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discontinuedreplaced by: google_mobile_ads
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Firebase AdMob plugin for Flutter applications.

firebase_admob #

A plugin for Flutter that supports loading and displaying banner, interstitial (full-screen), and rewarded video ads using the Firebase AdMob API.

Warning: This plugin is still under development, some AdMob features are not available yet and testing has been limited. Feedback and Pull Requests are welcome.

Initializing the plugin #

The AdMob plugin must be initialized with an AdMob App ID.

FirebaseAdMob.instance.initialize(appId: appId);

Using banners and interstitials #

Banner and interstitial ads can be configured with target information. And in the example below, the ads are given test ad unit IDs for a quick start.

MobileAdTargetingInfo targetingInfo = new MobileAdTargetingInfo(
  keywords: <String>['flutterio', 'beautiful apps'],
  contentUrl: 'https://flutter.io',
  birthday: new DateTime.now(),
  childDirected: false,
  designedForFamilies: false,
  gender: MobileAdGender.male, // or MobileAdGender.female, MobileAdGender.unknown
  testDevices: <String>[], // Android emulators are considered test devices
);

BannerAd myBanner = new BannerAd(
  // Replace the testAdUnitId with an ad unit id from the AdMob dash.
  // https://developers.google.com/admob/android/test-ads
  // https://developers.google.com/admob/ios/test-ads
  adUnitId: BannerAd.testAdUnitId,
  size: AdSize.smartBanner,
  targetingInfo: targetingInfo,
  listener: (MobileAdEvent event) {
    print("BannerAd event is $event");
  },
);

InterstitialAd myInterstitial = new InterstitialAd(
  // Replace the testAdUnitId with an ad unit id from the AdMob dash.
  // https://developers.google.com/admob/android/test-ads
  // https://developers.google.com/admob/ios/test-ads
  adUnitId: InterstitialAd.testAdUnitId,
  targetingInfo: targetingInfo,
  listener: (MobileAdEvent event) {
    print("InterstitialAd event is $event");
  },
);

Ads must be loaded before they're shown.

myBanner
  // typically this happens well before the ad is shown
  ..load()
  ..show(
    // Positions the banner ad 60 pixels from the bottom of the screen
    anchorOffset: 60.0,
    // Banner Position
    anchorType: AnchorType.bottom,
  );
myInterstitial
  ..load()
  ..show(
    anchorType: AnchorType.bottom,
    anchorOffset: 0.0,
  );

BannerAd and InterstitialAd objects can be disposed to free up plugin resources. Disposing a banner ad that's been shown removes it from the screen. Interstitial ads, however, can't be programmatically removed from view.

Banner and interstitial ads can be created with a MobileAdEvent listener. The listener can be used to detect when the ad has actually finished loading (or failed to load at all).

Using rewarded video ads #

Unlike banners and interstitials, rewarded video ads are loaded one at a time via a singleton object, RewardedVideoAd.instance. Its load method takes an AdMob ad unit ID and an instance of MobileAdTargetingInfo:

RewardedVideoAd.instance.load(myAdMobAdUnitId, targetingInfo);

To listen for events in the rewarded video ad lifecycle, apps can define a function matching the RewardedVideoAdListener typedef, and assign it to the listener instance variable in RewardedVideoAd. If set, the listener function will be invoked whenever one of the events in the RewardedVideAdEvent enum occurs. After a rewarded video ad loads, for example, the RewardedVideoAdEvent.loaded is sent. Any time after that, apps can show the ad by calling show:

RewardedVideoAd.instance.show();

When the AdMob SDK decides it's time to grant an in-app reward, it does so via the RewardedVideoAdEvent.rewarded event:

RewardedVideoAd.instance.listener =
    (RewardedVideoAdEvent event, [String rewardType, int rewardAmount]) {
  if (event == RewardedVideoAdEvent.rewarded) {
    setState(() {
      // Here, apps should update state to reflect the reward.
      _goldCoins += rewardAmount;
    });
  }
};

Because RewardedVideoAd is a singleton object, it does not offer a dispose method.

Limitations #

This is just an initial version of the plugin. There are still some limitations:

  • Banner ads have limited positioning functionality. They can be positioned at the top or the bottom of the screen and at a logical pixel offset from the edge.
  • Banner ads cannot be animated into view.
  • It's not possible to specify a banner ad's size.
  • There's no support for native ads.
  • The existing tests are fairly rudimentary.
  • There is no API doc.
  • The example should demonstrate how to show gate a route push with an interstitial ad

For Flutter plugins for other Firebase products, see FlutterFire.md.