diff --git a/media/java/android/media/metrics/NetworkEvent.java b/media/java/android/media/metrics/NetworkEvent.java
index 098885c..18660682 100644
--- a/media/java/android/media/metrics/NetworkEvent.java
+++ b/media/java/android/media/metrics/NetworkEvent.java
@@ -113,10 +113,11 @@
      *
      * @hide
      */
-    public NetworkEvent(@NetworkType int type, long timeSinceCreatedMillis, Bundle extras) {
+    public NetworkEvent(@NetworkType int type, long timeSinceCreatedMillis,
+            @Nullable Bundle extras) {
         this.mNetworkType = type;
         this.mTimeSinceCreatedMillis = timeSinceCreatedMillis;
-        this.mExtras = extras.deepCopy();
+        this.mExtras = extras == null ? null : extras.deepCopy();
     }
 
     /**
diff --git a/media/java/android/media/metrics/PlaybackErrorEvent.java b/media/java/android/media/metrics/PlaybackErrorEvent.java
index b23b4d2..ccf848b 100644
--- a/media/java/android/media/metrics/PlaybackErrorEvent.java
+++ b/media/java/android/media/metrics/PlaybackErrorEvent.java
@@ -65,12 +65,12 @@
             int errorCode,
             int subErrorCode,
             long timeSinceCreatedMillis,
-            Bundle extras) {
+            @Nullable Bundle extras) {
         this.mExceptionStack = exceptionStack;
         this.mErrorCode = errorCode;
         this.mSubErrorCode = subErrorCode;
         this.mTimeSinceCreatedMillis = timeSinceCreatedMillis;
-        this.mExtras = extras.deepCopy();
+        this.mExtras = extras == null ? null : extras.deepCopy();
     }
 
     /** @hide */
diff --git a/media/java/android/media/metrics/PlaybackMetrics.java b/media/java/android/media/metrics/PlaybackMetrics.java
index 7e7f44a..3ffd10f 100644
--- a/media/java/android/media/metrics/PlaybackMetrics.java
+++ b/media/java/android/media/metrics/PlaybackMetrics.java
@@ -194,7 +194,7 @@
             long localBytesRead,
             long networkTransferDurationMillis,
             byte[] drmSessionId,
-            Bundle extras) {
+            @Nullable Bundle extras) {
         this.mMediaDurationMillis = mediaDurationMillis;
         this.mStreamSource = streamSource;
         this.mStreamType = streamType;
@@ -212,7 +212,7 @@
         this.mLocalBytesRead = localBytesRead;
         this.mNetworkTransferDurationMillis = networkTransferDurationMillis;
         this.mDrmSessionId = drmSessionId;
-        this.mExtras = extras.deepCopy();
+        this.mExtras = extras == null ? null : extras.deepCopy();
     }
 
     /**
diff --git a/media/java/android/media/metrics/PlaybackStateEvent.java b/media/java/android/media/metrics/PlaybackStateEvent.java
index dea8c1d..2bab5c9 100644
--- a/media/java/android/media/metrics/PlaybackStateEvent.java
+++ b/media/java/android/media/metrics/PlaybackStateEvent.java
@@ -138,10 +138,10 @@
     public PlaybackStateEvent(
             int state,
             long timeSinceCreatedMillis,
-            Bundle extras) {
+            @Nullable Bundle extras) {
         this.mTimeSinceCreatedMillis = timeSinceCreatedMillis;
         this.mState = state;
-        this.mExtras = extras.deepCopy();
+        this.mExtras = extras == null ? null : extras.deepCopy();
     }
 
     /**
diff --git a/media/java/android/media/metrics/TrackChangeEvent.java b/media/java/android/media/metrics/TrackChangeEvent.java
index aa51978..a3eb4ad 100644
--- a/media/java/android/media/metrics/TrackChangeEvent.java
+++ b/media/java/android/media/metrics/TrackChangeEvent.java
@@ -167,7 +167,7 @@
         this.mWidth = width;
         this.mHeight = height;
         this.mVideoFrameRate = videoFrameRate;
-        this.mExtras = extras.deepCopy();
+        this.mExtras = extras == null ? null : extras.deepCopy();
     }
 
     /**