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Move MediaMetricsListener creation to static constructor method.

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This allows to check if the media metrics service is available outside
the actual constructor and to fail gracefully if it is missing.

PiperOrigin-RevId: 412232425
This commit is contained in:
tonihei 2021-11-25 10:01:47 +00:00 committed by kim-vde
parent 94ef005b17
commit be0b2b8c8c
1 changed files with 19 additions and 6 deletions
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25
library/core/src/main/java/com/google/android/exoplayer2/analytics/MediaMetricsListener.java
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@ -16,7 +16,6 @@
package com.google.android.exoplayer2.analytics;
import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull;
import static com.google.android.exoplayer2.util.Util.castNonNull;
import android.annotation.SuppressLint;
@ -90,6 +89,23 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
public final class MediaMetricsListener
implements AnalyticsListener, PlaybackSessionManager.Listener {
/**
* Creates a media metrics listener.
*
* @param context A context.
* @return The {@link MediaMetricsListener}, or null if the {@link Context#MEDIA_METRICS_SERVICE
* media metrics service} isn't available.
*/
@Nullable
public static MediaMetricsListener create(Context context) {
@Nullable
MediaMetricsManager mediaMetricsManager =
(MediaMetricsManager) context.getSystemService(Context.MEDIA_METRICS_SERVICE);
return mediaMetricsManager == null
? null
: new MediaMetricsListener(context, mediaMetricsManager.createPlaybackSession());
}
private final Context context;
private final PlaybackSessionManager sessionManager;
private final PlaybackSession playbackSession;
@ -122,15 +138,12 @@ public final class MediaMetricsListener
*
* @param context A {@link Context}.
*/
public MediaMetricsListener(Context context) {
private MediaMetricsListener(Context context, PlaybackSession playbackSession) {
context = context.getApplicationContext();
this.context = context;
this.playbackSession = playbackSession;
window = new Timeline.Window();
period = new Timeline.Period();
MediaMetricsManager mediaMetricsManager =
checkStateNotNull(
(MediaMetricsManager) context.getSystemService(Context.MEDIA_METRICS_SERVICE));
playbackSession = mediaMetricsManager.createPlaybackSession();
startTimeMs = SystemClock.elapsedRealtime();
currentPlaybackState = PlaybackStateEvent.STATE_NOT_STARTED;
currentNetworkType = NetworkEvent.NETWORK_TYPE_UNKNOWN;