Audienzz SDK Flutter

Overview

A mobile advertising SDK that combines header bidding capabilities from Prebid Mobile with Google's advertising ecosystem through a unified interface. The implementation includes lazy loading functionality to optimize application performance by deferring ad initialization until needed.

Underlying Technologies

Prebid Mobile SDK

Prebid Mobile is an open-source framework that enables header bidding within mobile applications. It conducts real-time auctions where multiple demand sources compete for ad inventory placement.

Functionality:

Real-time auction management between demand partners
Communication with Prebid Server for bid processing
Support for banner, native, and video ad formats
Ad rendering from winning auction results

Google Ads SDK (Google Mobile Ads SDK)

The Google Mobile Ads SDK provides access to Google's advertising networks including AdMob and Google Ad Manager. It handles ad serving and mediation across multiple ad networks.

Functionality:

Banner, interstitial, native, and rewarded video ad formats
Network mediation through Google's platform
Performance analytics and reporting
Privacy compliance features

Minimum Supported Versions

The Audienzz Flutter SDK requires a minimum iOS version of 13.0 or higher and a minimum android version of API 24 (Android 7.0, Nougat) or higher.

Installation

In your terminal run command:

flutter pub add audienzz_sdk_flutter

OR add directly to pubspec.yaml

    audienzz_sdk_flutter: latest

and run command:

flutter pub get

Setup Android

Add your AdMob app ID, to your app's AndroidManifest.xml file. To do so, add a

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

Setup IOS

Update your app's Info.plist file with your AdMob app ID:

<key>GADApplicationIdentifier</key>
<string>ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy</string>

Initialize SDK

First of all, SDK needs to be initialized. It's done asynchronously, so after callback is triggered with InitializationStatus.success, SDK is ready to be used.

 final status = await AudienzzSdkFlutter.instance.initialize(companyId: 'CompanyID');

 if (status == InitializationStatus.success) {
   // SDK is ready to be used
 }

CompanyId is provided by Audienzz, usually - it is id of the company in ad console.

The Audienzz SDK Flutter allows you to display three types Ads - BannerAd, InterstitialAd and RewardedAd.

Examples

You can find examples of practical implementation here:

Examples

Quick Start

Minimal initialization and first ad load.

import 'package:audienzz_sdk_flutter/audienzz_sdk_flutter.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  final status = await AudienzzSdkFlutter.instance
      .initialize(companyId: 'YOUR_COMPANY_ID');
  runApp(MyApp(initialized: status == InitializationStatus.success));
}

class MyApp extends StatefulWidget {
  const MyApp({super.key, required this.initialized});
  final bool initialized;

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  BannerAd? _banner;

  @override
  void initState() {
    super.initState();
    _banner = BannerAd(
      adUnitId: 'YOUR_AD_UNIT_ID',
      auConfigId: 'YOUR_AU_CONFIG_ID',
      sizes: {const AdSize(width: 320, height: 50)},
      onAdLoaded: (_) => debugPrint('Banner loaded'),
      onAdFailedToLoad: (_, error) => debugPrint('Banner load failed: ${error?.message}'),
    )..load();
  }

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Audienzz Quick Start')),
        body: widget.initialized && _banner != null
            ? Center(child: AdWidget(ad: _banner!))
            : const Center(child: Text('SDK not initialized')),
      ),
    );
  }
}

Interstitial minimal usage

final interstitial = InterstitialAd(
  adUnitId: 'YOUR_AD_UNIT_ID',
  auConfigId: 'YOUR_AU_CONFIG_ID',
  adFormat: AdFormat.bannerAndVideo,
  onAdLoaded: (_) => debugPrint('Interstitial loaded'),
  onAdFailedToLoad: (_, error) => debugPrint('Interstitial fail: ${error?.message}'),
  onAdClosed: (ad) async {
    await ad.dispose();
  },
);
await interstitial.load();
await interstitial.show();

Rewarded minimal usage

final rewarded = RewardedAd(
  adUnitId: 'YOUR_AD_UNIT_ID',
  auConfigId: 'YOUR_AU_CONFIG_ID',
  onAdLoaded: (_) => debugPrint('Rewarded loaded'),
  onAdFailedToLoad: (_, error) => debugPrint('Rewarded fail: ${error?.message}'),
  onUserEarnedRewardCallback: (_, reward) {
    debugPrint('User rewarded: ${reward.amount} ${reward.type}');
  },
  onAdClosed: (ad) async {
    await ad.dispose();
  },
);
await rewarded.load();
await rewarded.show();

Targeting basics

Set per-user data (keywords, location, privacy) and global targeting.

User keywords

await AudienzzTargeting.addUserKeywords(['sports', 'travel']);
await AudienzzTargeting.addUserKeyword('gaming');
final all = await AudienzzTargeting.getKeywordSet();
await AudienzzTargeting.removeUserKeyword('travel');
await AudienzzTargeting.clearUserKeywords();

User location

await AudienzzTargeting.setUserLatLng(47.3769, 8.5417); // Zurich
final loc = await AudienzzTargeting.getUserLatLng();

await AudienzzTargeting.setSubjectToGDPR(isSubject: true);
await AudienzzTargeting.setGdprConsentString('COabcd...');
await AudienzzTargeting.setPurposeConsents('111000');
await AudienzzTargeting.setSubjectToCOPPA(isSubject: false);

External User IDs (EIDs)

await AudienzzTargeting.setExternalUserIds([
  ExternalUserId(
    source: 'adserver.org',
    uniqueIds: [UniqueId(id: 'user-123', atype: 1)],
  ),
]);
final eids = await AudienzzTargeting.getExternalUserIds();

Global targeting and ext data

// Global key -> single value
await AudienzzTargeting.addSingleGlobalTargeting('section', 'home');

// Global key -> multiple values
await AudienzzTargeting.addGlobalTargeting('interests', {'tech', 'finance'});

// Remove / Clear
await AudienzzTargeting.removeGlobalTargeting('section');
await AudienzzTargeting.clearGlobalTargeting();

// Ext data
await AudienzzTargeting.addExtData('category', 'news');
await AudienzzTargeting.updateExtData('tags', ['flutter', 'ads']);
await AudienzzTargeting.removeExtData('category');
await AudienzzTargeting.clearExtData();

Global OpenRTB config

await AudienzzTargeting.setGlobalOrtbConfig({
  'regs': {
    'coppa': 0,
  },
  'user': {
    'yob': 1990,
  },
});
final ortb = await AudienzzTargeting.getGlobalOrtbConfig();

Passing placement identifiers on ads

final banner = BannerAd(
  adUnitId: 'YOUR_AD_UNIT_ID',
  auConfigId: 'YOUR_AU_CONFIG_ID',
  sizes: {const AdSize(width: 320, height: 50)},
  pbAdSlot: '/1234/home/top_banner',
  gpId: 'gpid-abc-123',
  impOrtbConfig: '{"ext":{"example":"value"}}', // custom ORTB at imp-level
  onAdLoaded: (_) {},
  onAdFailedToLoad: (_, __) {},
)..load();

API Reference

SDK Initialization

Method	Parameters	Description
`AudienzzSdkFlutter.instance.initialize`	`{required String companyId}`	Initializes the SDK. Returns `InitializationStatus`. Must be called before using any ad features.

Ad Base Classes

Property/Method	Type	Description
`adUnitId`	`String`	Unique identifier for your ad placement.
`auConfigId`	`String`	ID of the stored impression on the server.
`dispose()`	`Future<void>`	Frees resources used for the ad.

AdWithView (extends Ad)

Property/Method	Type	Description
`load()`	`Future<void>`	Loads the ad. Used for ads that are shown as widgets.

AdWithoutView (extends Ad)

Property/Method	Type	Description
(inherits all from Ad)		Used for ads that do not require a widget view.

BannerAd (extends AdWithView)

Property/Method	Type	Description
`sizes`	`Set<AdSize>`	Required. Ad sizes for the bid request. At least one required.
`isAdaptiveSize`	`bool`	If true, ad size is adaptive. Default: false.
`refreshTimeInterval`	`int?`	Refresh time in milliseconds. Optional.
`adFormat`	`AdFormat`	Desired ad format (banner, video, or both). Default: `AdFormat.banner`.
`apiParameters`	`Set<ApiParameter>`	API frameworks for bid response. Default: `{mraid3, omid1}`.
`protocols`	`Set<Protocol>`	Supported video protocols. Optional.
`placement`	`Placement`	Placement type. Default: `Placement.inBanner`.
`playbackMethods`	`Set<PlaybackMethod>`	Video playback methods. Default: `{autoPlaySoundOn}`.
`videoBitrate`	`VideoBitrate`	Video bitrate range. Default: `min: 300, max: 1500`.
`videoDuration`	`VideoDuration`	Video duration range. Default: `min: 1, max: 30`.
`pbAdSlot`	`String?`	PB Ad Slot identifier. Optional.
`gpId`	`String?`	Global Placement ID. Optional.
`impOrtbConfig`	`String?`	Custom ORTB object for impression. Optional.
`onAdLoaded`	`void Function(BannerAd ad)`	Callback when ad is loaded.
`onAdFailedToLoad`	`void Function(BannerAd ad, AdError? error)`	Callback when ad fails to load.
`onAdOpened`	`void Function(BannerAd ad)?`	Callback when ad overlay opens.
`onAdClosed`	`void Function(BannerAd ad)?`	Callback when user returns to app.
`onAdClicked`	`void Function(BannerAd ad)?`	Callback when ad is clicked.
`onAdImpression`	`void Function(BannerAd ad)?`	Callback when ad is visible for 1s.
`getPlatformAdSize()`	`Future<AdSize?>`	Gets the ad size assigned on the platform.
`load()`	`Future<void>`	Loads the ad.

InterstitialAd (extends AdWithoutView)

Property/Method	Type	Description
`adFormat`	`AdFormat`	Required. Desired ad format.
`minSizePercentage`	`MinSizePercentage`	Minimum ad size in percent. Default: `width: 80, height: 60`.
`sizes`	`Set<AdSize>`	Ad sizes for the bid request. Optional.
`apiParameters`	`Set<ApiParameter>`	API frameworks for bid response. Default: `{mraid3, omid1}`.
`protocols`	`Set<Protocol>`	Supported video protocols. Optional.
`placement`	`Placement`	Placement type. Default: `Placement.inBanner`.
`playbackMethods`	`Set<PlaybackMethod>`	Video playback methods. Default: `{enterSoundOff}`.
`videoBitrate`	`VideoBitrate`	Video bitrate range. Default: `min: 300, max: 1500`.
`videoDuration`	`VideoDuration`	Video duration range. Default: `min: 1, max: 30`.
`pbAdSlot`	`String?`	PB Ad Slot identifier. Optional.
`gpId`	`String?`	Global Placement ID. Optional.
`impOrtbConfig`	`String?`	Custom ORTB object for impression. Optional.
`onAdLoaded`	`void Function(InterstitialAd ad)`	Callback when ad is loaded.
`onAdFailedToLoad`	`void Function(InterstitialAd ad, AdError? error)`	Callback when ad fails to load.
`onAdOpened`	`void Function(InterstitialAd ad)?`	Callback when ad overlay opens.
`onAdClosed`	`void Function(InterstitialAd ad)?`	Callback when user returns to app.
`onAdClicked`	`void Function(InterstitialAd ad)?`	Callback when ad is clicked.
`onAdImpression`	`void Function(InterstitialAd ad)?`	Callback when ad is visible for 1s.
`load()`	`Future<void>`	Loads the ad.
`show()`	`Future<void>`	Shows the ad (must be loaded first).

RewardedAd (extends AdWithoutView)

Property/Method	Type	Description
`apiParameters`	`Set<ApiParameter>`	API frameworks for bid response. Default: `{mraid3, omid1}`.
`protocols`	`Set<Protocol>`	Supported video protocols. Optional.
`placement`	`Placement`	Placement type. Default: `Placement.inBanner`.
`playbackMethods`	`Set<PlaybackMethod>`	Video playback methods. Default: `{enterSoundOff}`.
`videoBitrate`	`VideoBitrate`	Video bitrate range. Default: `min: 300, max: 1500`.
`videoDuration`	`VideoDuration`	Video duration range. Default: `min: 1, max: 30`.
`pbAdSlot`	`String?`	PB Ad Slot identifier. Optional.
`gpId`	`String?`	Global Placement ID. Optional.
`impOrtbConfig`	`String?`	Custom ORTB object for impression. Optional.
`onAdLoaded`	`void Function(RewardedAd ad)`	Callback when ad is loaded.
`onAdFailedToLoad`	`void Function(RewardedAd ad, AdError? error)`	Callback when ad fails to load.
`onAdOpened`	`void Function(RewardedAd ad)?`	Callback when ad overlay opens.
`onAdClosed`	`void Function(RewardedAd ad)?`	Callback when user returns to app.
`onAdClicked`	`void Function(RewardedAd ad)?`	Callback when ad is clicked.
`onAdImpression`	`void Function(RewardedAd ad)?`	Callback when ad is visible for 1s.
`onUserEarnedRewardCallback`	`void Function(RewardedAd ad, RewardItem reward)`	Callback when user earns a reward.
`load()`	`Future<void>`	Loads the ad.
`show()`	`Future<void>`	Shows the ad (must be loaded first).

AdWidget

Property/Method	Type	Description
`ad`	`AdWithView`	The ad instance to display. Must be loaded before use.

Data Classes & Enums

AdFormat

Value	Description
`banner`	Banner ad format.
`video`	Video ad format.
`bannerAndVideo`	Multi-format (banner and video).

AdSize

Property	Type	Description
`height`	`int`	Desired ad height.
`width`	`int`	Desired ad width.

ApiParameter

Value	Description
`vpaid1`	VPAID 1.0 API framework.
`vpaid2`	VPAID 2.0 API framework.
`mraid1`	MRAID 1.0 API framework.
`ormma`	ORMMA API framework.
`mraid2`	MRAID 2.0 API framework.
`mraid3`	MRAID 3.0 API framework.
`omid1`	OMID 1.0 API framework.

Placement

Value	Description
`inStream`	In-stream video placement.
`inBanner`	In-banner video placement.
`inArticle`	In-article video placement.
`inFeed`	In-feed video placement.
`interstitial`	Interstitial placement.
`slider`	Slider placement.
`floating`	Floating placement.

PlaybackMethod

Value	Description
`autoPlaySoundOn`	Auto-play with sound on.
`autoPlaySoundOff`	Auto-play with sound off.
`clickToPlay`	Click to play.
`mouseOver`	Play on mouse over.
`enterSoundOn`	Enter with sound on.
`enterSoundOff`	Enter with sound off.

Protocol

Value	Description
`vast1_0`	VAST 1.0 protocol.
`vast2_0`	VAST 2.0 protocol.
`vast3_0`	VAST 3.0 protocol.
`vast1_0wrapper`	VAST 1.0 wrapper protocol.
`vast2_0wrapper`	VAST 2.0 wrapper protocol.
`vast3_0wrapper`	VAST 3.0 wrapper protocol.
`vast4_0`	VAST 4.0 protocol.
`vast4_0wrapper`	VAST 4.0 wrapper protocol.
`daast1_0`	DAAST 1.0 protocol.
`daast1_0wrapper`	DAAST 1.0 wrapper protocol.

VideoBitrate

Property	Type	Description
`min`	`int`	Minimum video bitrate in kbps.
`max`	`int`	Maximum video bitrate in kbps.

VideoDuration

Property	Type	Description
`min`	`int`	Minimum video duration in seconds.
`max`	`int`	Maximum video duration in seconds.

MinSizePercentage

Property	Type	Description
`width`	`int`	Minimum width in percent.
`height`	`int`	Minimum height in percent.

AdError

Property	Type	Description
`code`	`int`	Error code.
`message`	`String`	Descriptive error message.

RewardItem

Property	Type	Description
`amount`	`num`	Amount of the reward.
`type`	`String`	Type of the reward.

InitializationStatus

Value	Description
`success`	SDK initialized successfully.
`fail`	SDK initialization failed.

Exceptions

Exception	Description
`SdkInitializationFailedException`	Thrown if SDK initialization fails.
`AdMessageCodecReadingException`	Thrown if there is an error reading ad message codec.
`AdSizeRequiredException`	Thrown if ad size is required but missing.
`RewardItemMissingException`	Thrown if a reward item is missing in a rewarded ad.

License

Copyright 2025 Audienzz AG.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Audienzz SDK Flutter

Overview

Underlying Technologies

Prebid Mobile SDK

Google Ads SDK (Google Mobile Ads SDK)

Minimum Supported Versions

Installation

Setup Android

Setup IOS

Initialize SDK

Examples

Quick Start

Interstitial minimal usage

Rewarded minimal usage

Targeting basics

User keywords

User location

GDPR / COPPA

External User IDs (EIDs)

Global targeting and ext data

Global OpenRTB config

Passing placement identifiers on ads

API Reference

SDK Initialization

Ad Base Classes

Ad

AdWithView (extends Ad)

AdWithoutView (extends Ad)

BannerAd (extends AdWithView)

InterstitialAd (extends AdWithoutView)

RewardedAd (extends AdWithoutView)

AdWidget

Data Classes & Enums

AdFormat

AdSize

ApiParameter

Placement

PlaybackMethod

Protocol

VideoBitrate

VideoDuration

MinSizePercentage

AdError

RewardItem

InitializationStatus

Exceptions

License

Libraries

audienzz_sdk_flutter package