Admob — Ad failed to show: The provided view controller is not being presented.

[nprk]

Description:
The issue occurs every time when attempting to show rewarded ads or interstitial ads from AdMob (demo-rewarded-admob or a real adUnitId); admob ad loading is successful. Other ad networks load and show correctly.

Device:
iOS

Result:

onAdLoaded
onAdFailedToShow - Ad failed to show: The provided view controller is not being presented.

Related issues:
googleads/googleads-mobile-flutter#700
googleads/googleads-mobile-flutter#845

Pubspec:
yandex_mobileads: ^7.1.0

Podfile:

source 'https://cdn.cocoapods.org'

platform :ios, '13.0'

install! 'cocoapods', warn_for_unused_master_specs_repo: false

use_frameworks!

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,
}

def yandexAds
  pod 'YandexMobileAdsMediation', '7.1.1'
end

def flutter_root
  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
  unless File.exist?(generated_xcode_build_settings_path)
    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
  end

  File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
  end
  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
  use_frameworks!
  use_modular_headers!
  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))

  yandexAds
end

# Fix:
# [!] The 'Pods-Runner' target has transitive dependencies
# that include statically linked binaries: (.. /ios/Pods/YandexMobileAds/static/YandexMobileAds.xcframework)
# https://github.com/yandexmobile/yandex-ads-flutter-plugin/issues/30
static_frameworks = ['YandexMobileAds', 'yandex_mobileads']
pre_install do |installer|
  installer.pod_targets.each do |pod|
    if static_frameworks.include?(pod.name)
      def pod.static_framework?;
        true
      end
      def pod.build_type;
        Pod::BuildType.static_library
      end
    end
  end
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

Example:

import 'package:flutter/material.dart';
import 'package:yandex_mobileads/mobile_ads.dart';

class AdScreen extends StatefulWidget {
  const AdScreen({super.key});

  @override
  State<AdScreen> createState() => _AdScreenState();
}

class _AdScreenState extends State<AdScreen> {
  late final Future<RewardedAdLoader> _adLoader;

  final adId = "demo-rewarded-admob";

  RewardedAd? _ad;

  @override
  void initState() {
    super.initState();
    MobileAds.initialize();
    _adLoader = _createRewardedAdLoader();
    _loadRewardedAd();
  }

  Future<RewardedAdLoader> _createRewardedAdLoader() {
    return RewardedAdLoader.create(
      onAdLoaded: (RewardedAd rewardedAd) {
        print("onAdLoaded");
        // The ad was loaded successfully. Now you can show loaded ad
        _ad = rewardedAd;
      },
      onAdFailedToLoad: (error) {
        print("onAdFailedToLoad");
        // Ad failed to load with AdRequestError.
        // Attempting to load a new ad from the onAdFailedToLoad() method is strongly discouraged.
      },
    );
  }

  Future<void> _loadRewardedAd() async {
    final adLoader = await _adLoader;
    await adLoader.loadAd(adRequestConfiguration: AdRequestConfiguration(adUnitId: adId));
  }

  _showAd() async {
    _ad?.setAdEventListener(
        eventListener: RewardedAdEventListener(
            onAdShown: () {
              print("onAdShown");
              // Called when ad is shown.
            },
            onAdFailedToShow: (error) {
              print("onAdFailedToShow - $error");
              // Called when an ad failed to show.
              // Destroy the ad so you don't show the ad a second time.
              _ad?.destroy();
              _ad = null;

              // Now you can preload the next ad.
              _loadRewardedAd();
            },
            onAdClicked: () {
              print("onAdClicked");
              // Called when a click is recorded for an ad.
            },
            onAdDismissed: () {
              print("onAdDismissed");
              // Called when ad is dismissed.
              // Destroy the ad so you don't show the ad a second time.
              _ad?.destroy();
              _ad = null;

              // Now you can preload the next ad.
              _loadRewardedAd();
            },
            onAdImpression: (impressionData) {
              print("onAdImpression");
              // Called when an impression is recorded for an ad.
            },
            onRewarded: (Reward reward) {
              print("onRewarded");
              // Called when the user can be rewarded.
            }
        ));

    await _ad?.show();
    final reward = await _ad?.waitForDismiss();
    if (reward != null) {
      print('got ${reward.amount} of ${reward.type}');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Ad'),
      ),
      body: Container(
        margin: const EdgeInsets.all(16),
        child: Column(
          children: [
            Row(
              children: [
                TextButton(
                    child: Text("load"),
                    onPressed: () {
                      _ad?.destroy();
                      _ad = null;
                      _loadRewardedAd();
                    }
                ),
                TextButton(
                    child: Text("show"),
                    onPressed: () {
                      _showAd();
                    }
                ),
              ],
            ),
          ],
        ),
      )
    );
  }
}

[mobile-ads-github]

Спасибо за Ваше обращение, для разбора создана задача с номером PCODESUP-3427. Мы ознакомимся и вернемся с ответом в течение 2 дней, возможно запросим дополнительную информацию.

Thank you for your message, a task with the number PCODESUP-3427 has been created for analysis. We will get acquainted and return with the answer within 2 days, we may request additional information.