google-mobile-ads-rewarded

Load a RewardedAd with an AdRequest containing your ad unit ID, set an adEventCallback, add a button that triggers the ad, and call show() with an OnUserEarnedRewardListener. Wrap all UI operations in callbacks with runOnUiThread, since GMA SDK callbacks run on a background thread.

Load the ad with the static RewardedAd.Load() method, then call Show() with an Action<Reward> callback after checking CanShowAd(). Hook the show method to a UI button, and use MobileAdsEventExecutor.ExecuteInUpdate() for any Unity object interactions inside ad callbacks.

Yes, the iOS SDK supports rewarded ads with idiomatic Swift naming via NS_SWIFT_NAME macros. Use async/await to load the ad, set the fullScreenContentDelegate, and call present(from:) with a UserDidEarnRewardHandler; the rootViewController parameter can be nil.

GMA Next Gen SDK callbacks are invoked on a background thread, so any UI operation like Toasts or view updates crashes the app. Wrap all UI-related code in runOnUiThread {} or Dispatchers.Main.launch {} inside the callbacks.

Do not use it for rewarded interstitial ads, which are a different ad format with their own APIs. It also does not apply if the ad should show automatically, since rewarded ads must always require explicit user opt-in.