Fixed SystemServiceRegistry to return a null AppPredictionManager when the service is not defined.

am: 87c5855e17

Change-Id: I207ddf77599d9a12609c7b297a58c8ce1b6eab17

2 files changed, 5 insertions, 1 deletions

diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index cfe2cf09ae19..d29cf80bd74e 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -1162,7 +1162,8 @@ final class SystemServiceRegistry {
             @Override
             public AppPredictionManager createService(ContextImpl ctx)
                     throws ServiceNotFoundException {
-                return new AppPredictionManager(ctx);
+                IBinder b = ServiceManager.getService(Context.APP_PREDICTION_SERVICE);
+                return b == null ? null : new AppPredictionManager(ctx);
             }
         });
 
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 73bc908632b2..0bac6835496b 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -4109,6 +4109,9 @@ public abstract class Context {
     /**
      * Official published name of the app prediction service.
      *
+     * <p><b>NOTE: </b> this service is optional; callers of
+     * {@code Context.getSystemServiceName(APP_PREDICTION_SERVICE)} should check for {@code null}.
+     *
      * @hide
      * @see #getSystemService(String)
      */