# 在 Android 中实现奖励广告 > 在 Android 应用程序中实现奖励广告。加载广告内容，通过 Java 代码展示广告，并使用监听器来管理广告事件和奖励逻辑。 对观看广告的用户进行奖励可以增加用户参与度，从而带来更高收入。例如，游戏可以用游戏币、消耗品、额外生命数量或经验倍增法宝来奖励用户。如需了解如何有效设计奖励广告的更多信息，请参阅[变现策略](/grow/ads/monetization-strategy.md)指南。 要奖励用户看完视频广告，请使用 [`IUnityAdsShowListener.onUnityAdsShowComplete`](/grow/ads/android-sdk/android-api.md#onunityadsshowcomplete) 监听器回调方法的 [`UnityAdsShowCompletionState`](/grow/ads/android-sdk/android-api.md#unityadsshowcompletionstate) 结果来检查用户是否看完广告并应该获得奖励。 > **Note:** > > Unity Ads 需要访问当前正在运行的 Activity，所以下面的示例使用 `getApplicationContext()`。 > 由于这可能不适合所有实现，因此可能需要进行一些定制（具体取决于集成情况）。 ## 奖励视频广告示例##rewarded-video-ad-example 1. **Java** ```java import android.app.Activity; import android.os.Bundle; import android.util.Log; import androidx.appcompat.app.AppCompatActivity; import com.unity3d.ads.IUnityAdsLoadListener; import com.unity3d.ads.IUnityAdsShowListener; import com.unity3d.ads.UnityAdsShowOptions; import com.unity3d.ads.example.R; import com.unity3d.ads.IUnityAdsInitializationListener; import com.unity3d.ads.UnityAds; public class ShowRewardedAd extends AppCompatActivity implements IUnityAdsInitializationListener { private String unityGameID = "1234567"; private Boolean testMode = true; private String adUnitId = "rewardedVideo"; private IUnityAdsLoadListener loadListener = new IUnityAdsLoadListener() { @Override public void onUnityAdsAdLoaded(String placementId) { UnityAds.show((Activity)getApplicationContext(), adUnitId, new UnityAdsShowOptions(), showListener); } @Override public void onUnityAdsFailedToLoad(String placementId, UnityAds.UnityAdsLoadError error, String message) { Log.e("UnityAdsExample", "Unity Ads failed to load ad for " + placementId + " with error: [" + error + "] " + message); } }; private IUnityAdsShowListener showListener = new IUnityAdsShowListener() { @Override public void onUnityAdsShowFailure(String placementId, UnityAds.UnityAdsShowError error, String message) { Log.e("UnityAdsExample", "Unity Ads failed to show ad for " + placementId + " with error: [" + error + "] " + message); } @Override public void onUnityAdsShowStart(String placementId) { Log.v("UnityAdsExample", "onUnityAdsShowStart: " + placementId); } @Override public void onUnityAdsShowClick(String placementId) { Log.v("UnityAdsExample", "onUnityAdsShowClick: " + placementId); } @Override public void onUnityAdsShowComplete(String placementId, UnityAds.UnityAdsShowCompletionState state) { Log.v("UnityAdsExample", "onUnityAdsShowComplete: " + placementId); if (state.equals(UnityAds.UnityAdsShowCompletionState.COMPLETED)) { // Reward the user for watching the ad to completion } else { // Do not reward the user for skipping the ad } } }; @Override protected void onCreate (Bundle savedInstanceState) { super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); // Initialize the SDK: UnityAds.initialize(getApplicationContext(), unityGameID, testMode, this); } @Override public void onInitializationComplete() { DisplayRewardedAd(); } @Override public void onInitializationFailed(UnityAds.UnityAdsInitializationError error, String message) { Log.e("UnityAdsExample", "Unity Ads initialization failed with error: [" + error + "] " + message); } // Implement a function to load a rewarded ad.The ad will start to show after the ad has been loaded. public void DisplayRewardedAd () { UnityAds.load(adUnitId, loadListener); } } ``` ## 奖励视频广告按钮##rewarded-video-ad-buttons 使用按钮让玩家选择观看广告是奖励视频广告的常见实现方式。可使用以下示例代码来创建奖励广告按钮。只要事先加载了广告，就会在按下广告按钮时展示广告。有关配置按钮的信息，请参阅有关[按钮](https://developer.android.com/guide/topics/ui/controls/button)的 Android 开发者文档。 实现按钮后，请添加一个包含以下代码的脚本，其中 `showAdButton` 是 View 中配置的按钮： > **Note:** > > Unity Ads 需要访问当前正在运行的 Activity，所以下面的示例使用 `getApplicationContext()`。 > 由于这可能不适合所有实现，因此可能需要进行一些定制（具体取决于集成情况）。 1. **Java** ```java import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import androidx.appcompat.app.AppCompatActivity; import com.unity3d.ads.IUnityAdsLoadListener; import com.unity3d.ads.IUnityAdsShowListener; import com.unity3d.ads.UnityAdsShowOptions; import com.unity3d.ads.example.R; import com.unity3d.ads.IUnityAdsInitializationListener; import com.unity3d.ads.UnityAds; public class RewardedAdButton extends AppCompatActivity implements IUnityAdsInitializationListener { private String unityGameID = "1234567"; private Boolean testMode = true; private String adUnitId = "rewardedVideo"; private Button rewardedButton; private IUnityAdsLoadListener loadListener = new IUnityAdsLoadListener() { @Override public void onUnityAdsAdLoaded(String placementId) { UnityAds.show((Activity)getApplicationContext(), adUnitId, new UnityAdsShowOptions(), showListener); } @Override public void onUnityAdsFailedToLoad(String placementId, UnityAds.UnityAdsLoadError error, String message) { Log.e("UnityAdsExample", "Unity Ads failed to load ad for " + placementId + " with error: [" + error + "] " + message); } }; private IUnityAdsShowListener showListener = new IUnityAdsShowListener() { @Override public void onUnityAdsShowFailure(String placementId, UnityAds.UnityAdsShowError error, String message) { Log.e("UnityAdsExample", "Unity Ads failed to show ad for " + placementId + " with error: [" + error + "] " + message); // Re-enable the button if the user should be allowed to watch another rewarded ad rewardedButton.setEnabled(true); } @Override public void onUnityAdsShowStart(String placementId) { Log.v("UnityAdsExample", "onUnityAdsShowStart: " + placementId); } @Override public void onUnityAdsShowClick(String placementId) { Log.v("UnityAdsExample", "onUnityAdsShowClick: " + placementId); } @Override public void onUnityAdsShowComplete(String placementId, UnityAds.UnityAdsShowCompletionState state) { Log.v("UnityAdsExample", "onUnityAdsShowComplete: " + placementId); if (state.equals(UnityAds.UnityAdsShowCompletionState.COMPLETED)) { // Reward the user for watching the ad to completion } else { // Do not reward the user for skipping the ad } // Re-enable the button if the user should be allowed to watch another rewarded ad rewardedButton.setEnabled(true); } }; @Override protected void onCreate (Bundle savedInstanceState) { super.onCreate (savedInstanceState); setContentView (R.layout.activity_main); // Initialize the SDK: UnityAds.initialize(getApplicationContext(), unityGameID, testMode, this); // Find the button in the view hierarchy and set its click function to load ads: rewardedButton = findViewById (R.id.showAdButton); rewardedButton.setOnClickListener (new View.OnClickListener (){ @Override public void onClick (View v) { DisplayRewardedAd (); rewardedButton.setEnabled(false); } }); } @Override public void onInitializationComplete() { rewardedButton.setEnabled(true); } @Override public void onInitializationFailed(UnityAds.UnityAdsInitializationError error, String message) { Log.e("UnityAdsExample", "Unity Ads initialization failed with error: [" + error + "] " + message); } // Implement a function to load an rewarded ad.The ad will start to show after the ad has been loaded. public void DisplayRewardedAd () { UnityAds.load(adUnitId, loadListener); } } ``` **后续步骤**：请参阅[在 Android 中实现横幅广告](/grow/ads/android-sdk/banner-ads.md)。