How to Integrate AdMob Ads in your Flutter app using firebase_admob package ?

In this guide, we will learn how to integrate AdMob Ads in your flutter app using firebase_admob package. We will learn how to integrate banners ads and interstitial ads.

Flutter Firebase AdMob Ads
Flutter Firebase AdMob Ads

📢 This package has been discontinued in April 2021 in favor of Google Mobile Ads SDK for Flutter. Please refer our new guide.

Our New Guide : Monetizing Flutter Apps 💡

Flutter Package : Google Mobile Ads SDK for Flutter

❌Flutter Package : firebase_admob
It is a plugin for flutter that supports loading and displaying banner, interstitial(full-screen), and rewarded video ads using Firebase AdMob API.

firebase_admob
firebase_admob
firebase_admob

Learn More : firebase_admob

step 1 : Add package name - firebase_admob in pubspec.yaml

firebase_admob: ^0.9.0+9

To learn how to use packages in flutter refer our Using Flutter Packages Guide

Adding Flutter Package
Adding Flutter Package
Adding Flutter Package

step 2 : Add meta data to Android-Manifest.xml

  • Replace ca-app-pub-################~##########with your real AdMob app ID or a test app ID.
<manifest>
<application>
<!-- TODO: Replace with your real AdMob app ID -->
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-################~##########"/>
</application>
</manifest>
Adding meta-data to AndroidManifest.xml
Adding meta-data to AndroidManifest.xml
Adding meta-data to AndroidManifest.xml

step 3 : Coding : Sample Flutter App Code

Note : Use Stateful Widgets

This is a simple app demo to learn how to integrate admob ads in your flutter app.

How to Implement Banner Ads ?

  • Define Banner Ad Property
  • Set size (Banner Size) — largeBanner, banner etc
  • Set adUnitId (here we are using TestAdUnitId)
  • Default Banner location — bottom of the screen
  • You can even set banner location to top using anchorType property as shown below
  • Provide anchorOffset value to avoid overlap with common UI elements on the screen.
  • Using listener, once the ad is loaded , show your banner ad using ..show() method
Define Banner Ad Property
Define Banner Ad Property
  • Ads must be loaded before they are shown. Load your ads in initState Method
  • Also, intialize FirebaseAdMob instance — appId. Here we are using testAppId
Load Banner Ad
Load Banner Ad

Banner Ad Demo App User Interface

Select BannerAd button to open a BannerAd Page

Demo App HomeScreen — BannerAd
Demo App HomeScreen — BannerAd

Banner Ad Demo Ad 1 — buildBannerAd()

  • Default size Banner Test Ad displayed at the bottom of the screen
Banner Ad
Banner Ad

Banner Ad Demo Ad 2 — buildLargeBannerAd()

  • Large Banner Ad at the top of the screen
  • Offset allows us to place ad below the AppBar so that it does not overlap with other UI elements on the screen.
Large Banner Ad
Large Banner Ad

How to Implement Interstitial Ads ?

  • Define Interstitial Ad Property
  • Set adUnitId (here we are using testAdUnitId)
  • MobileAdEvent.closed — user closes a ad
this load() method keeps another ad ready to be displayed when the right time comes - when show() method is invoked
  • showInterstitialAd() — shows interstitial ads every time when a user navigates from one screen to another.
  • showRandomInterstitialAd() — showing ads every time can be annoying to users, so we can use this method to show ads randomly.
Define Interstitial Ad Property
Define Interstitial Ad Property
  • Ads must be loaded before they are shown. Load your ads in initState Method
Load Interstitial Ad
Load Interstitial Ad
  • To Display your ad — call showInterstitialAd() or showRandomInterstitialAd() on button press
Show Interstitial Ad
Show Interstitial Ad

Note: Enable WiFi or mobile network on your test device or emulator to see test ads.

Interstitial Ad Demo App User Interface

  • Select InterstitialAd button to open Interstitial Ad Page
Demo App HomeScreen — Interstitial Ad
Demo App HomeScreen — Interstitial Ad
Demo App Home Screen — Interstitial Ad
Flutter Interstitial Ad Demo
Flutter Interstitial Ad Demo

How can I apply this guide to my real Android App ?

This guide explains how to enable test ads in your app. These ad units are not associated with your AdMob account and are sample ad units that are used for building and testing your apps.

Note : If you want to publish your app to Play Store or App Store then you will have to add your AdMob app ID in your AndroidManifest.xml file. Once you find your AdMob app ID in the AdMob UI add it to your AndroidManifest.xml file as explained in step 2.

<manifest>
<application>
<!-- TODO: Replace with your real AdMob app ID -->
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-################~##########"/>
</application>
</manifest>

Also replace testAdUnitId with an ad unit ids from AdMob to display real ads to your app users.

BannerAd buildBannerAd() {
return BannerAd(
// Replace the testAdUnitId with an ad unit id from the AdMob dash. adUnitId: BannerAd.testAdUnitId,
size: AdSize.banner,
...
}

Read more at : Developer Guide - Sample Ad units

Useful Resources

Learn more about flutter at AkshatApp.com

Developer Guide - Update your AndroidManifest.xml

The No-Nonsense Guide to App Monetization

Originally published at https://blog.akshatapp.com on December 8, 2019.

Helping designers and developers build high quality websites and cross platform mobile apps with our step-by-step developer guides 📚 at akshatapp.com