Implement AdMob Adaptive Banner Ads Flutter

AdMob Adaptive Banner Ads are small rectangular ads that appear at the top or bottom of the screen. These ads are very easy to integrate into mobile apps without disturbing the user experience. Basically, AdMob provides different banner sizes, including adaptive banners that fit to the screen sizes of different devices.

 

 

Adaptive banners are improved versions of banner ads. It automatically adjusts to fit the screen size of any device. It looks good and is flexible for any device without hurting the user experience. In this article, we will see how to implement AdMob Adaptive Banner Ads in your Flutter project. We will also discuss different banner ad sizes, including adaptive banner ads for responsive design.

How to Implement AdMob Adaptive Banner Ads in Flutter?

To implement adaptive banners in your Flutter project, we will see a step-by-step guide below:

Step 1: Modify the pubspec.yaml file

dependencies:
  flutter:
    sdk: flutter


  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.6
  google_mobile_ads: 5.1.0


  # To add assets to your application, add an assets section, like this:
  assets:
      - images/

Step 2: Modify the main.dart file

Import the necessary header file on top of the main dart file.

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

Step 3: Initialize Google Mobile Ads SDK in main function

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  MobileAds.instance.initialize();
  runApp(const AdaptiveBannerAd());
}

Step 4: Initialize the anchoredAdaptiveAd object of the BannerAd class

BannerAd? _anchoredAdaptiveAd;

Step 5: Load and Show Adaptive Banner Ad

Future<void> loadAdaptiveBannerAd() async {
    final AnchoredAdaptiveBannerAdSize? size =
    await AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(
        MediaQuery.of(context).size.width.truncate());

    if (size == null) {
      print('Unable to get height of anchored banner.');
      return;
    }

    _anchoredAdaptiveAd = BannerAd(
      // TODO: replace these test ad units with your own ad unit.
      adUnitId: Platform.isAndroid
          ? 'ca-app-pub-3940256099942544/6300978111'
          : 'ca-app-pub-3940256099942544/2934735716',
      size: size,
      request: const AdRequest(),
      listener: BannerAdListener(
        onAdLoaded: (Ad ad) {
          print('$ad loaded: ${ad.responseInfo}');
          setState(() {
            // When the ad is loaded, get the ad size and use it to set
            // the height of the ad container.
            _anchoredAdaptiveAd = ad as BannerAd;
            _isLoaded = true;
          });
        },
        onAdFailedToLoad: (Ad ad, LoadAdError error) {
          print('Anchored adaptive banner failedToLoad: $error');
          ad.dispose();
        },
      ),
    );
    return _anchoredAdaptiveAd!.load();
  }

Step 6: Modify AndroidManifest.xml

Add test AdMob AppId to your in Android Manifest file by adding the <meta-data> tag inside the <application> tag.

<manifest> 
          <application> 
                      <meta-data
                               android:name="com.google.android.gms.ads.APPLICATION_ID"
                               android:value="ca-app-pub-3940256099942544~3347511713" />
          </application> 
</manifest>

Step 7: Modify Modify info.plist

Add Admob App ID in the info.plist file.

<key>GADApplicationIdentifier</key>
<string>ca-app-pub-3940256099942544~1458002511</string>

Step 8: AdMob Adaptive Banner Ads in Flutter With Example (Full Code) 

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  MobileAds.instance.initialize();
  runApp(const AdaptiveBannerAd());
}

class AdaptiveBannerAd extends StatelessWidget {
  const AdaptiveBannerAd({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'AdMob Adaptive Banner',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.indigo),
        useMaterial3: true,
      ),
      debugShowCheckedModeBanner: false,
      home: const BannerAdClass(title: 'Flutter Admob Banner Example'),
    );
  }
}

class BannerAdClass extends StatefulWidget {
  const BannerAdClass({super.key, required this.title});

  final String title;

  @override
  State<BannerAdClass> createState() => _BannerAdClassState();
}

class _BannerAdClassState extends State<BannerAdClass> {
  BannerAd? _anchoredAdaptiveAd;
  bool _isLoaded = false;

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    loadAdaptiveBannerAd();
  }

// Declare here -> loadAdaptiveBannerAd() [See step 5]
  

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: SafeArea(
        bottom: true,
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
               Column(
                mainAxisAlignment: MainAxisAlignment.start,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: <Widget>[
                  const SizedBox(height: 50),
                  const Text(
                    'Display AdMob Banners Responsive Ad Sizes',
                    textAlign: TextAlign.center,
                    style: TextStyle(
                        fontSize: 18,
                        fontWeight: FontWeight.w600,
                        color: Colors.black),
                  ),
                  const SizedBox(height: 20),
                  SizedBox(
                    height: 200,
                    width: 350,
                    child: Image.asset(
                      "images/banner.png",
                      fit: BoxFit.fitHeight,
                    ),
                  ),

                ],
              ),
              if (_anchoredAdaptiveAd != null && _isLoaded)
                Container(
                  color: Colors.indigo,
                  width: _anchoredAdaptiveAd!.size.width.toDouble(),
                  height: _anchoredAdaptiveAd!.size.height.toDouble(),
                  child: AdWidget(ad: _anchoredAdaptiveAd!),
                )
            ],
          ),
        ),
      ),

    );
  }
  @override
  void dispose() {
    super.dispose();
    _anchoredAdaptiveAd?.dispose();
  }
}

Step 9: Run the project!

Output for Android device and iPhone 15 simulator

 

AdMob Banner Sizes

There are the most common AdMob banner sizes described below:

1. Standard Banner: It displays with a 320*50 format size for smartphones.
2. Large Banner: It displays slightly larger than standard size. It will display on high-resolution devices.
3. Adaptive Banner: It automatically adjusts to fit the screen. It is making it responsive to different devices.

 

Benefits of Using AdMob Banner Ads

There are so many benefits of using AdMob banner ads described as below:

1. Easy to implement: It is very easy to configure in your Flutter project.
2. Non-Disturbance: It displays very little area. It seems to not disturb the user during interaction.
3. Flexible sizes: You can choose from various sizes, including adaptive banners.
4. High revenue generation: banners can generate high revenue without annoying users.

 

Conclusion

In the last, integrating AdMob banner ads to your Flutter app is a great way to monetize it. With adaptive banners, you can see that all ads are perfectly displayed with fit to screen width. Your app also looks like a professional with high earning potential. Make sure that you have to use test ad IDs before going live. As compared with Collapsible banner ads, both are similar. The only difference is that these ads show in collapsible mode after loading on screen. Happy Coding!

Frequently Asked Questions(FAQs)