# Implement rewarded ads in Android

> Implement rewarded ads in your Android app. Load ad content, display it through Java code, and use a listener to manage ad events and reward logic.

Rewarding users for watching ads increases user engagement, resulting in higher revenue. For example, games might reward users with in-game currency, consumables, additional lives, or experience-multipliers. For more information on how to effectively design your rewarded ads, refer to the [monetization strategy](/monetization/getting-started/monetization-strategy.md) guide.

## Rewarded video ad load example

Call `show()` on the retained `RewardedAd` instance, passing the activity, a `ShowConfiguration`, and a `RewardedShowListener`. The listener provides `onStarted`, `onClicked`, and `onFailed` callbacks for standard ad lifecycle events, as well as two reward-specific callbacks: `onRewarded`, which fires when the user earns a reward, and `onCompleted`, which fires after it when the ad closes. Because both callbacks can fire in sequence, reward logic should be handled in only one of them, typically by checking a flag like `shouldAlwaysRewardUser()` to avoid granting the reward twice.

Ads expire a set time after they load if they aren't shown. Set `onAdExpired` on the loaded ad instance to detect this. This is especially relevant for rewarded ads since they're often preloaded and held until the user opts in. Calling `show()` on an expired ad fails, so use the callback to clear your stored reference and issue a new `load()` call so a fresh ad is ready when needed.

1. **Java**

   ```java
   RewardedAd.load(loadConfig, (rewardedAd, error) -> {
       if (rewardedAd != null) {
           // Ad loaded successfully, ready to be shown
           this.rewardedAd = rewardedAd;
           rewardedAd.setOnAdExpired(expiredAd -> {
               this.rewardedAd = null;
               // reload here
           });
       } else {
           // Handle load error
       }
   });
   ```

2. **Kotlin**

   ```kotlin
   RewardedAd.load(loadConfig, { rewardedAd, error ->
       if (rewardedAd != null) {
           // Ad loaded successfully, ready to be shown
           this.rewardedAd = rewardedAd
           rewardedAd.onAdExpired = AdExpiredListener { _ ->
               this.rewardedAd = null
               // reload here
           }
       } else {
           // Handle load error
       }
   })
   ```

## Rewarded video ad show example

1. **Java**

   ```java
   rewardedAd.show(activity, showConfig, rewardedAdShowListener)
   {
        @Override
        public void onStarted(@NonNull InterstitialAd ad)   
        { /* displayed */ }

        @Override
        public void onClicked(@NonNull InterstitialAd ad)   
        { /* clicked */ }

        @Override
        public void onCompleted(@NonNull InterstitialAd ad, @NonNull ShowFinishState state) 
        { /* hidden */ }

        @Override
        public void onFailed(@NonNull InterstitialAd ad, @NonNull UnityAdsError error)      
        { /* failed */ }
     } 
   ```

2. **Kotlin**

   ```kotlin
   rewardedAd.show(activity, showConfig, rewardedAdShowListener)
   {
        @Override
        public void onStarted(@NonNull InterstitialAd ad)   
        { /* displayed */ }

        @Override
        public void onClicked(@NonNull InterstitialAd ad)   
        { /* clicked */ }

        @Override
        public void onCompleted(@NonNull InterstitialAd ad, @NonNull ShowFinishState state) 
        { /* hidden */ }

        @Override
        public void onFailed(@NonNull InterstitialAd ad, @NonNull UnityAdsError error)      
        { /* failed */ }
     } 
   ```

**Next steps**: Refer to [Implement banner ads in Android](/ads-android/4.20.0/sdk-integration/banner-ads.md).