IMA SDK 可讓您輕鬆將多媒體廣告整合至您的網站和應用程式。IMA SDK 可以 向任何 與 VAST 相容的廣告伺服器,並管理您應用程式中的廣告播放方式。使用 IMA 用戶端 SDK 您能掌控內容影片播放,而 SDK 會處理廣告播放。廣告在 獨立影片播放器位於應用程式內容影片播放器上方。
本指南說明如何使用以下內容,將 IMA SDK 整合到空白的 Android Studio 專案中: Android VideoView 可用來顯示內容和廣告。如何按照完整範例 請先下載 GitHub 的 BasicExample。
,瞭解如何調查及移除這項存取權。IMA 用戶端總覽
導入 IMA 用戶端需要四個主要的 SDK 元件,如本例所示 指南:
AdDisplayContainer
: 廣告顯示位置的容器物件。AdsLoader
: 這個物件會請求廣告,以及處理廣告請求回應中的事件。除了 將一個廣告載入器執行個體化,以便在應用程式生命週期中重複使用。AdsRequest
: 定義廣告請求的物件。廣告請求會指定 VAST 廣告代碼的網址,以及 額外參數,例如廣告尺寸。AdsManager
: 包含回應廣告請求、控制廣告播放以及監聽廣告的物件 SDK 觸發的事件。
必要條件
1. 建立新的 Android Studio 專案
如要建立 Android Studio 專案,請完成下列步驟:
- 啟動 Android Studio。
- 選取「Start a new Android Studio project」(啟動新的 Android Studio 專案)。
- 在「Choose your project」(選擇專案) 頁面中,選取「Empty Activity」(空白活動) 範本。
- 點選「下一步」。
- 在「Configure your project」頁面中為專案命名,然後選取「Java」做為語言。
- 按一下 [完成]。
2. 將 IMA SDK 加進專案
首先,在應用程式層級的 build.gradle 檔案中,將 IMA SDK 匯入項目新增至
依附元件區段由於 IMA SDK 的大小,因此在這裡導入並啟用 Multidex。這個
適用於 minSdkVersion
設為 20 以下的應用程式。同時新增
compileOptions
:指定 Java 版本相容性資訊。
android { namespace 'com.google.ads.interactivemedia.v3.samples.videoplayerapp' compileSdkVersion 34 compileOptions { sourceCompatibility JavaVersion.VERSION_17 targetCompatibility JavaVersion.VERSION_17 } defaultConfig { applicationId "com.google.ads.interactivemedia.v3.samples.videoplayerapp" minSdkVersion 21 targetSdkVersion 34 multiDexEnabled true versionCode 1 versionName "1.0" } ... } dependencies { implementation 'androidx.appcompat:appcompat:1.6.1' implementation 'androidx.browser:browser:1.6.0' implementation 'androidx.media:media:1.6.0' implementation 'com.google.ads.interactivemedia.v3:interactivemedia:3.34.0' ... }
3. 新增 IMA SDK 必要權限
請新增 IMA SDK 請求廣告所需的使用者權限。
app/src/main/AndroidManifest.xml<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.project name"> <!-- Required permissions for the IMA SDK --> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> ... </manifest>
4. 更新應用程式版面配置
更新應用程式的版面配置,加入 VideoView
可同時播放內容和
廣告。
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MyActivity" tools:ignore="MergeRootFrame"> <RelativeLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="0.4" android:orientation="vertical" android:id="@+id/videoPlayerContainer" > <VideoView android:id="@+id/videoView" android:layout_width="match_parent" android:layout_height="match_parent" /> <ImageButton android:id="@+id/playButton" android:contentDescription="@string/play_description" android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/ic_action_play_over_video" android:background="@null" /> </RelativeLayout> <FrameLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="0.6" android:id="@+id/videoDescription" > <TextView android:id="@+id/playerDescription" android:text="@string/app_name" android:textAlignment="center" android:gravity="center_horizontal" android:layout_width="match_parent" android:layout_height="match_parent" android:textSize="@dimen/font_size" /> </FrameLayout> </LinearLayout>
5. 將 IMA 匯入主要活動
新增 IMA SDK 的匯入陳述式。然後更新
MyActivity
類別,可擴充 AppCompatActivity
。
AppCompatActivity
類別可支援較舊平台上的新版平台功能
Android 裝置。接著,新增一組要用於應用程式的不公開變數。
import android.content.Context; import android.media.AudioManager; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.widget.MediaController; import android.widget.VideoView; import com.google.ads.interactivemedia.v3.api.AdDisplayContainer; import com.google.ads.interactivemedia.v3.api.AdErrorEvent; import com.google.ads.interactivemedia.v3.api.AdEvent; import com.google.ads.interactivemedia.v3.api.AdsLoader; import com.google.ads.interactivemedia.v3.api.AdsManager; import com.google.ads.interactivemedia.v3.api.AdsManagerLoadedEvent; import com.google.ads.interactivemedia.v3.api.AdsRenderingSettings; import com.google.ads.interactivemedia.v3.api.AdsRequest; import com.google.ads.interactivemedia.v3.api.ImaSdkFactory; import com.google.ads.interactivemedia.v3.api.ImaSdkSettings; import com.google.ads.interactivemedia.v3.api.player.VideoProgressUpdate; import java.util.Arrays; ... public class MyActivity extends AppCompatActivity</span> { private static final String LOGTAG = "IMABasicSample"; private static final String SAMPLE_VIDEO_URL = "https://storage.googleapis.com/gvabox/media/samples/stock.mp4"; /** * IMA sample tag for a single skippable inline video ad. See more IMA sample tags at * https://developers.google.com/interactive-media-ads/docs/sdks/html5/client-side/tags */ private static final String SAMPLE_VAST_TAG_URL = "https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/" + "single_preroll_skippable&sz=640x480&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast" + "&unviewed_position_start=1&env=vp&impl=s&correlator="; // Factory class for creating SDK objects. private ImaSdkFactory sdkFactory; // The AdsLoader instance exposes the requestAds method. private AdsLoader adsLoader; // AdsManager exposes methods to control ad playback and listen to ad events. private AdsManager adsManager; // The saved content position, used to resumed content following an ad break. private int savedPosition = 0; // This sample uses a VideoView for content and ad playback. For production // apps, Android's Exoplayer offers a more fully featured player compared to // the VideoView. private VideoView videoPlayer; private MediaController mediaController; private View playButton; private VideoAdPlayerAdapter videoAdPlayerAdapter;</span> }
6. 建立 VideoAdPlayerAdapter 類別
使用 VideoView
建立 VideoAdPlayerAdapter
類別。
並配合 IMA 的
VideoAdPlayer
介面。這個類別會處理內容和廣告播放作業,並包含一組
影片播放器必須實作才能供 IMA SDK 使用。
import android.media.AudioManager; import android.media.MediaPlayer; import android.net.Uri; import android.util.Log; import android.widget.VideoView; import com.google.ads.interactivemedia.v3.api.AdPodInfo; import com.google.ads.interactivemedia.v3.api.player.AdMediaInfo; import com.google.ads.interactivemedia.v3.api.player.VideoAdPlayer; import com.google.ads.interactivemedia.v3.api.player.VideoProgressUpdate; import java.util.ArrayList; import java.util.List; import java.util.Timer; import java.util.TimerTask; /** Example implementation of IMA's VideoAdPlayer interface. */ public class VideoAdPlayerAdapter implements VideoAdPlayer { private static final String LOGTAG = "IMABasicSample"; private static final long POLLING_TIME_MS = 250; private static final long INITIAL_DELAY_MS = 250; private final VideoView videoPlayer; private final AudioManager audioManager; private final List<VideoAdPlayerCallback> videoAdPlayerCallbacks = new ArrayList<>(); private Timer timer; private int adDuration; // The saved ad position, used to resumed ad playback following an ad click-through. private int savedAdPosition; private AdMediaInfo loadedAdMediaInfo; public VideoAdPlayerAdapter(VideoView videoPlayer, AudioManager audioManager) { this.videoPlayer = videoPlayer; this.videoPlayer.setOnCompletionListener( (MediaPlayer mediaPlayer) -> notifyImaOnContentCompleted()); this.audioManager = audioManager; } }
7. 覆寫 VideoAdPlayer 方法
覆寫下列 VideoAdPlayer
方法:
playAd()
方法會設定內容或廣告網址,並設定要啟動的事件監聽器
。
/** Example implementation of IMA's VideoAdPlayer interface. */ public class VideoAdPlayerAdapter implements VideoAdPlayer { ... @Override public void addCallback(VideoAdPlayerCallback videoAdPlayerCallback) { videoAdPlayerCallbacks.add(videoAdPlayerCallback); } @Override public void loadAd(AdMediaInfo adMediaInfo, AdPodInfo adPodInfo) { // This simple ad loading logic works because preloading is disabled. To support // preloading ads your app must maintain state for the currently playing ad // while handling upcoming ad downloading and buffering at the same time. // See the IMA Android preloading guide for more info: // https://developers.google.com/interactive-media-ads/docs/sdks/android/client-side/preload loadedAdMediaInfo = adMediaInfo; } @Override public void pauseAd(AdMediaInfo adMediaInfo) { Log.i(LOGTAG, "pauseAd"); savedAdPosition = videoPlayer.getCurrentPosition(); stopAdTracking(); } @Override public void playAd(AdMediaInfo adMediaInfo) { videoPlayer.setVideoURI(Uri.parse(adMediaInfo.getUrl())); videoPlayer.setOnPreparedListener( mediaPlayer -> { adDuration = mediaPlayer.getDuration(); if (savedAdPosition > 0) { mediaPlayer.seekTo(savedAdPosition); } mediaPlayer.start(); startAdTracking(); }); videoPlayer.setOnErrorListener( (mediaPlayer, errorType, extra) -> notifyImaSdkAboutAdError(errorType)); videoPlayer.setOnCompletionListener( mediaPlayer -> { savedAdPosition = 0; notifyImaSdkAboutAdEnded(); }); } @Override public void release() { // any clean up that needs to be done. } @Override public void removeCallback(VideoAdPlayerCallback videoAdPlayerCallback) { videoAdPlayerCallbacks.remove(videoAdPlayerCallback); } @Override public void stopAd(AdMediaInfo adMediaInfo) { Log.i(LOGTAG, "stopAd"); stopAdTracking(); } /** Returns current volume as a percent of max volume. */ @Override public int getVolume() { return audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) / audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC); }
8. 設定廣告追蹤
您必須先
必須在內容和廣告進度中呼叫 VideoAdPlayerCallback.onAdProgress
。如要提供這項功能,請設定計時器,以固定的時間間隔呼叫 onAdProgress()
。
/** Example implementation of IMA's VideoAdPlayer interface. */ public class VideoAdPlayerAdapter implements VideoAdPlayer { ... private void startAdTracking() { Log.i(LOGTAG, "startAdTracking"); if (timer != null) { return; } timer = new Timer(); TimerTask updateTimerTask = new TimerTask() { @Override public void run() { VideoProgressUpdate progressUpdate = getAdProgress(); notifyImaSdkAboutAdProgress(progressUpdate); } }; timer.schedule(updateTimerTask, POLLING_TIME_MS, INITIAL_DELAY_MS); } private void notifyImaSdkAboutAdEnded() { Log.i(LOGTAG, "notifyImaSdkAboutAdEnded"); savedAdPosition = 0; for (VideoAdPlayer.VideoAdPlayerCallback callback : videoAdPlayerCallbacks) { callback.onEnded(loadedAdMediaInfo); } } private void notifyImaSdkAboutAdProgress(VideoProgressUpdate adProgress) { for (VideoAdPlayer.VideoAdPlayerCallback callback : videoAdPlayerCallbacks) { callback.onAdProgress(loadedAdMediaInfo, adProgress); } } /** * @param errorType Media player's error type as defined at * https://cs.android.com/android/platform/superproject/+/master:frameworks/base/media/java/android/media/MediaPlayer.java;l=4335 * @return True to stop the current ad playback. */ private boolean notifyImaSdkAboutAdError(int errorType) { Log.i(LOGTAG, "notifyImaSdkAboutAdError"); switch (errorType) { case MediaPlayer.MEDIA_ERROR_UNSUPPORTED: Log.e(LOGTAG, "notifyImaSdkAboutAdError: MEDIA_ERROR_UNSUPPORTED"); break; case MediaPlayer.MEDIA_ERROR_TIMED_OUT: Log.e(LOGTAG, "notifyImaSdkAboutAdError: MEDIA_ERROR_TIMED_OUT"); break; default: break; } for (VideoAdPlayer.VideoAdPlayerCallback callback : videoAdPlayerCallbacks) { callback.onError(loadedAdMediaInfo); } return true; } public void notifyImaOnContentCompleted() { Log.i(LOGTAG, "notifyImaOnContentCompleted"); for (VideoAdPlayer.VideoAdPlayerCallback callback : videoAdPlayerCallbacks) { callback.onContentComplete(); } } private void stopAdTracking() { Log.i(LOGTAG, "stopAdTracking"); if (timer != null) { timer.cancel(); timer = null; } } @Override public VideoProgressUpdate getAdProgress() { long adPosition = videoPlayer.getCurrentPosition(); return new VideoProgressUpdate(adPosition, adDuration); } }
9. 在 onCreate
方法中啟動 IMA
覆寫 onCreate
方法,並新增必要的變數指派以啟動
。在這個步驟中,建立以下內容:
ImaSdkSettings
AdsLoader
這個步驟也會建立 VideoAdPlayerAdapter
,這是您稍後建立的類別
部分
最後,設定播放按鈕以請求廣告,然後在點擊時隱藏。
app/src/main/java/com/example/project name/MyActivity.java... public class MyActivity extends AppCompatActivity { ... private VideoView videoPlayer; private MediaController mediaController; private View playButton; private VideoAdPlayerAdapter videoAdPlayerAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_my); // Create the UI for controlling the video view. mediaController = new MediaController(this); videoPlayer = findViewById(R.id.videoView); mediaController.setAnchorView(videoPlayer); videoPlayer.setMediaController(mediaController); // Create an ad display container that uses a ViewGroup to listen to taps. ViewGroup videoPlayerContainer = findViewById(R.id.videoPlayerContainer); AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); videoAdPlayerAdapter = new VideoAdPlayerAdapter(videoPlayer, audioManager); sdkFactory = ImaSdkFactory.getInstance(); AdDisplayContainer adDisplayContainer = ImaSdkFactory.createAdDisplayContainer(videoPlayerContainer, videoAdPlayerAdapter); // Create an AdsLoader. ImaSdkSettings settings = sdkFactory.createImaSdkSettings(); adsLoader = sdkFactory.createAdsLoader(this, settings, adDisplayContainer); // When the play button is clicked, request ads and hide the button. playButton = findViewById(R.id.playButton); playButton.setOnClickListener( view -> { videoPlayer.setVideoPath(SAMPLE_VIDEO_URL); requestAds(SAMPLE_VAST_TAG_URL); view.setVisibility(View.GONE); }); } }
10. 新增 AdsLoader 事件監聽器
新增 addAdErrorListener
和
addAdsLoadedListener
。在 AdsLoadedListener
中建立
AdsManager
,並設定 AdsManager
錯誤事件監聽器。
@Override protected void onCreate(Bundle savedInstanceState) { ... // Create an AdsLoader. ImaSdkSettings settings = sdkFactory.createImaSdkSettings(); adsLoader = sdkFactory.createAdsLoader(this, settings, adDisplayContainer); // Add listeners for when ads are loaded and for errors. adsLoader.addAdErrorListener( new AdErrorEvent.AdErrorListener() { /** An event raised when there is an error loading or playing ads. */ @Override public void onAdError(AdErrorEvent adErrorEvent) { Log.i(LOGTAG, "Ad Error: " + adErrorEvent.getError().getMessage()); resumeContent(); } }); adsLoader.addAdsLoadedListener( new AdsLoader.AdsLoadedListener() { @Override public void onAdsManagerLoaded(AdsManagerLoadedEvent adsManagerLoadedEvent) { // Ads were successfully loaded, so get the AdsManager instance. AdsManager has // events for ad playback and errors. adsManager = adsManagerLoadedEvent.getAdsManager(); // Attach event and error event listeners. adsManager.addAdErrorListener( new AdErrorEvent.AdErrorListener() { /** An event raised when there is an error loading or playing ads. */ @Override public void onAdError(AdErrorEvent adErrorEvent) { Log.e(LOGTAG, "Ad Error: " + adErrorEvent.getError().getMessage()); String universalAdIds = Arrays.toString(adsManager.getCurrentAd().getUniversalAdIds()); Log.i( LOGTAG, "Discarding the current ad break with universal " + "ad Ids: " + universalAdIds); adsManager.discardAdBreak(); } }); } });
11. 處理 IMA 廣告事件
使用以下參數監聽 IMA 廣告事件:
AdsManager.addAdEventListener
。使用切換陳述式,設定下列 IMA 事件的動作:
程式碼片段包含註解,詳細說明如何使用事件。產生
活動設定完成,您可以呼叫
AdsManager.init()
。
adsLoader.addAdsLoadedListener( new AdsLoader.AdsLoadedListener() { @Override public void onAdsManagerLoaded(AdsManagerLoadedEvent adsManagerLoadedEvent) { ... adsManager.addAdEventListener( new AdEvent.AdEventListener() { /** Responds to AdEvents. */ @Override public void onAdEvent(AdEvent adEvent) { if (adEvent.getType() != AdEvent.AdEventType.AD_PROGRESS) { Log.i(LOGTAG, "Event: " + adEvent.getType()); } // These are the suggested event types to handle. For full list of // all ad event types, see AdEvent.AdEventType documentation. switch (adEvent.getType()) { case LOADED: // AdEventType.LOADED is fired when ads are ready to play. // This sample app uses the sample tag // single_preroll_skippable_ad_tag_url that requires calling // AdsManager.start() to start ad playback. // If you use a different ad tag URL that returns a VMAP or // an ad rules playlist, the adsManager.init() function will // trigger ad playback automatically and the IMA SDK will // ignore the adsManager.start(). // It is safe to always call adsManager.start() in the // LOADED event. adsManager.start(); break; case CONTENT_PAUSE_REQUESTED: // AdEventType.CONTENT_PAUSE_REQUESTED is fired when you // should pause your content and start playing an ad. pauseContentForAds(); break; case CONTENT_RESUME_REQUESTED: // AdEventType.CONTENT_RESUME_REQUESTED is fired when the ad // you should play your content. resumeContent(); break; case ALL_ADS_COMPLETED: // Calling adsManager.destroy() triggers the function // VideoAdPlayer.release(). adsManager.destroy(); adsManager = null; break; case CLICKED: // When the user clicks on the Learn More button, the IMA SDK fires // this event, pauses the ad, and opens the ad's click-through URL. // When the user returns to the app, the IMA SDK calls the // VideoAdPlayer.playAd() function automatically. break; default: break; } } }); AdsRenderingSettings adsRenderingSettings = ImaSdkFactory.getInstance().createAdsRenderingSettings(); adsManager.init(adsRenderingSettings); }
12. 處理廣告和內容之間的切換
在本節中,建立 pauseContentForAds
和 resumeContent
方法。這些方法會重複使用播放器進行遊戲
內容與廣告您必須追蹤內容位置,
廣告出現後繼續播放。
/** Main activity. */ public class MyActivity extends AppCompatActivity { ... private void pauseContentForAds() { Log.i(LOGTAG, "pauseContentForAds"); savedPosition = videoPlayer.getCurrentPosition(); videoPlayer.stopPlayback(); // Hide the buttons and seek bar controlling the video view. videoPlayer.setMediaController(null); } private void resumeContent() { Log.i(LOGTAG, "resumeContent"); // Show the buttons and seek bar controlling the video view. videoPlayer.setVideoPath(SAMPLE_VIDEO_URL); videoPlayer.setMediaController(mediaController); videoPlayer.setOnPreparedListener( mediaPlayer -> { if (savedPosition > 0) { mediaPlayer.seekTo(savedPosition); } mediaPlayer.start(); }); videoPlayer.setOnCompletionListener( mediaPlayer -> videoAdPlayerAdapter.notifyImaOnContentCompleted()); } }
13. 請求廣告
現在,新增 requestAds
方法建構
AdsRequest
並使用該指令碼呼叫 AdsLoader.requestAds()
。
/** Main activity. */ public class MyActivity extends AppCompatActivity { ... private void requestAds(String adTagUrl) { // Create the ads request. AdsRequest request = sdkFactory.createAdsRequest(); request.setAdTagUrl(adTagUrl); request.setContentProgressProvider( () -> { if (videoPlayer.getDuration() <= 0) { return VideoProgressUpdate.VIDEO_TIME_NOT_READY; } return new VideoProgressUpdate( videoPlayer.getCurrentPosition(), videoPlayer.getDuration()); }); // Request the ad. After the ad is loaded, onAdsManagerLoaded() will be called. adsLoader.requestAds(request); } }
大功告成!現在,您透過 IMA SDK 請求及顯示廣告。如要瞭解其他 SDK 功能,請參閱其他指南 GitHub 上的範例。