ml" title="class in com.google.android.exoplayer2.analytics"><code>MediaMetricsListener</code></a>, or null if the <a href="https://developer.android.com/reference/android/content/Context.html#MEDIA_METRICS_SERVICE" title="class or interface in android.content" class="externalLink" target="_top"><code>media metrics service</code></a> isn't available.</dd>
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<h4>getLogSessionId</h4>
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