From 623122cd98594e295b91f5d7b883f8b5126bd4b8 Mon Sep 17 00:00:00 2001
From: Christofer Åkersten <akersten@google.com>
Date: Tue, 13 Mar 2018 13:30:06 +0900
Subject: Ensure members are non-null in callback

Bug: 74570008
Test: runtest-cts-MediaComponents -r 100
Change-Id: I59590afae4e67fa8a90f8a7b4a6be58ce54e2806
---
 .../java/android/media/session/MediaSessionManager.java | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/media/java/android/media/session/MediaSessionManager.java b/media/java/android/media/session/MediaSessionManager.java
index 6b130cc1c402..051321c84d9a 100644
--- a/media/java/android/media/session/MediaSessionManager.java
+++ b/media/java/android/media/session/MediaSessionManager.java
@@ -775,8 +775,7 @@ public final class MediaSessionManager {
                         public void run() {
                             final Context context = mContext;
                             if (context != null) {
-                                ArrayList<MediaController> controllers
-                                        = new ArrayList<MediaController>();
+                                ArrayList<MediaController> controllers = new ArrayList<>();
                                 int size = tokens.size();
                                 for (int i = 0; i < size; i++) {
                                     controllers.add(new MediaController(context, tokens.get(i)));
@@ -814,10 +813,16 @@ public final class MediaSessionManager {
         private final ISessionTokensListener.Stub mStub = new ISessionTokensListener.Stub() {
             @Override
             public void onSessionTokensChanged(final List<Bundle> bundles) {
-                mExecutor.execute(() -> {
-                    List<SessionToken2> tokens = toTokenList(mContext, bundles);
-                    mListener.onSessionTokensChanged(tokens);
-                });
+                final Executor executor = mExecutor;
+                if (executor != null) {
+                    executor.execute(() -> {
+                        final Context context = mContext;
+                        final OnSessionTokensChangedListener listener = mListener;
+                        if (context != null && listener != null) {
+                            listener.onSessionTokensChanged(toTokenList(context, bundles));
+                        }
+                    });
+                }
             }
         };
 
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