdLoadedListener(OnCustomFormatAdLoadedListener listener) {
+    reference = new WeakReference<>(listener);
+  }
+
+  @Override
+  public void onCustomFormatAdLoaded(NativeCustomFormatAd ad) {
+    if (reference.get() != null) {
+      reference.get().onCustomFormatAdLoaded(ad);
     }
   }
 }

packages/google_mobile_ads/android/src/main/java/io/flutter/plugins/googlemobileads/FlutterAdLoader.java

@@ -16,6 +16,7 @@
 
 import android.content.Context;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import com.google.android.gms.ads.AdListener;
 import com.google.android.gms.ads.AdLoader;
 import com.google.android.gms.ads.AdRequest;
@@ -137,4 +138,62 @@ public void loadAdManagerNativeAd(
         .build()
         .loadAd(adManagerAdRequest);
   }
+
+  /** Load an ad loader ad. */
+  public void loadAdLoaderAd(
+      @NonNull String adUnitId,
+      @NonNull AdListener adListener,
+      @NonNull AdRequest request,
+      @Nullable FlutterAdLoaderAd.BannerParameters bannerParameters,
+      @Nullable FlutterAdLoaderAd.CustomParameters customParameters,
+      @Nullable FlutterAdLoaderAd.NativeParameters nativeParameters) {
+    AdLoader.Builder builder = new AdLoader.Builder(context, adUnitId);
+    if (bannerParameters != null) {
+      builder = builder.forAdManagerAdView(bannerParameters.listener, bannerParameters.adSizes);
+      if (bannerParameters.adManagerAdViewOptions != null) {
+        builder.withAdManagerAdViewOptions(bannerParameters.adManagerAdViewOptions);
+      }
+    }
+    if (customParameters != null) {
+      for (String formatId : customParameters.factories.keySet()) {
+        builder = builder.forCustomFormatAd(formatId, customParameters.listener, null);
+      }
+    }
+    if (nativeParameters != null) {
+      builder = builder.forNativeAd(nativeParameters.listener);
+      if (nativeParameters.nativeAdOptions != null) {
+        builder = builder.withNativeAdOptions(nativeParameters.nativeAdOptions);
+      }
+    }
+    builder.withAdListener(adListener).build().loadAd(request);
+  }
+
+  /** Load an ad manager ad loader ad. */
+  public void loadAdManagerAdLoaderAd(
+      @NonNull String adUnitId,
+      @NonNull AdListener adListener,
+      @NonNull AdManagerAdRequest adManagerAdRequest,
+      @Nullable FlutterAdLoaderAd.BannerParameters bannerParameters,
+      @Nullable FlutterAdLoaderAd.CustomParameters customParameters,
+      @Nullable FlutterAdLoaderAd.NativeParameters nativeParameters) {
+    AdLoader.Builder builder = new AdLoader.Builder(context, adUnitId);
+    if (bannerParameters != null) {
+      builder = builder.forAdManagerAdView(bannerParameters.listener, bannerParameters.adSizes);
+      if (bannerParameters.adManagerAdViewOptions != null) {
+        builder.withAdManagerAdViewOptions(bannerParameters.adManagerAdViewOptions);
+      }
+    }
+    if (customParameters != null) {
+      for (String formatId : customParameters.factories.keySet()) {
+        builder = builder.forCustomFormatAd(formatId, customParameters.listener, null);
+      }
+    }
+    if (nativeParameters != null) {
+      builder = builder.forNativeAd(nativeParameters.listener);
+      if (nativeParameters.nativeAdOptions != null) {
+        builder = builder.withNativeAdOptions(nativeParameters.nativeAdOptions);
+      }
+    }
+    builder.withAdListener(adListener).build().loadAd(adManagerAdRequest);
+  }
 }