fix: Lint issues

Author: avinash-newrelic

NRExoPlayerTracker/src/main/java/com/newrelic/videoagent/exoplayer/tracker/NRTrackerExoPlayer.java

@@ -5,6 +5,8 @@
 import android.os.Looper;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
+import androidx.media3.common.util.UnstableApi;
 import androidx.media3.common.C;
 import androidx.media3.common.MediaLibraryInfo;
 import androidx.media3.common.MediaMetadata;
@@ -37,7 +39,12 @@
 
 /**
  * New Relic Video tracker for ExoPlayer.
+ * <p>
+ * @OptIn is required for Media3 APIs which are marked as @UnstableApi.
+ * This is by design as per Google's Media3 documentation.
+ * @see <a href="https://developer.android.com/media/media3/exoplayer/customization#unstable-api">Media3 Unstable API Documentation</a>
  */
+@OptIn(markerClass = UnstableApi.class)
 public class NRTrackerExoPlayer extends NRVideoTracker implements Player.Listener, AnalyticsListener {
 
     protected ExoPlayer player;

app/src/main/java/com/newrelic/nrvideoproject/VideoPlayerAds.java

@@ -8,21 +8,28 @@
 import com.newrelic.videoagent.core.NRVideoPlayerConfiguration;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.media3.common.MediaItem;
-import androidx.media3.common.util.Util;
 import androidx.media3.datasource.DataSource;
-import androidx.media3.datasource.DefaultDataSourceFactory;
-import androidx.media3.exoplayer.SimpleExoPlayer;
+import androidx.media3.datasource.DefaultDataSource;
+import androidx.media3.exoplayer.ExoPlayer;
 import androidx.media3.exoplayer.ima.ImaAdsLoader;
 import androidx.media3.exoplayer.source.DefaultMediaSourceFactory;
 import androidx.media3.ui.PlayerView;
+import androidx.annotation.OptIn;
+import androidx.media3.common.util.UnstableApi;
 
 import android.util.Log;
 import com.newrelic.videoagent.core.NewRelicVideoAgent;
 import com.newrelic.videoagent.ima.tracker.NRTrackerIMA;
 
+/**
+ * @OptIn is required for Media3 IMA ads integration APIs which are marked as @UnstableApi.
+ * This is by design as per Google's Media3 documentation.
+ * @see <a href="https://developer.android.com/media/media3/exoplayer/customization#unstable-api">Media3 Unstable API Documentation</a>
+ */
+@OptIn(markerClass = UnstableApi.class)
 public class VideoPlayerAds extends AppCompatActivity implements AdErrorEvent.AdErrorListener, AdEvent.AdEventListener {
 
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
     private Integer trackerId;
     private ImaAdsLoader adsLoader;
     private PlayerView playerView;
@@ -67,13 +74,12 @@ protected void onDestroy() {
 
     private void playVideo(String videoUrl) {
         // Set up the factory for media sources, passing the ads loader and ad view providers.
-        DataSource.Factory dataSourceFactory =
-                new DefaultDataSourceFactory(this, Util.getUserAgent(this, getString(R.string.app_name)));
+        DataSource.Factory dataSourceFactory = new DefaultDataSource.Factory(this);
         DefaultMediaSourceFactory mediaSourceFactory = new DefaultMediaSourceFactory(dataSourceFactory);
         mediaSourceFactory.setAdsLoaderProvider(unusedAdTagUri -> adsLoader);
         mediaSourceFactory.setAdViewProvider(playerView);
 
-        player = new SimpleExoPlayer.Builder(this).setMediaSourceFactory(mediaSourceFactory).build();
+        player = new ExoPlayer.Builder(this).setMediaSourceFactory(mediaSourceFactory).build();
         NRVideoPlayerConfiguration playerConfiguration = new NRVideoPlayerConfiguration("test-player-something-else", player, true, null);
         trackerId = NRVideo.addPlayer(playerConfiguration);
         adTracker = (NRTrackerIMA) NewRelicVideoAgent.getInstance().getAdTracker(trackerId);
@@ -93,7 +99,7 @@ private void playVideo(String videoUrl) {
         Uri contentUri = Uri.parse(videoUrl);
         Uri adTagUri = Uri.parse(getString(R.string.ad_tag_url));
         MediaItem mediaItem = new MediaItem.Builder().setUri(contentUri).setAdTagUri(adTagUri).build();
-        // Prepare the content and ad to be played with the SimpleExoPlayer.
+        // Prepare the content and ad to be played with the ExoPlayer.
         player.setMediaItem(mediaItem);
         // Set PlayWhenReady. If true, content and ads will autoplay.
         player.setPlayWhenReady(true);