Google Mobile Ads (AdMob) Integration in Unity

using GoogleMobileAds.Ump.Api;
using GoogleMobileAds.Api;
using UnityEngine;

public class AdMobConsentManager : MonoBehaviour {
    void Start() {
        var requestParameters = new ConsentRequestParameters();

        // 1. Update consent information
        ConsentInformation.Update(requestParameters, (FormError updateError) => {
            if (updateError != null) {
                Debug.LogError("Consent update failed: " + updateError.Message);
                return;
            }
            
            // 2. Load and show the consent form if required by the user's region
            ConsentForm.LoadAndShowConsentFormIfRequired((FormError formError) => {
                if (formError != null) {
                    Debug.LogError("Consent form error: " + formError.Message);
                }
                
                // 3. Initialize AdMob if consent state allows requesting ads
                if (ConsentInformation.CanRequestAds()) {
                    InitializeAdMob();
                }
            });
        });
    }

    private void InitializeAdMob() {
        MobileAds.Initialize((InitializationStatus initStatus) => {
            Debug.Log("AdMob Initialized.");
            // Safe to load ads now
        });
    }
}

using GoogleMobileAds.Api;
using GoogleMobileAds.Common;
using UnityEngine;
using System;

public class RewardedAdController : MonoBehaviour {
    private RewardedAd _rewardedAd;
    private string _adUnitId = "ca-app-pub-3940256099942544/5224354917"; // Standard Android Test ID

    public void LoadAd() {
        // Clean up the old ad before loading a new one
        if (_rewardedAd != null) {
            _rewardedAd.Destroy();
            _rewardedAd = null;
        }

        var adRequest = new AdRequest();
        RewardedAd.Load(_adUnitId, adRequest, (RewardedAd ad, LoadAdError error) => {
            if (error != null || ad == null) {
                Debug.LogError("Ad failed to load: " + error);
                return;
            }
            _rewardedAd = ad;
            RegisterEventHandlers(_rewardedAd);
        });
    }

    public void ShowAd() {
        if (_rewardedAd != null && _rewardedAd.CanShowAd()) {
            _rewardedAd.Show((Reward reward) => {
                // Marshal the reward logic back to the Unity main thread
                MobileAdsEventExecutor.ExecuteInUpdate(() => {
                    Debug.Log("Reward granted! Updating UI...");
                });
            });
        }
    }

    private void RegisterEventHandlers(RewardedAd ad) {
        // Reload a new ad when the user closes the current one
        ad.OnAdFullScreenContentClosed += () => {
            Debug.Log("Ad closed. Preloading the next one.");
            LoadAd();
        };
        
        ad.OnAdFullScreenContentFailed += (AdError error) => {
            Debug.LogError("Ad failed to show: " + error);
            LoadAd();
        };
    }
}

using System.Collections.Generic;
using GoogleMobileAds.Api;

public class TestDeviceConfigurator {
    public void ConfigureAndInitialize() {
        // WARNING: Remove test device IDs before building your production release!
        List<string> testDeviceIds = new List<string>() { "YOUR_DEVICE_HASH_ID" };
        RequestConfiguration requestConfiguration = new RequestConfiguration {
            TestDeviceIds = testDeviceIds
        };
        MobileAds.SetRequestConfiguration(requestConfiguration);
        
        // Initialize AFTER setting request configuration
        MobileAds.Initialize((InitializationStatus initStatus) => {
            // SDK is ready
        });
    }
}