Added Snippets to the Rewarded Ad developer guide.

PiperOrigin-RevId: 788500902

Author: Nicholas Ventimiglia

samples/HelloWorld/Assets/Snippets/RewardedAdSnippets.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using GoogleMobileAds.Api;
+
+namespace GoogleMobileAds.Snippets
+{
+    internal class RewardedAdSnippets
+    {
+#if UNITY_ANDROID
+        private const string AD_UNIT_ID = "ca-app-pub-3940256099942544/5224354917";
+#elif UNITY_IPHONE
+        private const string AD_UNIT_ID = "ca-app-pub-3940256099942544/1712485313";
+#else
+        private const string AD_UNIT_ID = "unused";
+#endif
+
+        void LoadAd()
+        {
+            // [START load_ad]
+            // Create our request used to load the ad.
+            var adRequest = new AdRequest();
+
+            // Send the request to load the ad.
+            RewardedAd.Load(AD_UNIT_ID, adRequest, (RewardedAd ad, LoadAdError error) =>
+            {
+                if (error != null)
+                {
+                    // The ad failed to load.
+                    return;
+                }
+                // The ad loaded successfully.
+            });
+            // [END load_ad]
+        }
+
+        void ServerSideVerification(RewardedAd rewardedAd)
+        {
+            // [START ssv]
+            // Create and pass the SSV options to the rewarded ad.
+            var options = new ServerSideVerificationOptions
+            {
+                CustomData = "SAMPLE_CUSTOM_DATA_STRING"
+            };
+
+            rewardedAd.SetServerSideVerificationOptions(options);
+            // [END ssv]
+        }
+
+        void ShowAd(RewardedAd rewardedAd)
+        {
+            // [START show_ad]
+            if (rewardedAd != null && rewardedAd.CanShowAd())
+            {
+                rewardedAd.Show((Reward reward) =>
+                {
+                    // The ad was showen and the user earned a reward.
+                });
+            }
+            // [END show_ad]]
+        }
+
+        void ListenToAdEvents(RewardedAd rewardedAd)
+        {
+            // [START ad_events]
+            rewardedAd.OnAdPaid += (AdValue adValue) =>
+            {
+                // Raised when the ad is estimated to have earned money.
+            };
+            rewardedAd.OnAdImpressionRecorded += () =>
+            {
+                // Raised when an impression is recorded for an ad.
+            };
+            rewardedAd.OnAdClicked += () =>
+            {
+                // Raised when a click is recorded for an ad.
+            };
+            rewardedAd.OnAdFullScreenContentOpened += () =>
+            {
+                // Raised when the ad opened full screen content.
+            };
+            rewardedAd.OnAdFullScreenContentClosed += () =>
+            {
+                // Raised when the ad closed full screen content.
+            };
+            rewardedAd.OnAdFullScreenContentFailed += (AdError error) =>
+            {
+                // Raised when the ad failed to open full screen content.
+            };
+            // [END ad_events]]
+        }
+
+        void DestroyAd(RewardedAd rewardedAd)
+        {
+            // [START destroy_ad]
+            if (rewardedAd != null)
+            {
+                rewardedAd.Destroy();
+            }
+            // [END destroy_ad]]
+        }
+
+        void ReloadAd(RewardedAd rewardedAd)
+        {
+            // [START reload_ad]
+            rewardedAd.OnAdFullScreenContentClosed += () =>
+            {
+                // Reload the ad so that we can show another as soon as possible.
+                var adRequest = new AdRequest();
+                RewardedAd.Load(AD_UNIT_ID, adRequest, (RewardedAd ad, LoadAdError error) =>
+                {
+                    // Handle ad loading here.
+                });
+            };
+            // [END reload_ad]]
+        }
+    }
+}