diff --git a/media/java/android/media/tv/TvInputManager.java b/media/java/android/media/tv/TvInputManager.java
index d2deb66..b7a230c 100644
--- a/media/java/android/media/tv/TvInputManager.java
+++ b/media/java/android/media/tv/TvInputManager.java
@@ -709,7 +709,9 @@
             }
         };
         try {
-            mService.registerCallback(mManagerCallback, mUserId);
+            if (mService != null) {
+                mService.registerCallback(mManagerCallback, mUserId);
+            }
         } catch (RemoteException e) {
             Log.e(TAG, "mService.registerCallback failed: " + e);
         }
diff --git a/media/java/android/media/tv/TvView.java b/media/java/android/media/tv/TvView.java
index 4171e6d..213e34c 100644
--- a/media/java/android/media/tv/TvView.java
+++ b/media/java/android/media/tv/TvView.java
@@ -312,7 +312,9 @@
             // is newly assigned for every createSession request and compared with
             // MySessionCreateCallback.this.
             mSessionCallback = new MySessionCallback(inputId, channelUri, params);
-            mTvInputManager.createSession(inputId, mSessionCallback, mHandler);
+            if (mTvInputManager != null) {
+                mTvInputManager.createSession(inputId, mSessionCallback, mHandler);
+            }
         }
     }