feat(admob, android): add adaptive banner support (#4840)

* added support for adaptive banner

Co-authored-by: Mike Hardy <github@mikehardy.net>

packages/admob/android/src/main/java/io/invertase/firebase/admob/ReactNativeFirebaseAdMobBannerAdViewManager.java

@@ -96,7 +96,7 @@ public void setRequest(ReactViewGroup reactViewGroup, ReadableMap value) {
 
   @ReactProp(name = "size")
   public void setSize(ReactViewGroup reactViewGroup, String value) {
-    size = ReactNativeFirebaseAdMobCommon.stringToAdSize(value);
+    size = ReactNativeFirebaseAdMobCommon.getAdSize(value, reactViewGroup);
 
     int width;
     int height;

packages/admob/android/src/main/java/io/invertase/firebase/admob/ReactNativeFirebaseAdMobCommon.java

@@ -20,10 +20,15 @@
 
 import android.location.Location;
 import android.os.Bundle;
+import android.util.DisplayMetrics;
+import android.view.Display;
+
 import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.views.view.ReactViewGroup;
 import com.google.ads.mediation.admob.AdMobAdapter;
 import com.google.android.gms.ads.AdRequest;
 import com.google.android.gms.ads.AdSize;
@@ -39,6 +44,29 @@
 
 public class ReactNativeFirebaseAdMobCommon {
 
+  static AdSize getAdSizeForAdaptiveBanner(ReactViewGroup reactViewGroup) {
+
+    try {
+      Display display = Objects.requireNonNull(((ReactContext) reactViewGroup.getContext()).getCurrentActivity()).getWindowManager().getDefaultDisplay();
+
+      DisplayMetrics outMetrics = new DisplayMetrics();
+      display.getMetrics(outMetrics);
+      int adWidth = (int) (outMetrics.widthPixels / outMetrics.density);
+
+      return AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(reactViewGroup.getContext(), adWidth);
+    } catch (Exception e) {
+      return AdSize.BANNER;
+    }
+  }
+
+  static AdSize getAdSize(String preDefinedAdSize, ReactViewGroup reactViewGroup) {
+    if ("ADAPTIVE_BANNER".equals(preDefinedAdSize)) {
+      return ReactNativeFirebaseAdMobCommon.getAdSizeForAdaptiveBanner(reactViewGroup);
+    } else {
+      return ReactNativeFirebaseAdMobCommon.stringToAdSize(preDefinedAdSize);
+    }
+  }
+
   static AdSize stringToAdSize(String value) {
     Pattern pattern = Pattern.compile("([0-9]+)x([0-9]+)");
     Matcher matcher = pattern.matcher(value);

packages/admob/lib/index.d.ts

@@ -239,8 +239,6 @@ export namespace FirebaseAdMobTypes {
 
     /**
      * A (next generation) dynamically sized banner that is full-width and auto-height.
-     *
-     * iOS only
      */
     ADAPTIVE_BANNER: 'ADAPTIVE_BANNER';