Add a setter for ad error listeners

This is useful because ImaAdsLoader.getAdsLoader() can now return null
(before ads have been requested), and it avoids the app needing to get
an AdsManager to attach its listener.

PiperOrigin-RevId: 330907051

extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java

@@ -124,6 +124,7 @@ public final class ImaAdsLoader
     private final Context context;
 
     @Nullable private ImaSdkSettings imaSdkSettings;
+    @Nullable private AdErrorListener adErrorListener;
     @Nullable private AdEventListener adEventListener;
     @Nullable private Set<UiElement> adUiElements;
     @Nullable private Collection<CompanionAdSlot> companionAdSlots;
@@ -165,6 +166,19 @@ public final class ImaAdsLoader
       return this;
     }
 
+    /**
+     * Sets a listener for ad errors that will be passed to {@link
+     * AdsLoader#addAdErrorListener(AdErrorListener)} and {@link
+     * AdsManager#addAdErrorListener(AdErrorListener)}.
+     *
+     * @param adErrorListener The ad error listener.
+     * @return This builder, for convenience.
+     */
+    public Builder setAdErrorListener(AdErrorListener adErrorListener) {
+      this.adErrorListener = checkNotNull(adErrorListener);
+      return this;
+    }
+
     /**
      * Sets a listener for ad events that will be passed to {@link
      * AdsManager#addAdEventListener(AdEventListener)}.
@@ -316,6 +330,7 @@ public final class ImaAdsLoader
           playAdBeforeStartPosition,
           adUiElements,
           companionAdSlots,
+          adErrorListener,
           adEventListener,
           imaFactory);
     }
@@ -341,6 +356,7 @@ public final class ImaAdsLoader
           playAdBeforeStartPosition,
           adUiElements,
           companionAdSlots,
+          adErrorListener,
           adEventListener,
           imaFactory);
     }
@@ -408,6 +424,7 @@ public final class ImaAdsLoader
   private final int mediaBitrate;
   @Nullable private final Set<UiElement> adUiElements;
   @Nullable private final Collection<CompanionAdSlot> companionAdSlots;
+  @Nullable private final AdErrorListener adErrorListener;
   @Nullable private final AdEventListener adEventListener;
   private final ImaFactory imaFactory;
   private final ImaSdkSettings imaSdkSettings;
@@ -516,6 +533,7 @@ public final class ImaAdsLoader
         /* playAdBeforeStartPosition= */ true,
         /* adUiElements= */ null,
         /* companionAdSlots= */ null,
+        /* adErrorListener= */ null,
         /* adEventListener= */ null,
         /* imaFactory= */ new DefaultImaFactory());
   }
@@ -534,6 +552,7 @@ public final class ImaAdsLoader
       boolean playAdBeforeStartPosition,
       @Nullable Set<UiElement> adUiElements,
       @Nullable Collection<CompanionAdSlot> companionAdSlots,
+      @Nullable AdErrorListener adErrorListener,
       @Nullable AdEventListener adEventListener,
       ImaFactory imaFactory) {
     checkArgument(adTagUri != null || adsResponse != null);
@@ -548,6 +567,7 @@ public final class ImaAdsLoader
     this.playAdBeforeStartPosition = playAdBeforeStartPosition;
     this.adUiElements = adUiElements;
     this.companionAdSlots = companionAdSlots;
+    this.adErrorListener = adErrorListener;
     this.adEventListener = adEventListener;
     this.imaFactory = imaFactory;
     if (imaSdkSettings == null) {
@@ -629,6 +649,9 @@ public final class ImaAdsLoader
     }
     adsLoader = imaFactory.createAdsLoader(context, imaSdkSettings, adDisplayContainer);
     adsLoader.addAdErrorListener(componentListener);
+    if (adErrorListener != null) {
+      adsLoader.addAdErrorListener(adErrorListener);
+    }
     adsLoader.addAdsLoadedListener(componentListener);
     AdsRequest request = imaFactory.createAdsRequest();
     if (adTagUri != null) {
@@ -759,6 +782,9 @@ public final class ImaAdsLoader
     if (adsLoader != null) {
       adsLoader.removeAdsLoadedListener(componentListener);
       adsLoader.removeAdErrorListener(componentListener);
+      if (adErrorListener != null) {
+        adsLoader.removeAdErrorListener(adErrorListener);
+      }
     }
     imaPausedContent = false;
     imaAdState = IMA_AD_STATE_NONE;
@@ -1582,6 +1608,9 @@ public final class ImaAdsLoader
   private void destroyAdsManager() {
     if (adsManager != null) {
       adsManager.removeAdErrorListener(componentListener);
+      if (adErrorListener != null) {
+        adsManager.removeAdErrorListener(adErrorListener);
+      }
       adsManager.removeAdEventListener(componentListener);
       if (adEventListener != null) {
         adsManager.removeAdEventListener(adEventListener);
@@ -1642,6 +1671,9 @@ public final class ImaAdsLoader
       pendingAdRequestContext = null;
       ImaAdsLoader.this.adsManager = adsManager;
       adsManager.addAdErrorListener(this);
+      if (adErrorListener != null) {
+        adsManager.addAdErrorListener(adErrorListener);
+      }
       adsManager.addAdEventListener(this);
       if (adEventListener != null) {
         adsManager.addAdEventListener(adEventListener);